1. The document discusses how human evolution was shaped by living as hunter-gatherers for millions of years in a variable environment with scarce resources. This led to metabolic adaptations like the ability to store fat and be efficient endurance hunters.
2. It describes how human physiology, like sweat glands and upright walking, helped early humans regulate body temperature and cover long ranges to find food. Modern lifestyles with abundant food and low activity levels disrupt these evolutionary adaptations.
3. The metabolic diseases seen in Western cultures today, like obesity and diabetes, are largely due to evolutionary mismatches between our genes and current environment with cheap, abundant calories and physical inactivity. Our bodies were designed for an active lifestyle with variable
This document discusses nutritional considerations for people living with HIV/AIDS. It notes that while antiretroviral therapy can control the destruction of lean body tissue caused by HIV, some patients may experience fat accumulation, increased lipids, and insulin resistance after starting treatment. The document suggests following a diet high in fiber, proteins, and fats can help minimize metabolic disorders. It emphasizes choosing carbohydrates from whole, fiber-rich sources and combining carbohydrates with proteins, fiber and fats at meals to help control blood sugar and insulin levels. Maintaining the proper balance and sources of fats, proteins and carbohydrates is important for health, immune function and body composition for those living with HIV/AIDS.
'Lo último en obesidad'. Este es el título del Simposio Internacional que organizamos en la Fundación Ramón Areces los días 1 y 2 de diciembre de 2015. En colaboración con la Fundación General CSIC, reunió a algunos de los mayores expertos en la materia para analizar cómo reducir este grave problema de salud pública.
For over 25 years, ALCAT has been the pioneer in developing kits used for testing of gluten allergy. A gluten allergy kit from ALCAT is capable of determining the extent of allergy that a patient has to the 350 plus chemicals that cause gluten sensitivity.
A talk I gave on fasting at Phage Camp, Burning Man 2018.
Whether through intermittent fasting or time restricted eating, hundreds of books have been written on how to use fasting to lose weight.
However, rewinding back through thousands of years we see that fasting is a part of almost every major religion and recommended by some of the greatest ancient thinkers. Are we missing the point by just seeing it as another diet? In my presentation, I’ll go through a brief history of fasting and its uses throughout time, before looking at the most recent science which suggests it’s one of the most potent tools we have to stave off modern diseases such as cancer, Alzheimer's and multiple sclerosis and delay the premature aging of our bodies.
Brinks unified theory_of_nutrition_for_weight_loss_and_muscle_gainChef Central
Brink's unified theory of nutrition seeks to reconcile opposing views on the roles of calories and macronutrients in weight loss. It states that total calorie intake determines how much weight is lost or gained, while the ratios of carbohydrates, fats and proteins determine what is lost or gained (fat, muscle, etc.). Studies show diets with identical calories but varying macronutrient ratios can affect metabolism, appetite and body composition differently. The theory combines the view that calories matter for total weight changes, with evidence that macronutrient ratios influence the composition of weight lost or gained.
This document discusses various topics related to food energy and metabolism. It defines food and food energy, and explains that food provides nutrients that animals use through cellular respiration to produce energy. It then discusses several units and concepts used to measure food energy and metabolism, including calories, respiratory quotient, specific dynamic action, net protein utilization, basal metabolic rate, and body mass index.
Evolutionary theory suggests that humans have evolved certain food preferences that increased chances of survival. These include:
1) A preference for sweet foods which would encourage consumption of ripe fruit high in calories. There is evidence that humans have more taste receptors for sweetness compared to other tastes.
2) A preference for salty foods which are important for bodily functions but were scarce resources historically. While not innate, children develop a preference for salty foods.
3) Avoidance of unfamiliar or "dangerous" foods to reduce risk of food poisoning. Cooking meat kills bacteria while taste aversion and food neophobia protect against toxins that could make one sick. These behaviors were adaptive for avoiding foods harmful to survival and
SELRC 2015 Talk: Role of muscle mTORC1 in obesity and metabolismDave Bridges
Seminar at the 2015 Southeast Lipid Research Conference in Stone Mountain, Georgia. This talk covers my lab's data on the role of muscle mTORC1 in regulating energy expenditure, insulin sensitivity and glycogen metabolism
This document discusses nutritional considerations for people living with HIV/AIDS. It notes that while antiretroviral therapy can control the destruction of lean body tissue caused by HIV, some patients may experience fat accumulation, increased lipids, and insulin resistance after starting treatment. The document suggests following a diet high in fiber, proteins, and fats can help minimize metabolic disorders. It emphasizes choosing carbohydrates from whole, fiber-rich sources and combining carbohydrates with proteins, fiber and fats at meals to help control blood sugar and insulin levels. Maintaining the proper balance and sources of fats, proteins and carbohydrates is important for health, immune function and body composition for those living with HIV/AIDS.
'Lo último en obesidad'. Este es el título del Simposio Internacional que organizamos en la Fundación Ramón Areces los días 1 y 2 de diciembre de 2015. En colaboración con la Fundación General CSIC, reunió a algunos de los mayores expertos en la materia para analizar cómo reducir este grave problema de salud pública.
For over 25 years, ALCAT has been the pioneer in developing kits used for testing of gluten allergy. A gluten allergy kit from ALCAT is capable of determining the extent of allergy that a patient has to the 350 plus chemicals that cause gluten sensitivity.
A talk I gave on fasting at Phage Camp, Burning Man 2018.
Whether through intermittent fasting or time restricted eating, hundreds of books have been written on how to use fasting to lose weight.
However, rewinding back through thousands of years we see that fasting is a part of almost every major religion and recommended by some of the greatest ancient thinkers. Are we missing the point by just seeing it as another diet? In my presentation, I’ll go through a brief history of fasting and its uses throughout time, before looking at the most recent science which suggests it’s one of the most potent tools we have to stave off modern diseases such as cancer, Alzheimer's and multiple sclerosis and delay the premature aging of our bodies.
Brinks unified theory_of_nutrition_for_weight_loss_and_muscle_gainChef Central
Brink's unified theory of nutrition seeks to reconcile opposing views on the roles of calories and macronutrients in weight loss. It states that total calorie intake determines how much weight is lost or gained, while the ratios of carbohydrates, fats and proteins determine what is lost or gained (fat, muscle, etc.). Studies show diets with identical calories but varying macronutrient ratios can affect metabolism, appetite and body composition differently. The theory combines the view that calories matter for total weight changes, with evidence that macronutrient ratios influence the composition of weight lost or gained.
This document discusses various topics related to food energy and metabolism. It defines food and food energy, and explains that food provides nutrients that animals use through cellular respiration to produce energy. It then discusses several units and concepts used to measure food energy and metabolism, including calories, respiratory quotient, specific dynamic action, net protein utilization, basal metabolic rate, and body mass index.
Evolutionary theory suggests that humans have evolved certain food preferences that increased chances of survival. These include:
1) A preference for sweet foods which would encourage consumption of ripe fruit high in calories. There is evidence that humans have more taste receptors for sweetness compared to other tastes.
2) A preference for salty foods which are important for bodily functions but were scarce resources historically. While not innate, children develop a preference for salty foods.
3) Avoidance of unfamiliar or "dangerous" foods to reduce risk of food poisoning. Cooking meat kills bacteria while taste aversion and food neophobia protect against toxins that could make one sick. These behaviors were adaptive for avoiding foods harmful to survival and
SELRC 2015 Talk: Role of muscle mTORC1 in obesity and metabolismDave Bridges
Seminar at the 2015 Southeast Lipid Research Conference in Stone Mountain, Georgia. This talk covers my lab's data on the role of muscle mTORC1 in regulating energy expenditure, insulin sensitivity and glycogen metabolism
This document discusses body fat storage and metabolism. It explains that fat cells primarily store lipids for energy but also produce hormones. It then covers various fat storage locations and types of fat tissue. The rest of the document discusses hormones involved in fat regulation like insulin, leptin and cortisol. It provides examples of calorie intake calculations and guidelines for macronutrient distribution in the diet for fat loss.
Evolutionary theory suggests that humans have evolved certain food preferences that increased their chances of survival. These include a preference for sweet foods, which signified ripe, high-calorie fruits, fatty foods which provided more energy, and salty foods which contained essential nutrients. Research provides some support for these preferences, showing innate preferences in infants and universal adoption of sweet foods across cultures. However, evolutionary explanations are difficult to test directly and rely on observations and fossil evidence.
This document provides an overview of Dr. Armen Mehrabyan's theory of "conscious food" or "meaningful eating". Some key points:
- Ancient Armenian culture was an epicenter of cultural exchange in classical antiquity, and some of its ancient culinary traditions survive in modern Armenian cuisine.
- Dr. Mehrabyan proposes four main principles of "conscious food": that food is valued by its viability not calories; nutrients are natural gifts not scientific metrics; humans are sustained by spirit not food; and health relies on food vitality not chemical composition.
- He discusses the digestion process and how carbohydrates, fats, proteins and salts are broken down and absorbed to sustain the body
This document describes a study that examined the impact of different crude protein levels in the diet on the growth of lambs. Fifteen male lambs were divided into three groups and fed diets with low (100g/kg), medium (130g/kg), or high (160g/kg) crude protein levels. During the first 6 weeks, lambs on the low and medium protein diets gained less weight than those on the high protein diet. For the rest of the trial period, lambs on the medium protein diet had the highest growth rate. Digestibility was similar for the medium and high protein diets and higher than the low protein diet. Results suggest that the optimum crude protein level for growing lambs is
The document discusses theories of hunger, eating behaviors, and body weight regulation. It describes several factors that influence eating behaviors, including physiological hunger and satiety signals, learned food preferences, social and environmental cues. The dominant theories of a body weight "set point" are challenged, as factors like eating disorders, diet trends, and modern food environments contradict evolutionary models. New perspectives emphasize positive incentives for eating driven by food pleasure rather than just energy needs.
The document discusses how fat tissue is essential but obesity has become a worldwide epidemic. It describes several factors that have contributed to increased obesity rates, including changes to the human diet with the introduction of cereal grains, refined sugars and oils through agriculture, a more sedentary lifestyle, and genetic factors. The rise in obesity is linked to various metabolic diseases like type 2 diabetes, dyslipidemia, and insulin resistance.
The human body requires energy to perform basic functions and physical activities. The amount of energy expended varies depending on the intensity of the activity, from basic metabolic functions to vigorous exercise. Regular physical activity increases daily energy expenditure and can help maintain a healthy energy balance and weight. Lack of activity reduces energy expenditure and contributes to weight gain if not balanced with calorie intake. The lesson explores factors that influence energy expenditure and the relationship between physical activity, calorie balance, and health.
This document discusses macronutrients and their effects on obesity. It defines macronutrients as nutrients required in large amounts to provide energy, including carbohydrates, proteins and fats. Obesity is defined as excess body fat using body mass index. The document explores how different macronutrients like dietary fat, carbohydrates, fiber and protein can impact energy balance and risk of obesity, with high fat diets and refined carbohydrates linked to greater weight gain. Fiber is found to promote satiety and protect against obesity. The conclusion states that a low energy density diet low in fat can reduce calorie intake and obesity prevalence.
Human resources section6-textbook_on_public_health_and_community_medicinePrabir Chatterjee
This document appears to be the introduction to a chapter on nutrition in public health. It provides background on the history and evolution of nutrition as a science, defines key nutrition terms, and outlines some of the major categories of foods and nutrients. It also discusses the interplay between malnutrition and infection and notes that nutritional requirements can vary between individuals depending on factors like genetics, life stage, health status, and lifestyle.
The document discusses various topics related to nutrition including food classification, balanced diet, calorie and protein requirements, energy metabolism, basal metabolic rate, respiratory quotient, specific dynamic action, glycemic index, dietary fibers, lipids, and protein quality assessment. It provides definitions, formulas, guidelines and examples for each topic in a detailed manner.
Get Lean, Stay Lean by Dr Joanna McMillan www.weightlossinstitute.com.auSonja Bella
2013 Australian & New Zealand Weight Loss Leaders Summit (Sydney)
Dr Joanna McMillian is one of Australia’s best-known nutrition and healthy lifestyle experts, and is an author of several books including the award winning Inner Health Outer Beauty and the internationally published The Low GI Diet.
In her insightful presentation Dr Joanna will reveal:
The controversies in weight loss diets, the facts and the myths.
Food is more than the nutrients it contains – this information is a MUST for educating your clients.
A template for healthy eating, what does the doctor recommend?
Helping your clients take control of their own diet and lifestyle.
This document discusses the causes of leaky gut syndrome. It identifies four main causes: poor diet, chronic stress, toxin overload, and bacterial imbalance. Poor diet can cause leaky gut through nutritional deficiencies, fatty acid deficiencies, improper digestion, and a high intake of commonly aggravating foods like gluten, dairy, pulses, and spicy foods. Chronic inflammation, stress, parasites, pathogenic bacteria, and yeast infections can also damage the gut lining and cause increased permeability.
Stuart Phillips - ASN (Boston, 2018) Mind the GapStuart Phillips
This document discusses the importance of protein intake for aging individuals. It notes that longer lifespans have increased the prevalence of age-related declines in muscle mass and strength. Maintaining muscle through resistance exercise and adequate protein intake can help mitigate these effects. The document reviews studies showing that older adults may need more than the current recommended daily allowance of protein to optimize muscle protein synthesis and muscle mass. It advocates for an "optimal" protein intake of 1.2-1.5 grams of protein per kilogram of body weight per day distributed across meals to support muscle health in aging.
Nutrition is the process by which an organism consumes food and utilizes it in the body. It involves the intake of food and the utilization of its components like carbohydrates, proteins, fats, vitamins, and minerals by the body. Good nutrition is essential for proper growth and development as well as overall health and well-being of the body.
This document provides an overview of energy balance and weight control. It discusses factors that influence basal metabolism and physical activity, and how they impact energy needs and expenditure. The document estimates calorie needs and defines healthy versus unhealthy body weights using BMI. It also examines causes of obesity and strategies for successful weight loss and maintenance through calorie control, physical activity, and behavior modification.
EFFECTS IN LACK OF PROTEIN INTAKE IN HUMAN BODY KayeMangubat22
1. This study examines the effects of inadequate protein intake in humans, finding it can lead to lean body mass loss and increased health risks like muscle wasting.
2. Adequate protein intake is important for weight regulation through increased satiety and thermogenesis, preserving lean body mass during weight loss.
3. Short-term inadequate protein intake in older adults can increase health risks like muscle wasting and metabolic issues.
This document discusses nutrition and dietary patterns across the lifespan. It defines key nutrition terms and outlines the essential macronutrients and micronutrients required for health. Specific information is provided on carbohydrate, protein and fat digestion and metabolism. Nutritional considerations and requirements are reviewed for different life stages from infancy to adolescence to pregnancy. Factors that can impact dietary intake are identified along with potential manifestations of altered nutrition. Nursing interventions to promote optimal nutrition are also described.
This document discusses basal metabolic rate and factors that affect energy balance and weight. It defines basal metabolic rate as the minimum energy required to sustain vital functions at rest. Several factors can influence BMR, including age, height, body composition, and thyroid function. It also discusses specific dynamic action, the increase in metabolic rate due to digestion of food, and how physical activity levels impact total daily energy needs. Body mass index is presented as a common measure of weight status.
These slides covers in detail on the things you can do to optimise your microbiome. From diversifying your dietary intake to having exercising routines and checking your habits; taking care of your microbiome will significantly boost your health and well-being. In short: a healthy microbiome gives a healthy you.
This document discusses theories of hunger and eating behaviors. It covers brain processes involved in hunger, theories like glucostatic and lipostatic set points, and positive incentive perspectives. Conditions like obesity and anorexia nervosa are examined in terms of causes, definitions, and treatments. Leptin's role in regulating body fat is described.
This document discusses body fat storage and metabolism. It explains that fat cells primarily store lipids for energy but also produce hormones. It then covers various fat storage locations and types of fat tissue. The rest of the document discusses hormones involved in fat regulation like insulin, leptin and cortisol. It provides examples of calorie intake calculations and guidelines for macronutrient distribution in the diet for fat loss.
Evolutionary theory suggests that humans have evolved certain food preferences that increased their chances of survival. These include a preference for sweet foods, which signified ripe, high-calorie fruits, fatty foods which provided more energy, and salty foods which contained essential nutrients. Research provides some support for these preferences, showing innate preferences in infants and universal adoption of sweet foods across cultures. However, evolutionary explanations are difficult to test directly and rely on observations and fossil evidence.
This document provides an overview of Dr. Armen Mehrabyan's theory of "conscious food" or "meaningful eating". Some key points:
- Ancient Armenian culture was an epicenter of cultural exchange in classical antiquity, and some of its ancient culinary traditions survive in modern Armenian cuisine.
- Dr. Mehrabyan proposes four main principles of "conscious food": that food is valued by its viability not calories; nutrients are natural gifts not scientific metrics; humans are sustained by spirit not food; and health relies on food vitality not chemical composition.
- He discusses the digestion process and how carbohydrates, fats, proteins and salts are broken down and absorbed to sustain the body
This document describes a study that examined the impact of different crude protein levels in the diet on the growth of lambs. Fifteen male lambs were divided into three groups and fed diets with low (100g/kg), medium (130g/kg), or high (160g/kg) crude protein levels. During the first 6 weeks, lambs on the low and medium protein diets gained less weight than those on the high protein diet. For the rest of the trial period, lambs on the medium protein diet had the highest growth rate. Digestibility was similar for the medium and high protein diets and higher than the low protein diet. Results suggest that the optimum crude protein level for growing lambs is
The document discusses theories of hunger, eating behaviors, and body weight regulation. It describes several factors that influence eating behaviors, including physiological hunger and satiety signals, learned food preferences, social and environmental cues. The dominant theories of a body weight "set point" are challenged, as factors like eating disorders, diet trends, and modern food environments contradict evolutionary models. New perspectives emphasize positive incentives for eating driven by food pleasure rather than just energy needs.
The document discusses how fat tissue is essential but obesity has become a worldwide epidemic. It describes several factors that have contributed to increased obesity rates, including changes to the human diet with the introduction of cereal grains, refined sugars and oils through agriculture, a more sedentary lifestyle, and genetic factors. The rise in obesity is linked to various metabolic diseases like type 2 diabetes, dyslipidemia, and insulin resistance.
The human body requires energy to perform basic functions and physical activities. The amount of energy expended varies depending on the intensity of the activity, from basic metabolic functions to vigorous exercise. Regular physical activity increases daily energy expenditure and can help maintain a healthy energy balance and weight. Lack of activity reduces energy expenditure and contributes to weight gain if not balanced with calorie intake. The lesson explores factors that influence energy expenditure and the relationship between physical activity, calorie balance, and health.
This document discusses macronutrients and their effects on obesity. It defines macronutrients as nutrients required in large amounts to provide energy, including carbohydrates, proteins and fats. Obesity is defined as excess body fat using body mass index. The document explores how different macronutrients like dietary fat, carbohydrates, fiber and protein can impact energy balance and risk of obesity, with high fat diets and refined carbohydrates linked to greater weight gain. Fiber is found to promote satiety and protect against obesity. The conclusion states that a low energy density diet low in fat can reduce calorie intake and obesity prevalence.
Human resources section6-textbook_on_public_health_and_community_medicinePrabir Chatterjee
This document appears to be the introduction to a chapter on nutrition in public health. It provides background on the history and evolution of nutrition as a science, defines key nutrition terms, and outlines some of the major categories of foods and nutrients. It also discusses the interplay between malnutrition and infection and notes that nutritional requirements can vary between individuals depending on factors like genetics, life stage, health status, and lifestyle.
The document discusses various topics related to nutrition including food classification, balanced diet, calorie and protein requirements, energy metabolism, basal metabolic rate, respiratory quotient, specific dynamic action, glycemic index, dietary fibers, lipids, and protein quality assessment. It provides definitions, formulas, guidelines and examples for each topic in a detailed manner.
Get Lean, Stay Lean by Dr Joanna McMillan www.weightlossinstitute.com.auSonja Bella
2013 Australian & New Zealand Weight Loss Leaders Summit (Sydney)
Dr Joanna McMillian is one of Australia’s best-known nutrition and healthy lifestyle experts, and is an author of several books including the award winning Inner Health Outer Beauty and the internationally published The Low GI Diet.
In her insightful presentation Dr Joanna will reveal:
The controversies in weight loss diets, the facts and the myths.
Food is more than the nutrients it contains – this information is a MUST for educating your clients.
A template for healthy eating, what does the doctor recommend?
Helping your clients take control of their own diet and lifestyle.
This document discusses the causes of leaky gut syndrome. It identifies four main causes: poor diet, chronic stress, toxin overload, and bacterial imbalance. Poor diet can cause leaky gut through nutritional deficiencies, fatty acid deficiencies, improper digestion, and a high intake of commonly aggravating foods like gluten, dairy, pulses, and spicy foods. Chronic inflammation, stress, parasites, pathogenic bacteria, and yeast infections can also damage the gut lining and cause increased permeability.
Stuart Phillips - ASN (Boston, 2018) Mind the GapStuart Phillips
This document discusses the importance of protein intake for aging individuals. It notes that longer lifespans have increased the prevalence of age-related declines in muscle mass and strength. Maintaining muscle through resistance exercise and adequate protein intake can help mitigate these effects. The document reviews studies showing that older adults may need more than the current recommended daily allowance of protein to optimize muscle protein synthesis and muscle mass. It advocates for an "optimal" protein intake of 1.2-1.5 grams of protein per kilogram of body weight per day distributed across meals to support muscle health in aging.
Nutrition is the process by which an organism consumes food and utilizes it in the body. It involves the intake of food and the utilization of its components like carbohydrates, proteins, fats, vitamins, and minerals by the body. Good nutrition is essential for proper growth and development as well as overall health and well-being of the body.
This document provides an overview of energy balance and weight control. It discusses factors that influence basal metabolism and physical activity, and how they impact energy needs and expenditure. The document estimates calorie needs and defines healthy versus unhealthy body weights using BMI. It also examines causes of obesity and strategies for successful weight loss and maintenance through calorie control, physical activity, and behavior modification.
EFFECTS IN LACK OF PROTEIN INTAKE IN HUMAN BODY KayeMangubat22
1. This study examines the effects of inadequate protein intake in humans, finding it can lead to lean body mass loss and increased health risks like muscle wasting.
2. Adequate protein intake is important for weight regulation through increased satiety and thermogenesis, preserving lean body mass during weight loss.
3. Short-term inadequate protein intake in older adults can increase health risks like muscle wasting and metabolic issues.
This document discusses nutrition and dietary patterns across the lifespan. It defines key nutrition terms and outlines the essential macronutrients and micronutrients required for health. Specific information is provided on carbohydrate, protein and fat digestion and metabolism. Nutritional considerations and requirements are reviewed for different life stages from infancy to adolescence to pregnancy. Factors that can impact dietary intake are identified along with potential manifestations of altered nutrition. Nursing interventions to promote optimal nutrition are also described.
This document discusses basal metabolic rate and factors that affect energy balance and weight. It defines basal metabolic rate as the minimum energy required to sustain vital functions at rest. Several factors can influence BMR, including age, height, body composition, and thyroid function. It also discusses specific dynamic action, the increase in metabolic rate due to digestion of food, and how physical activity levels impact total daily energy needs. Body mass index is presented as a common measure of weight status.
These slides covers in detail on the things you can do to optimise your microbiome. From diversifying your dietary intake to having exercising routines and checking your habits; taking care of your microbiome will significantly boost your health and well-being. In short: a healthy microbiome gives a healthy you.
This document discusses theories of hunger and eating behaviors. It covers brain processes involved in hunger, theories like glucostatic and lipostatic set points, and positive incentive perspectives. Conditions like obesity and anorexia nervosa are examined in terms of causes, definitions, and treatments. Leptin's role in regulating body fat is described.
This document provides an introduction to nutrition science, including key definitions and concepts. It discusses how nutrition has been studied historically and defines important terms like food, diet, nutrients, nutrition and nutritional status. It describes the major macronutrients that provide energy (carbohydrates, proteins and fats) and micronutrients needed in smaller amounts like vitamins and minerals. The document also outlines the functions of food nutrients in providing energy, building tissues, and regulating metabolic processes. It discusses the composition of the human body and factors considered in nutrition assessments.
This document provides an introduction to nutrition science, including key definitions and concepts. It discusses how nutrition has been studied historically and defines important terms like food, diet, nutrients, nutrition and nutritional status. It describes the macronutrients and micronutrients that provide energy and build human tissues. The document also outlines how nutrients are obtained from food and their various functions in the body, including providing energy, building tissues, and regulating metabolic processes. Finally, it briefly discusses the composition of the human body and relationships between nutrition science and other fields like medicine, biochemistry and physiology.
This document discusses healthy eating habits and what constitutes a healthy diet. It summarizes the author's experiments with different diets since 1990 and observations over time. The author concludes that a healthy diet based on natural, whole or minimally processed foods plays an essential role in well-being. There is no one diet that will work for everyone. The document then lists several healthy eating habits identified by the author, including avoiding sugar, processed foods, damaged/oxidized fats, polluted foods, and keeping omega-6 fatty acid intake in a healthy range. The author also recommends minimizing consumption of foods prone to fungi and mycotoxins.
This document provides an introduction to nutrition, defining key terms like nutrients, digestion, absorption, and metabolism. It discusses the importance of a balanced diet for preventing chronic diseases. The digestive system and classes of nutrients are explained. Carbohydrates are defined as the major source of energy, and are classified as simple or complex. The types of fats and their effects on cholesterol are summarized.
This document discusses basic principles of nutritional science. It defines key terms like nutrition, dietetics, and registered dietitian. It explains that nutrients perform three basic functions: providing energy, building tissue, and regulating metabolic processes. Carbohydrates, fats, and proteins are described as the main sources of energy. Vitamins, minerals, and fatty acids help build and maintain tissues. Finally, vitamins, minerals, water, and fiber help regulate chemical processes in the body.
NUTRITION AND HEALTH FOR NURSING STUDENTS.pptAnthonyMatu1
This document discusses nutrition and health. It begins by defining key nutrition terms like nutrients, balanced diet, malnutrition, and human nutrition. It then covers the importance of good nutrition, food classification including macronutrients and micronutrients, and sources and functions of proteins, carbohydrates, and fats. The document aims to demonstrate an understanding of the importance of nutrition for disease prevention and maintaining good health.
This document discusses nutrition and health. It defines key nutrition terms and classifications of nutrients including macronutrients like proteins, carbohydrates, and fats. It describes the importance of good nutrition for health, development, and disease prevention. Factors that influence nutritional needs like age, sex, and socioeconomic status are also outlined. The roles and sources of major nutrients are explained in detail.
This document provides information from Dr. Dolly Rani, an assistant professor of home science, on the topic of food, nutrition, and a balanced diet. It defines food and its functions, including physiological, psychological, and social functions. It discusses the concepts of nutrition, malnutrition, and the five main food groups. Key points covered include defining food and its role in providing energy, building the body, and having protective and regulatory functions. A balanced diet consisting of varieties from the five food groups is described as important for health. Factors affecting a balanced diet and different conditions of nutrition are also summarized.
The document discusses nutrition and its importance for health. It defines key terms like health, nutrition, and dietary guidelines. It explains that a balanced diet obtained from the major food groups is essential for meeting nutritional needs and maintaining overall health and well-being. The major food groups include grains, vegetables, fruits, dairy, and proteins. Maintaining a balanced intake of carbohydrates, fats, proteins, vitamins, minerals, water and fiber through a varied diet is important for optimal health. Undernutrition, overnutrition or malnutrition can negatively impact health.
This document provides an introduction to the science of human nutrition through defining key terms and concepts. It discusses that nutrition plays a significant role in life from before birth. Nutrients are divided into macronutrients and micronutrients which provide energy, build tissues, and regulate metabolic processes in the body. Carbohydrates, proteins and fats are the main sources of energy. The human body is composed primarily of water with other major components being protein, fats, minerals and carbohydrates. Nutrition is assessed through historical information, anthropometric measurements, biochemical tests and clinical examinations. Signs of good nutrition include well-developed body, ideal weight, and resistance to infection. Nutrition overlaps with other sciences such as
The document discusses the benefits of the Mediterranean diet. It states that the Mediterranean diet has been found to reduce the risk of heart disease, Alzheimer's, cancer, diabetes and other health conditions. It then outlines seven key healing factors supported by foods in the Mediterranean diet: oxidative protection, chelated minerals, enzyme nutrition, dietary fiber, healthy fats and plant oils, anti-microbial protection, and collagen support. The document delves into further detail on each of these seven healing factors and how foods in the Mediterranean diet provide these benefits to fuel the body's optimal healing state.
This document provides an overview of basic nutrition concepts. It defines key terms like nutrition, food, nutrients, digestion, and absorption. It also describes the digestive system and the roles of the mouth, esophagus, stomach, small intestine, and large intestine. Additionally, it covers food groups, dietary guidelines, food guides like the USDA food pyramid, recommended dietary allowances, food exchange lists, nutritional labeling, and concepts like basal metabolism, basal metabolic rate, and factors that affect metabolism. The document serves as an introductory compilation on basic nutrition.
This document provides an overview of basic nutrition concepts. It defines key terms like nutrition, food, nutrients, digestion, and absorption. It also describes the digestive system and the roles of the mouth, esophagus, stomach, small intestine, and large intestine. Additionally, it covers food groups, dietary guidelines, food guides like the USDA food pyramid, recommended dietary allowances, food exchange lists, nutritional labeling, and concepts like basal metabolism, basal metabolic rate, and factors that affect metabolism. The document serves as an introductory compilation on basic nutrition.
The document provides an overview of basic nutrition concepts including definitions of nutrition, dietetics, nutritionists, dietitians, foods, diet, energy, nutrients, non-nutrient substances, and the six major classes of nutrients - carbohydrates, lipids, proteins, vitamins, minerals, and water. It then discusses each class of nutrients in more detail and other related topics such as nutrient density, empty calorie foods, chemical composition of nutrients, and recommended dietary allowances. The document is authored by Aamir Ali Khan and is intended as a introductory lecture on nutrition and dietetics.
This document provides information about carbohydrates and fiber. It defines carbohydrates as compounds that provide an important source of food and energy. Carbohydrates are classified as "good" or "bad" depending on their fiber content and added sugars. There are three main types of carbohydrates - complex, which include starch and fiber; simple from natural sources; and simple from added sugars. The document recommends choosing fiber-rich carbohydrate sources and outlines daily fiber intake goals.
Nutrition and relation to biochemistry lecture no 1muti ullah
This document discusses nutrition, biochemistry, diet, and energy requirements in the human body. It defines key terms like dietetics, nutrition, nutrients, and dietary reference intake (DRI). It describes the essential macronutrients and micronutrients needed for the body. It also explains how energy from food is used in the body through processes like basal metabolic rate and the thermic effect of food. Respiratory quotient is discussed as the ratio of carbon dioxide produced to oxygen consumed during nutrient oxidation.
The document discusses the human digestive system and its processes. It describes how the small intestine allows for digestion and absorption of nutrients through its muscular walls and villi. Various organs like the pancreas and liver secrete enzymes to break down food into smaller molecules that can then be absorbed. The lungs actively ventilate to allow for gas exchange while neurons transmit messages and hormones distribute signals widely. Overall, the physiology of the human digestive and other body systems works in a complex yet coordinated manner to sustain life.
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𝐓𝐉 𝐂𝐨𝐦𝐬 (𝐓𝐉 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬) is a professional event agency that includes experts in the event-organizing market in Vietnam, Korea, and ASEAN countries. We provide unlimited types of events from Music concerts, Fan meetings, and Culture festivals to Corporate events, Internal company events, Golf tournaments, MICE events, and Exhibitions. 𝐓𝐉 𝐂𝐨𝐦𝐬 provides unlimited package services including such as Event organizing, Event planning, Event production, Manpower, PR marketing, Design 2D/3D, VIP protocols, Interpreter agency, etc.
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NewBase 20 June 2024 Energy News issue - 1731 by Khaled Al Awadi_compressed.pdfKhaled Al Awadi
Greetings,
Hawk Energy is pleased to present you with the latest energy news
NewBase 20 June 2024 Energy News issue - 1731 by Khaled Al Awadi
Regards.
Founder & S.Editor - NewBase Energy
Khaled M Al Awadi, Energy Consultant
MS & BS Mechanical Engineering (HON), USAGreetings,
Hawk Energy is pleased to present you with the latest energy news
NewBase 20 June 2024 Energy News issue - 1731 by Khaled Al Awadi
Regards.
Founder & S.Editor - NewBase Energy
Khaled M Al Awadi, Energy Consultant
MS & BS Mechanical Engineering (HON), USAGreetings,
Hawk Energy is pleased to present you with the latest energy news
NewBase 20 June 2024 Energy News issue - 1731 by Khaled Al Awadi
Regards.
Founder & S.Editor - NewBase Energy
Khaled M Al Awadi, Energy Consultant
MS & BS Mechanical Engineering (HON), USAGreetings,
Hawk Energy is pleased to present you with the latest energy news
NewBase 20 June 2024 Energy News issue - 1731 by Khaled Al Awadi
Regards.
Founder & S.Editor - NewBase Energy
Khaled M Al Awadi, Energy Consultant
MS & BS Mechanical Engineering (HON), USAGreetings,
Hawk Energy is pleased to present you with the latest energy news
NewBase 20 June 2024 Energy News issue - 1731 by Khaled Al Awadi
Regards.
Founder & S.Editor - NewBase Energy
Khaled M Al Awadi, Energy Consultant
MS & BS Mechanical Engineering (HON), USAGreetings,
Hawk Energy is pleased to present you with the latest energy news
NewBase 20 June 2024 Energy News issue - 1731 by Khaled Al Awadi
Regards.
Founder & S.Editor - NewBase Energy
Khaled M Al Awadi, Energy Consultant
MS & BS Mechanical Engineering (HON), USA
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3. 3
Introduction
This is a sketch of the ideas that are developed more fully in the book. The health
and fitness strategies developed fully in the book are based on a few key ideas:
1. The human mind and body are non-linear dynamic systems poised in a far-
from-equilibrium attractor. Health, fitness and diet are dynamic concepts.
Linear, static thinking (counting calories consumed and expended) is com-
pletely inadequate for devising effective strategies for health and fitness.
2. Human form and energy metabolism are adaptations to the evolutionary
environment. Virtually all of our human and prehuman ancestors lived as
hunter-gatherers in an environment dominated by Ice Ages.
3. Insulin resistance spares glucose for the brain and was an essential adaptation
to the glucose scarcity during the Ice Ages. In a modern world abundant
in cheap and readily available carbohydrate, insulin resistance sets us up
for hyperinsulemia (chronically elevated insulin) which is a major factor in
almost all modern diseases.
4. Hyperinsulemia and hypoexertion (wasting away of the lean mass of the
body through inactivity) are the most important health risks (the National
Institutes of Health) in Western cultures.
5. A conservative and effective strategy for attaining superior health and fitness
is to counter hyperinsulemia and hypoexertion by incorporating diet and ac-
tivity patterns from our evolutionary past.
6. An evolutionary diet is not a ”diet”. In the conventional meaning, being
on a ”diet” implies that you are restricting calories (as in a prescription)
and eating in a habitual manner. Evolutionary eating is not a diet, but a
natural way of eating. Properly considered, the purpose of a diet is to provide
nutrition and maintain health, not to lose weight.
7. In the Evolutionary Fitness Diet you consume abundant simple, fresh plant
foods rich in minerals, flavonoids, phenols, and phytochemicals, substances
that coevolved over millenia with humans and that no manufactured drugs or
substances could reproduce with present technology. The low carbohydrate
and near zero raw glucose content of the diet, combined with the natural
antioxidants provide protection from glucose-mediated oxidative damage to
body proteins; the advanced glycation end products that accelerate aging and
the stiffness caused by cross-linked proteins in connective tissues.
4. 4
8. You do not eat in a habitual and highly regulated way; indeed, variation in
foods and caloric intake is an essential element of natural eating. Your food
is high in protein (by modern standards, but moderate in terms of the protein
intakes of hunter-gatherers), moderate in fat (but balanced in Omega 3 and
6 composition), and low in carbohydrate. It contains no grains, milk, beans
or processed foods. There is no caloric restriction because you eat only
nutritionally dense, low calorie food and your appetite is reset to become a
healthy guide to your nutritional needs.
9. An evolutionary activity pattern is mixed and varied. It contains brief, in-
termittent episodes of highly intense physical action mixed with languid pe-
riods and play. Healthy activities mimic the patterns of wild animals and
contain elements of chaos and order. Power laws that are typical of self-
organized, far-from-equilibrium, dynamic systems, describe such patterns.
10. Power law training, which is developed in the book, mimics the ancestral
activity pattern and promotes hormone drives that counter hyperinsulemia
and build lean body mass.
11. Most fitness programs, whether aerobics or weight training, are too unvaried
and routine; they result in overtraining, depletion of the body’s antioxidant
stores, compromised immunity, and are a chronic load on the body. They
take too much time and are ineffective. Dieting has a 95% failure rate wastes
lean body mass, and is unhealthful.
12. The evolutionary fitness diet and exercise program is very effective, takes
little time, and is fun. It is the right way to feed and care for your hunter-
gatherer body and mind.
Human Evolution
The story of human evolution is one of adaptation in a patchy and dangerous en-
vironment. We are generalists, not specialists, and that is why we are adaptive
two-legged omnivores with broad territorial range, small stomachs and big brains.
Humans embarked on a risky strategy for survival: we “chose” to live by our wits
by exploiting a wide territory and many foods along with opportunistic capture
of high nutrient, but fugitive and random, food sources. We lived virtually all of
the 3 or so million years of human and prehuman history as scavengers or hunter-
gatherers. Exploiting our generalist niche led to the elegant evolutionary design of
the human body and mind. In order to exploit a patchy environment with plentiful
low-grade nutrients and scarce and variable high value nutrients, the human mind
5. 5
had to become clever. We became adaptive opportunists. The human body had to
solve the energy storage problem. Given a random food supply and variable en-
ergy expenditure, our metabolism is evolved to solve a complex stochastic energy
management problem.
Many of the characteristics of our metabolism derive from the evolved solu-
tions to the energy flow problem. We clearly are designed to live at an energy
surplus, not at the balance preached by modern, steady state models of fitness. I
won’t go into that here, but it is enough to say that, given random energy intake and
expenditure, a precise matching of the two is impossible and matching on average
would guarantee an early death. One answer to achieving stochastic energy bal-
ance is male/female pairing. Another is the ability to carry high-density nutrients
in our hands so that nourishment can be taken to safer grounds and given to mates.
Yet another answer is our ability to store energy as fat, along with the appetite to
rapidly gorge fat-laden meat and bone marrow. Our metabolism can turn against us
when calorically rich, but nutritionally depleted, food is all around us and available
at little expenditure of energy.
Life in a patchy resource environment requires the capability to perform a wide
variety of activities. Clearly, the body’s design tells us that extreme exertion of brief
duration was an important human attribute, essential for our survival and evolu-
tion. Our upright, bipedal posture gives us the mobility to cover the range required
of an omnivorous generalist. A large brain is required for hominids to cover the
widest range known to any animal species. High value nutrients are essential to the
energy-demanding brain and small stomach required for high mobility in a patchy
savanna where high value nutrients are variable and fugitive. Our muscle fiber
composition reveals that we are adapted to extreme intensity of effort. And the en-
ergy sources of these fibers shows that the highly intense activities through which
our ancestors ”earned a living” were of short duration (anaerobic metabolism came
before aerobic metabolism, which was grafted on later and the quickly exhausted
fast twitch fibers are likely to be the most primitive of our sources of movement).
Our ability to sweat, our relative hairlessness, our upright and, hence, cool pos-
ture, our mobility, as well as our temperature regulation and appetite mechanisms
are designed to solve the problem of keeping an energy-hungry, but delicate, brain
alive in an energetic body capable of high mobility and peak energy bursts.
Evolutionary Design
Evolutionarily elegant design economizes on processes and energy. As a conse-
quence many structures and processes serve dual functions. Evolved design re-
sulted also in many compromises. These dual and compromised designs, which
6. 6
are reliable at the high and variable energy flows of our active ancestors, go awry
at the low energy flux typical of a modern, sedentary individual. Many of the
metabolic disorders–obesity, carbohydrate intolerance, diabetes–which we see to-
day, are a result of these design compromises. These ”Western Diseases” are rare
among hunter-gatherers and were not part of the human ancestral experience. They
reflect an adaptation of the human body, which was designed for high-energy ex-
penditure and variable diet and activity patterns, to modern life.
Because human metabolism is conditional on activity patterns, diet alone is not
sufficient to control body composition and obesity. The body ”reads” its food in-
take and hormone messengers in the context of its activity patterns, so the message
contained in a biochemical messenger is decoded through the dynamic patterns of
our actions. This is why inactivity and food deprivation are so counterproductive
in controlling obesity. It is also why sedentism and its associated low energy flux
produce overeating.
The essence of human beings is that they are complex, adaptive and self-
organized systems. Adaptation is the essential human characteristic and movement
is the canonical form of its expression. Self-organization is anchored by reference
to a dynamic body image, which lets there be a self to serve as the fixed point from
which the world is perceived. Inactivity not only changes the human body; it alters
the very structure of our perception and understanding. Sedentary life weakens
body image, which is the reference of an organized and autonomous self. The re-
sult of inactivity is a lack of purpose and will. It takes good dynamics to produce a
coherent, self-organized individual and actions that are metabolically challenging
produce a good body image that anchors a strong and convergent dynamics. The
brain is adapted to action and its structure and health depend on movement. Long
ago, Darwin noted that the brains of wild animals were larger and heavier than the
brains of domesticated animals.
Metabolic Revolutions
Two metabolic revolutions shaped the evolution of Homo sapiens. One important
revolution was when archaic Homo sapiens adapted to the glaciations and made
the transition from hunter-gatherer to big game hunter. This was 100,000 years
ago. This revolution supplied the dense, high quality nutrients and lipids that let
the brain expand. Brain size expanded rapidly during the past 250,000 years, more
rapidly than in the preceding 2 million years. Brain expansion was preceded by
an expansion in body size, so much so that archaic humans show bodies with fully
modern features. They seem to have been at least as large as the latest genera-
tion of well-fed Americans and far more powerfully built. It is significant that the
7. 7
development of the magnificent human body preceded the evolution of the human
brain. Such a brain could not live and would have no purpose but for the supremely
adaptive human body whose actions and perceptions it integrates.
The second metabolic revolution, and arguably the most important revolution
in the history of Homo sapiens, was the agricultural revolution beginning about
10,000 years ago in Asia and near the Mediterranean. Agriculture came later to
Europe, perhaps only 6,000 or 2,000 years ago. Great Britain was still making its
transition to agriculture at the time Caesar’s army entered around 100 BC. The pa-
leoanthropological evidence shows that with the agricultural revolution there was
a decline in stature, cranial capacity, and muscularity, along with a general de-
cline in health and nutrition. (How do they know our preagricultural ancestors
were muscular? The bones are thick and dense and the points where muscles were
attached are robust.) This metabolic revolution substituted routinized, repetitive
work of grinding intensity and a diet of low variety and protein content for the
metabolically varied physical activities of hunting and gathering and the enormous
variety of food and high protein content of hunter-gatherer diets. Within a few
thousand years much of humanity had come to rely on a few starchy crops for the
overwhelming bulk of their calories. The repetitive work of agriculture and grain
processing left their mark in the high incidence of arthritis that is found in the
skeletons of our agriculturist ancestors.
Even today, most of the third world lives on a few starchy crops and they ex-
hibit the damage that a high carbohydrate diet with too little fresh plant and animal
foods can inflict. Those people who populate the areas where agriculture began
earliest show what is called a Mediterranean physical type characterized, accord-
ing to Webster, as medium or short stature, slender build and small heads. Third
world children, living in rural, agricultural areas, live almost entirely on grains.
They rarely eat fresh fruit or vegetables and eat meat even less often. They achieve
less stature and test performance than urban children and suffer skeletal and den-
tal deficiencies. It is easy to tell from the skeletons of our ancestors whether they
were agriculturists or hunter-gatherers. The agriculturists have bad teeth, bone le-
sions, small and underdeveloped skeletons and small craniums compared to hunter-
gatherers.
The important metabolic revolutions to follow agriculture were the industrial
and information revolutions. These energy-conserving revolutions lowered the
level and variety of the metabolic challenges we face still more. The industrial
revolution introduced milling of grains, a major factor in elevating the starch con-
tent of grain-based foods with a consequent rise in their insulin-elevating effect on
human metabolism. In addition, the mineral and phytochemical content of grain-
based foods were dramatically reduced.
Our ancestors are us. It was only 10,000 years ago that agriculture changed the
8. 8
human lifeway from hunting and gathering to settled agriculture. And the dramatic
decline in human energy expenditure of the industrial age occurred no more than
200 years ago. The information and television age is no more than two decades
old. In this brief time span evolution has made few, if any, changes in what we
inherited from the prior 3 million years.
Fitness in a Modern World
The adaptive and variable energy demands of our ancestral existence are gone.
We live a low energy flux and metabolically unvaried existence in bodies designed
for another lifeway. We are hunter/gatherers in pin-stripe suits, living a seden-
tary life and it is killing us in ways our ancestors never experienced. Virtually
all the degenerative diseases–atherosclerosis, diabetes, high blood pressure, os-
teoporosis, declining muscle mass–of modern civilization are unheard of among
hunter-gatherers and were not part of our ancestral experience. Most modern fit-
ness prescriptions are static and agricultural. These programs model the body as
a machine, not as an adaptive organism. Consequently, they prescribe a regime in
which the body is under-fed and over-trained. They are not based on adaptation,
but on steady state analysis. These models assume the body is a linear process
that maintains a steady state. In fact, all bodily processes are highly non-linear and
these non-linearities must be exploited in any effective fitness program. The key to
exploiting the highly non-linear and dynamic adaptive metabolic processes of the
human body is to achieve the right mixture of intensity and variety of activities.
Here is an example of the Zen-like twists that adaptive, non-linear systems
like human metabolism follow that confound mechanistic thinking. The body uses
fat in the aerobic (ST and lower IT) zone. So, linear thinking suggests that to
burn fat you should operate in that zone. It would not surprise someone trained to
understand the adaptive capabilities of the human body that if you burn more fat
the body will find a way to produce more. And this is just what happens when you
energy flows over the aerobic pathway—your body releases hormone messengers
that signal higher fat production.
You do burn a higher proportion of calories as fat in the aerobic zone, but that
is no reason to stay there. You burn more calories and more fat in total when you
train at high intensity. And you do not open the metabolic pathways that cause
your body to make more fat. Energy that flows over the anaerobic pathway signals
your body to make more muscle and to burn fat.
You incur an oxygen depth that raises metabolism for days after a high intensity
session. Above all, you bring adaptations that burn fat. As the body remodels in
response to the adaptive challenge presented by a brief, high-intensity session, it
9. 9
preferentially burns fat. In addition, you put on lean muscle mass that burns energy
continuously. From 60 to 70 per cent of the energy you burn is at your basal
metabolic rate. If you gain lean muscle mass you raise your basal metabolic rate
and, thus, burn more energy 24 hours a day.
Mechanistic prescriptions fail because they do not present the metabolic chal-
lenges and variety of the ancestral environment for which our bodies are designed.
If your personal trainer is working you out three days a week, doing three sets
of the same exercises, or, worse, 5 or even 6 days a week, find another trainer.
Working out 5 or 6 days a week doing many sets of exercises per body part and
spending over an hour per workout imposes a chronic load on the body for which
it is poorly designed to adapt. You are flooding your body with hormones that
consume lean body mass. These hormones also preferentially consume fast twitch
muscle, the very substance you are after for strength, lean mass, and vitality. You
are draining your adaptive capacity so that you cannot build, or even keep up with
the load. Worse still, you are compromising your immune system. Virtually all the
body’s adaptive mechanisms are designed to deal with acute, not chronic, stresses.
Exercise should mimic the activities of our ancestral existence; we are adaptive
organisms that thrive on variety, not machines designed for high volume routine.
The Evolutionary Model
The evolutionary model combines activities of varying intensity to mimic our an-
cestral hunter-gatherer existence. The key is to hit the right balance of intensity
and variety. You have to live in the fast twitch (FT) muscle fiber zone where your
metabolic rate is many times your basal metabolism for intermittent, brief inter-
vals. Most sedentary individuals live entirely in the ST region and never achieve
the metabolic peaks that are essential to adaptation. Grim aerobicizers and high
volume weight trainers live in the slow twitch (ST) and intermediate twitch (IT)
muscle fiber zone and do way too much work.
The evolutionary model of a healthy lifestyle is to combine brief, but intense,
work outs in a gym (the FT zone) with a wide variety of activities that mix inten-
sity and duration randomly (mixing the IT and ST zones with brief spurts into the
FT zone). Roller blading, bicycling, walking, sprinting, tennis, basketball, power
walking, hitting softballs and so on are the sorts of activities that mix IT and ST
fibers with intermittent FT action.
Activities are spaced randomly according to a power law distribution which
not only fits the hunter-gather activity rhythms but also virtually every process
in a healthy human being—healthy heart beats, brain waves, cellular ion channel
pulses, and the coordination dynamics of movement all have the distinctive sig-
10. 10
nature of self-similarity and power law variation. It is when these patterns show
too much regularity that organization and coordination break down; for example,
epileptics show too much, not too little, regularity in their brain waves. Heart at-
tacks are the result of too much regularity in contractions that leads to a loss of
coordination and seizure.
A power law looks like this:
20 40 60 80 100
Frequency
-beta
Plot of Frequency
20
40
60
80
100
Intensity
Think of this graph as showing what percentage of a day you spend at different
metabolic levels. Measure intensity by METs, the multiple by which your activity
exceeds your basal metabolism. Most individuals spend nearly all their time at
an exertion level that is just above their basal metabolism; roughly 90% of their
day is spent between 1 and 2 METs. Most of the frequency of Office Worker is
located at the low intensity activities and there is little mass at the higher intensities.
Unlike a ”normal” distribution, there is a good deal of mass at the far right tail in a
power law, where extreme activities are located. The evidence indicates this kind
of intensity-frequency mix was typical of our ancestors. The far right tail, at the
peaks and with brief duration, is the FT zone. The middle zone is the IT and ST
zone and the peak at the left is the ST zone. Our ancestors got more rest, were
on average more active, and engaged in highly intense activities to a much greater
extent than we.
You need to live intermittently and briefly in the FT zone to live according to
our ancestral lifeway. You also need to get plentiful rest. One of the worst features
of modern life is its compression in the variability of our activities—both the right
hand and left-hand tails are compressed relative to the variation in a power law.
When the ends of the activity distribution are compressed to the middle, our activ-
ities fall within a narrow frequency band. A compressed distribution is a chronic
stressor, we get neither enough playful, intense activity nor enough rest. Animals
11. 11
in the wild move according to power laws. Think of a lion or jaguar. They are
muscular and lean and spend long periods in languid rest and brief, highly intense
periods in the hunt.
Fitness from Chaos: Power Law Training
Why is a power law a good model of adaptive training? A power law describes a
statistical distribution of intensity and frequency of action that is characteristic of a
complex adaptive system functioning at maximum efficiency. Power law variation
represents a balance of order and variability that is representative of self-organized,
adaptive systems. All humans are self-organized dynamic systems. Systems that
live in the critical region between order and chaos display power law behavior.
How do you train according to a power law? A power law of the form
Intensity = Frequency−β
gives the right balance of structure and novelty. The music of Bach and Mozart
contains the mixture of structure and novelty characteristic of power laws. The
power law is a statistical distribution, meaning it describes probabilities, not cer-
tainties. Hence, randomization is an essential element of power law training. But,
so is pattern. Your activities cannot be randomized excessively, or they lose pat-
tern and drift without memory. There will be some drift in frequency so that there
will be time periods when you will not do high intensity workouts for two or more
weeks (periodization falls out of the power law naturally). At other times, you
may have 2 or 3 high intensity sessions in a row. The real point is to embrace ran-
domness and variety within the context of structured repetitiveness. Good intuitive
models of power law variation are the movements of the wild lion or the music of
Bach or Mozart.
NBA basketball is an example of power law variation. Pro basketball is not an
aerobic sport, it actually is an anaerobic sport full of power moves, quick bursts,
sprints, and leaps mixed in with half time rest, quarter breaks, pauses, free throws,
time outs, and bench time. What NBA players have is the ability to use these brief
intervals to quickly recover their phosphate energy stores (they use the alactic path-
way discussed below). NBA athletes and NFL defensive backs provide evidence
that power law training makes you powerful and lean. NBA players are the leanest
and most powerful in any professional sport (their body fat is around 5 to 7 per-
cent). NFL defensive backs and running backs come close (around 8 percent body
fat). Like NBA players, NFL defensive and running backs do burst/rest moves
through out the game, randomly timed, with a duration and intensity pattern that
looks like a power law (patterns are not bunched up around a mean, they are spread
12. 12
over all scales and with the characteristic power law shape shown in the graph
above).
A power law distribution of activities means the intensity, spacing, duration and
volume of training are variable in order to present a constant novelty in metabolic
challenges while retaining enough structure and repetitiveness to maximize adap-
tive capability. When you train like a hunter, you follow a power law distribution
of intensity and frequency. You distribute activities so that you hit highly intense
metabolic peaks briefly and intermittently. This is the FT fiber region. You also
scale intensity within a set.
Fast Twitch Threshold Sets
In order to hit all the fibers and scale intensity according to a power law, I do su-
persets of ascending weight and descending repetitions. The sequence is intended
to move up the energy and muscle fiber hierarchy, recruiting successively more
muscle fibers and different fiber types until all but the FT fibers drop out. This
exploits the ”size principal” which says that the threshold of intensity needed to
fire the muscles increases with the size of the motorneuron. The FT fibers have
the largest motorneurons and, therefore, require the highest intensity to fire. Power
law training exploits this feature.
You apply the technology by doing supersets of ascending intensity to force
the ST and then the IT fibers to drop out until only the FT fibers are left. I begin a
set with a fairly light weight, lifting and lowering the weight slowly to prefatigue
the ST fibers. Do this for 15 repetitions. Then, taking only enough time to increase
the weight, do 8 to 10 more repetitions at a faster speed. Increase the weight one
more time and do 4 to 6 repetitions at high, but controlled speed. I also slightly
increase the speed within each set of repetitions, aiming at the FT fibers near the
end of each stage.
I pause between stages of the superset just long enough to change the weights
and this 10 to 20 seconds is enough to regenerate the ATP and PCr to do the next
set. By the third phase, the lactic acid is burning, but it will quickly be taken up
because I don’t do any more of that exercise and move on to something completely
different. (This is an advanced technique. It takes conditioning and a tolerance for
lactic acid to get to this stage. To begin, do only two stages of the superset, aiming
for 12 and 7 reps. Then move on.) I may aim at 15 reps, 8 reps, 4 reps in each
phase of the superset, but no one is counting; it is always the acid burn that tells
me when to stop, not some preset target of reps.
After I devised this technology, I went from 11 percent to 6 percent body fat. I
work out in a very sophisticated gym that is full of body builders, many of whom
13. 13
are famous, but no one in the gym is more symmetrical or has a denser and more
cut musculature than I. It isn’t genetic, it is the power law technology and the evo-
lutionary diet, along with the muscle maturity that comes with years of exercise.
The technology promotes hormone drives that make you lean and strong, and keep
you young. You must work major muscle groups in every work out and not waste
time on ”show” muscles. Small muscles, like biceps, do not promote hormone
drive which is the primary objective of any workout. Upper and lower back, shoul-
der girdle, chest, and leg work are the foundation of a symmetrical, powerful and
lean body. They promote GH release, increase the insulin sensitivity of the muscle,
and down regulate insulin levels. DO NOT ingest ”gainer” drinks after a work-
out; they quench the GH response and promote excessive insulin levels which puts
on fat, raises blood pressure, compromises immunity, and sets you up for insulin
resistance—the precusor to the Western Disease.
Ultimate Power: Alactic Training
Another variation in the power law technology I use in my training is designed to
work what is called the alactic energy pathway. This training exploits power law
variation as well but it works farther into the far right tail of the power curve, well
up the intensity scale into the FT fiber region. In this region, the duration of effort
must be extremely short, on the order of a few seconds and milliseconds. Here,
you imagine an ancestor like Homo erectus running on the grassy savanna to a
patch of trees to escape one of the formidable predators that roamed over Africa 2
million years ago. Ancestral humans had the ability to sprint at high speed as well
as the endurance to trek over long distances efficiently. Indians used to run down
horses over a period of a week, or kept wild turkeys from resting on tree branches
until they dropped with exhaustion; they were able to catch deer by sprinting to
intercept its escape path (the deer escape in a characteristic curve which the hunter
knew and intercepted). The alactic pathway is what supplies this energy in the first
few seconds of the sprint; it is the engine for the ”fight or flight” response that
permits us to make our quickest and most powerful moves. Sprinting is an alactic
exercise: it promotes high levels of lactic acid which stimulates growth hormone
release (this is the reason sprinters tend to be muscular and lean).
The alactic pathway is called that because it relies on the high-energy phos-
phates stored in our muscles whose metabolism is rapid and does not produce lac-
tic acid. Hence, it is a-lactic. The muscles contain enough phosphates (PCr and
ATP) to generate extremely high force for up to 3 seconds. During that time the
movement is powered primarily by FT fiber. Beyond that time you begin to use
muscle glycogen and produce lactic acid. Those extreme physical feats you hear
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about—mothers lifting cars off their children and so on—draw on this high-energy
pathway. At peak intensity, some athletes may generate up to 7,000 or 8,000 watts.
This power is generated in very brief episodes; for example, in a high jump a power
of 4,000 watts is produced in 0.02 seconds. For duration exceeding a minute, only
elite, highly trained athletes for can produce a rate of 350 watts no more than 4 or
5 minutes. Beyond a second or two at high power levels, lactate begins to accumu-
late and limit performance. These data fit a power law perfectly in the way power
declines with duration (see the power curve above). They are further support for
the power law training techniques developed in my book.
I do sets that I call 1/5s or ”one, fives” because that describes how to do them.
I do one repetition, then put the weight down for 5 seconds. Then do another
rep and put the weight down another 5 seconds. Then do another set, and so on
for a sequence of about 4 to 8 repetitions. That’s it, then move on to the next
exercise. What you have done is to achieve between 4 and 8 high quality repetitions
without building lactate. The 5-second pause between reps is enough to regenerate
the muscle phosphates if you are in reasonable shape. Up to 10 seconds pause
is appropriate until you have acquired the ability to recover quickly. You can use
reasonably heavy weight without the risk that goes with doing multiple repetitions
with heavy weights.
Alactic training is much safer and more productive of strength than training
to full failure. The reason is simple; doing multiple repetitions builds lactic acid
that limits your power and ability to handle heavy weight. By doing just 1 rep and
resting 5 seconds you retain nearly all of your muscle power. This lets you handle
heavier weight and do quality movements. You never force yourself to work to
failure, as many muscle magazines and training authorities seem to recommend.
There is no danger because you use a weight that is below your maximum and do
not try to force a depleted muscle through another repetition. There is no straining
to try to do that ”last rep”. An example of an alactic workout.
The theory that the ”last rep” is the best one is wrong in my opinion. You
have little strength left by then because the high-energy phosphates are gone and
the lactic acid limits your strength. This means that the reps leading up to that
last rep must use a weight well below what will tax your muscle when it is at full
strength. Multiple reps build endurance, not power. Your endurance is developed
by the ascending sets discussed above. Also, much of what passes for endurance is
actually the ability to recover quickly from peak effort (this is the kind of endurance
NBA players have). By doing a sequence of 4 to 8 or more 1 reps with 5 seconds in
between, you train your recovery ability so that you restore power quickly. Because
phosphate replenishment uses the aerobic pathway, and uses fat preferentially over
carbohydrate, you indirectly develop your aerobic capacity and burn fat as well
when you do alactic training.
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Power Walking
Our ancestors walked a lot carrying heavy weight in order to move camp and bring
back as much of the kill as they could. Power walking, laden with real weight on
the order of 35 to 100 pounds, is an effective modern version of what our ances-
tors did. Power walking with back pack or scuba diving weights around the waist
dramatically increases the intensity and effectiveness of walking. And it is about
as effective as jogging for aerobic capacity, without the pounding and damage. It
is what women among hunter-gatherers do when they gather. For example, Kung
San women typically carry an infant on a seven-mile trip foraging for plant foods
and return with a 35-pound load. They only do this 2 or 3 times a week for they
live in a kind of natural affluence where food is readily available. Males among
hunter-gatherers do not carry the large game our ancestors did and are not a good
model of power walking for modern males.
Consider this instead as a model. A historical source reports that 5 Indian
braves drove 5 bison into a pit. After they killed these 2000-pound bison, they
pulled them out of a pit more than 10 feet deep, lined them up and skinned and
butchered them. Then, they carried as much as they could back to camp to get
others to return for the rest. I think that is a wonderful model of fitness, combining
speed, power, strength, stamina and courage. You can be sure this successful hunt
was followed by plenty of rest and play and feasting. This model is what I seek to
emulate.
Personalizing Your Training
Everyone has to adapt their own workouts and activity patterns to their own capac-
ities and intentions. If evolution teaches us anything it is that we are all different
even though we share a large set of common attributes and metabolic processes.
For most people, a move from mechanistic training to adaptive training would con-
sist primarily of cutting back on the number of sets and how often they work out.
This is combined with a pushing up of the pace and intensity and cutting way back
on the number of sets and length of the workout.
The sophisticated variations on the power law that I use are not required and
are there when you gain condition and strength. A brisk and intense workout that
leaves you feeling challenged in each exercise, whatever your personal level of
fitness, is what we are after. One upper and one lower body workout per week,
of no more than 40 minutes duration, and one all around workout per week of
completely different exercises is a good model to begin with. The all around work
out should be focused on symmetry and grace and the more intense workouts on
17. 17
the large muscles.
Symmetry
Symmetry is crucial for it is a reliable evolutionary clue to health and, hence, it is
something we find attractive. Tumors and pathologies produce gross asymmetries
and our love of symmetry reflects the reproductive success of our ancestors who
were sensitive to these clues. Stay away from biceps and triceps stuff, they make
you lose symmetry. Women are turned off by a lack of symmetry. Men whose
arms, traps, or lats (the most overworked muscles in most gyms) are out of balance
with the rest of their body don’t look good. Both men and women see this be-
cause it relates to ancient wisdom: non-symmetrical people are not as healthy or as
functionally capable in the ancestral habitat where maintaining life was a difficult
task.
Work on calves, traps, neck and back. You look taller, another reliable evo-
lutionary clue that women use to find good genes, if you move more mass to the
neck and shoulder girdle and to the calves. And you will be more balanced and
powerful. A thick trunk is another evolutionary clue. It is a signal that suggests
pregnancy in the female and pathology in the male. I strive for the X-LOOK—a
symmetrical balance of mass in the shoulder girdle, upper (not lower) chest and
back, the calves and lower quads. This requires strict form so that you do not use
your trunk to heave weights (”Cheating” on curls, for example, is mostly a middle
trunk exercise and a stressor to your lower back. You should only do one or two
sets of curls a week, focusing on concentration curls to peak the bicep.). If you
work out like a grunt, heaving and cheating on reps, you will look like a grunt.
Intensity and Brevity
Power law training requires intense but brief workouts and long intervals between
sessions. Intensity and brevity are the keys to promoting the hormone drives that
are essential to adaptation. So important are these drives that one could say they are
the real objective of the workout. A workout that is over long depletes the adaptive
hormones and causes a surge in destructive hormones.
The open intervals between high intensity sessions are filled with activity of
intermediate and low intensity, with a spurt into the FT zone. These activities
include roller blading, hiking with one of my grandchildren in a back carrier, or
walking and sprinting in deep sand at the beach, riding my motorcycle on back
canyon roads and high mountain dirt trails (wind chill is a very effective device for
18. 18
shedding fat), shooting baskets, and so on. This is not a frenetic schedule, filled
with mandatory exercise. It is playful and fun, not work.
Variation in weight, repetitions, and speed is consistent with power law train-
ing because there is no characteristic scale in a power law. Power law activities
exhibit self-similarity at all scales. This means for speed, weight, and duration.
My workouts are randomly timed; they may fall on two consecutive days, though
this would be rare. At the other extreme, they may be a week apart. I aim for one
upper and one lower body high intensity work out per week along with one easier,
all round work out. Sometimes, I feel like more and may do up to 4 workouts of
varying intensity during a week. Often only one or two workouts fill out the week.
An average workout is 25 minutes. No workout is more than 40 minutes; most are
shorter. I often finish my whole workout while other people are still doing sets on a
machine or a body part. I never leave the gym tired, just relaxed and feeling good.
The Philosophy of Evolutionary Fitness
If you think about the challenges our ancestors faced it will help you realize that
what some fitness and motivational experts see as motivational problems are ac-
tually evolved adaptations. Recognition and acceptance go a long way toward
helping you make healthy changes.
The fact that you are alive is a remarkable thing. The odds against it are great.
The genes you carry contain information from a continuous strand of surviving or-
ganisms that extends 2 billion years back in time. You are an improbable event and
your existence is testimony to the toughness and adaptiveness of the ancestral line
from which you come. You are a survivor, well equipped to live and be successful
in the world for which your body and mind are adapted. Recognize, however, that
the world for which your genes encode a successful design is not today’s world; it
is the world of some 10,000 to 40,000 years ago.
Your brain and body ”expect” you to live as a hunter-gatherer. They are highly
adaptive by design, for that is the key requirement of our ancestral lifeway. But,
a natural life is one of movement and action, of challenge and response, of va-
riety and adaptation. Your brain still ”sees” sensory inputs as though you are a
hunter-gatherer and, at the instinctual level, directs your actions according to what
spells adaptive success in the environment of your ancestors. (Example: you freeze
before a large audience because your ancestors increased their odds of surviving
when exposed on open ground by freezing to escape detection.) If you accept that
some parts of this metaphor are true of you, you will be more relaxed and less apt
to punish yourself for things you do, or don’t do (like get out and move around).
Laziness and over-eating are adaptations that let your ancestors pass their genes
19. 19
down to you. These labels place over-critical value judgements on what are evolved
adaptations. Energy was a precious resource in the ancestral environment, and it
still is in the third world where people barely get enough to eat. What we call
laziness is an adaptive, instinctual behavior that kept our ancestors from wasting
precious energy in a world where high-energy expenditure was required for food.
Because the agricultural revolution dramatically lowered the price of carbohydrate,
we have abundant and cheap food energy available at nearly zero energy expendi-
ture. Because cheap carbohydrate is all around us, the caloric return to our food-
seeking energy expenditures is so high now that we have to find ways to expend
energy in healthful ways. Evolutionary training ”tricks” the brain into thinking it
is still 40,000 BC and resets your metabolism as well.
Variety and play are the essential human attributes. By keeping your work outs
brief and exhilarating you won’t get bored. By adding lots of outdoor activity and
play, you will enjoy the power and fitness you gain. If you start a new sport, or
pick up one long neglected as you begin evolutionary training, you will see how
the power you gain improves your play. The feedback between the training and
your new power in the sport will be habit forming. (The evolutionary basis of sport
seems clear. For example, the number of players in most popular team sports today
is about equal to the number of prime age males that would be alive in a typical
Paleolithic band of hunter-gatherers.)
So, train outdoors often and in preference to any other sort of training. The
gym is essential to build and retain healthy muscle mass, flexibility and strength.
But, the gym is cognitively sterile. Don’t walk on a treadmill, get outside and walk
over uneven terrain. Hike with a heavy pack, sprint now and then when you take a
walk. Play tag with your kids.
Don’t set goals. Most of the goals we seek in fitness or appearance spelled
health and success in the ancestral habitat; some of these adaptations retain their
value, but many do not. What you think of as goals are actually strategies your
genes have for getting you to act in ways that propagate your genes to the next
generation. The goals you are likely to choose are not functional and relate pri-
marily to appearance (how else can you explain plastic surgery, which reduces or
risks functional capabilities, other than as an attempt to achieve the appearance that
spelled youth and fertility or good genes in the ancestral habitat?).
You will say you want to lose x pounds, but you really want to lose fat not lean
body mass. You actually want to gain lean body mass. Goals that relate primarily
to appearance are not deep enough to sustain you. They do not relate to function
and process. Goals set you up for failure. If you don’t achieve them, you will
become impatient and quit. In trying to speed your progress you will work out too
often and imitate the people in the gym around you who do too many sets and do
body builder exercises that are not productive.
20. 20
Don’t over-train. I fail to see how anyone can train 5 or 6 days a week in the
gym and for hours at a time. That is factory or agricultural work, not anything
human beings were evolved to do. And the paradox is that you will gain less
strength and fitness if you overtrain. And you will join the thousands who quit out
of sheer boredom.
You can’t control the outcome, only the process. Be concerned only with where
you want to go, not with getting there. Most of all, learn to enjoy the process
not the outcome. Variety is essential to unlocking the dynamics from unhealthy
patterns. You must have enough variation in your life to move the dynamics to
better attractors. And you cannot reflect on your habits and ruts if you are inactive
because it takes new challenges to reveal the disfunction of existing habits.
Modern life is cognitively deprived. Imagine the information processing capa-
bilities that were exploited by an ancestor foraging for food alone, or with a small
band on open Savanna. Alert to every clue that indicates the presence of game,
plants, and predators, aware of self, wind direction, the habits of animals, and with
intimate knowledge of the land, trusting and depending on long-evolved instincts
and other members of the band, adapting to rapidly changing circumstances, a for-
aging human in the Paleolithic would appear to us to have extrasensory perception.
This is the setting for which your mind is evolved.
Modern life leaves our minds restless and under utilitized because we are con-
fined, inactive, and comfortable. That is why we restlessly seek stimulation and
sensory satisfaction. Some find it in entertainment (an industry that could not exist
but for the extraordinarily stimulating environment of our ancestors) in the form
of television, movies, or novels. Others seek it in simulated adventure like moun-
tain climbing or dangerous sports (like me). We cannot be satisfied with more and
more, because we are evolved for another lifeway in which material goods do not
matter. The result is that we are deeply unsatisfied with modern life and don’t know
why.
Just accept that what you are doing is what your body and mind were made
to do and that this more active and metabolically challenging, but playful and fun,
lifestyle is how it is going to be from now on. Your form will remodel to fulfill the
functional demands you place on your body. Learn to be a good animal.
Lean Body Mass and Health
Intermittent, intense and brief workouts build muscle mass that burns energy con-
tinuously. They promote hormone drives that keep you young. They switch the
body’s metabolic pathways so that food goes to muscle and organ mass and not
to fat. The intensity is the key to reaching the fast twitch fibers of the muscles,
21. 21
which are the key fibers to staying young. A primary indicator of aging is loss
of fast twitch muscle fiber. Retaining your metabolic headroom through intense,
brief and variable training promotes retention of lean body mass, organ and brain
mass—you stay younger and smarter than joggers and dieters who lose muscle, or-
gan and brain mass. Aerobic exercise of long duration and moderate intensity isn’t
the answer. It promotes free radical damage through the oxidation of fat and when
it is done often enough and at low intensity, it catabolizes muscle mass. There
is a suspiciously high rate of cancer among marathoners. Lean body mass is the
primary indicator of health status. Death is universal among persons who lose 40
per cent of their lean body mass. Lean body mass is the most accurate predictor
of survival time for victims of starvation, trauma, infection, AIDS and other acute
diseases, regardless of the nature of the disease. So powerful a predictor of health
status is the rate of loss of lean body mass that it seems to be part of the process of
dying. Rapid protein wastage is a mediator, not just an indicator of death.
Dieters beware. Rapid weight loss wastes lean body mass. Starvation studies
show that brain mass may decline as much as 3 to 5 per cent with food deprivation.
Other organs lose far more mass. A pigeon lost 93 per cent of its fat tissue, but 45
per cent of its heart, 42 per cent of its skeletal muscle and 71 per cent of its spleen
on a starvation diet. Brain scans of anorexics reveal that they have shriveled brains.
People who eat only once a day waste lean body mass all day. They are awash
in catabolic hormones that use lean body mass to try to keep their brain alive on
the glucose it requires. When they finally eat, they eat so much they get a surge
of insulin that packs the energy in the food away in fat. Over time, their body
composition changes—they come to have this small body inside a relatively inert
shell of fat. They look large, but the active part of them is small.
Don’t keep track of your total weight; keep track of your lean body mass. Your
lean body mass is the real, metabolically active, you. It is the tissue that allows you
to function and think and live. If you gain lean body mass, you lose fat and you
keep it off because your metabolic rate rises. Everyone should keep track of his or
her lean body mass to monitor his or her health status.
Aging is a slow form of lean body mass loss. What we call aging is sedentary
aging and carbohydrate abuse. The accumulation of damage from hypoexertion
and hyperinsulemia over a longer time scale is what aging is in Western countries.
Adults lose about 5 per cent of their lean body mass per decade after they enter
their thirties. Most of the muscle they lose is FT fiber, for they cease by some age to
live in the FT region. They settle into the ST region and, consequently, as they age
their muscle fibers atrophy. The 40 per cent rule may hold here too. Progressive
aging and deterioration resulting in a 40 per cent loss of lean body mass may be a
precursor or mediator of the dying process. The aging just die over a longer time
scale than do acutely ill individuals.
22. 22
The Evolutionary Fitness Diet
Evolutionary Fitness eating is simple, but it isn’t everything. One must consider
food intake in the context of activity patterns. You are an open energy system—
energy flows through your metabolic pathways out into the environment around
you. You must attain a rate of energy flow or flux that is more characteristic of
ancestral patterns so that appetite becomes a reliable clue to food intake. A higher
rate of flux will also be a key to directing nutrients to muscle, bone, brain, and
organ tissue rather than to fat. Here are some keys to Evolutionary eating that are
balanced against the practical reality that we live in the 21 century rather than in
40,000 BC. I do not try to eat like a Paleolithic ancestor, but I do use the insights
of the scientific literature on the Paleolithic diet to guide my food choices and
eating patterns. I also pay close attention to the scientific literature on nutrition and
exercise; but, I use evolutionary reasoning to interpret this literature because it is
full of contradictions.
Homo sapiens is an omnivore; your diet must contain an ample variety of fresh
plant foods and lots of amino acids and essential lipids. The only universal charac-
teristic of ancestral and living hunter-gatherer diets is the almost complete absence
of grains and simple carbohydrates. There were no simple carbohydrates like sugar
and pasta in the evolutionary past. The Ice Ages were times of protein plenty and
scarce fat and carbohydrate. Fruits were tough and fibrous, not the refined, sweet
stuff we have today. The closest thing to a simple carbohydrate was honey that was
rare and guarded by wild bees. There were no grain or cereal sources of carbohy-
drates in the ancestral diet. Hunter-gatherer diets contain an enormous variety of
plant foods and are high in protein (the median is about 35 per cent of calories from
protein). Human metabolism cannot handle protein levels above 35 per cent over
a long term. Cofactors, in the form of fat or carbohydrate, are required in order to
utilize protein. So, variety and quality are the key objectives of the Evolutionary
Fitness Diet.
Live at high-energy flux and eat randomly, varying food intake to the scale of
activities. This includes the odd brief fast, as though hunting is lean. The body reg-
ulates food intake naturally when you live at the high-energy flux of an evolutionary
trainer. It is when we are sedentary and live at low energy flux that our appetite
mechanisms fail to match energy intake to expenditure (the evidence shows that
infants regulate energy intake precisely and children only lose this ability when
they become sedentary).
Animals confined to feeding pens or cages eat more than they expend in energy.
That is how cattle are fattened for slaughter. Humans who live at low energy flux
because they are sedentary and inactive will over eat, just like cattle in a feeding
pen. Even though they are free to move about and are not caged, their metabolism
23. 23
is trapped in a feeding pen mode. It’s another one of those evolutionary paradoxes.
When we are inactive, we trigger an eating response and eat more than we expend
in energy. The basis of this may lie in an adaptation that would let our ancestors
recover from the intense activities of the hunt by eating beyond their energy re-
quirements when they rest in order to rebuild tissue and energy stores. The ability
to eat beyond energy needs would be essential to the survival of any organism that
lived in the world of our ancestors with its variable energy expenditure and intake.
The answer is clear: live as though you are a free-ranging, adaptive human
being, not like some animal being fattened in a pen for the kill. It is hopeless to
try to attain the precisely balanced intake and expenditure of calories preached by
diet promoters. And it is impossible to do if you are sedentary for you trigger this
evolved over eating adaptation.
Our ancestors were better nourished than all but a few of us because they ate
low calorie, nutritionally dense foods, all fresh and uncontaminated, and they ate
in large quantities to fulfill their high energy needs. Dieters who face calorically
rich foods with low nutrient content and who eat in small quantities face a real risk
of malnutrition. If they are sedentary the risk is even higher because they must
restrict food intake so severely.
I am more concerned with energy expenditure than intake, for it is energy ex-
penditure that determines energy flux and appetite. High-energy flux brings our
appetite control mechanisms into the ancestral range where they were evolved to
operate.
Live as though you are in the world that existed before the invention of agri-
culture. There was no grain or cereal or manufactured food in the ancestral envi-
ronment. Our ancestors ate fresh fruits and vegetables and meat. They got no milk
beyond the age of 4. They ate no cereals and consumed no vegetable oils. Their
diets were not particularly low on fats; indeed, for a few million years prehuman
hominids may have lived on the fatty bone marrow and brains of scavenged kills
more than on fresh meat. Even when they became premier big game hunters, hu-
mans preferred the fatty cuts of meat because the wild animals they hunted were
very lean. Modern meat contains around 33% fat as opposed to 4% fat in wild
game. And, there is a higher proportion of saturated to unsaturated fat in grain-
fattened meat. Consequently, even a diet moderate in fat, say 40%, is high in satu-
rated fat when it is composed of modern meats. In addition, most individuals who
eat moderate or high amounts of fat get it from fast foods and bakery products and
eat few vegetables or fruits. The fat in modern grain-fed animals and in fried foods
and baked goods is heavily weighted in Omega 6 fatty acids relative to Omega 3
acids and contains large amounts of hydrogenated fatty acids. Taken together, this
imbalance of Omega 6 to Omega 3 fatty acids and the novel fat molecules that
result from hydrogenation can play havoc with cell membrane health and func-
24. 24
tion. Remember, your brain, nervous system and vascular system are comprised
primarily of membranes; any disfunction in these critical areas can be devastating.
A preference for fat was adaptive in the ancestral habitat, but is maladaptive
in a modern world awash in abundant sources of fat. Nonetheless, fat intake is
essential. Our brains use glucose for energy (and hence our preference for sweets)
but are made of lipids. Some of these essential brain lipids can be gotten only from
animal fat. The problem is to balance fat requirements against its over-abundance
in the American diet and to achieve the desired fatty acid profile which is more
heavily weighted to saturated fats in the American diet than the Paleolithic diet. A
similar point can be made for minerals: calcium, potassium, and magnesium are
too low relative to sodium in the American diet and are far from the Paleolithic
ratios.
Seeds did not become a major component of the diet until about 14,000 years
ago. Vegetable oils are a completely novel substance in the evolution of human
eating. The processed oils now recommended so heavily by nutritionists are no
more than a few decades old. Processing and hydrogenation alter the shape of the
fatty acids and these altered shapes play havoc in the cell membrane function. They
are readily oxidized to form free radical chain reactions that damage body tissue.
Fat imposes a load on the body’s antioxidant defenses. People who eat modern
sources of fat and few vegetables tend to be deficient in antioxidants which may
put them at risk to cardiovascular disease and cancer (oxidative stress appears to
play a role in both diseases).
The intolerance that many people show to grains, eggs, milk and seafood can,
in part, is explained by how recently they entered the human diet. Many of us
are poorly adapted to these foods, particularly if we are from a culture that began
to rely on agriculture or dairying recently. We are not adapted because gene fre-
quencies have not settled to the range where such individuals become rare in the
population. That will happen only after enough time has passed for the lactose-and
grain-intolerant among us to leave fewer children to carry our genes into the future
than those who can eat the stuff.
The other trigger to food intolerance is through the mechanism of molecular
mimicry. Milk and grains contain proteins that were foreign to human metabolism
until some 10,000 years ago. The space of proteins is vast, on the order of 20200
proteins can be formed from the 20 amino acids. The immune system must recog-
nize self- from non-self and proteins that are foreign from those that are not. Some
of the proteins in milk and grains mimic those found in pathogens and trigger an
immune response. Others increase the permeability of the human gut and thus per-
mit undigested protein remnants to pass into the intestines and blood stream where
they may trigger an immune response. The rising incidence of autoimmune dis-
eases such as lupus, multiple sclerosis, and arthritis is another indicator that there
25. 25
is a mismatch between a human metabolism of ancient origin and modern food.
Epidemic carbohydrate intolerance is another clue that we are not yet adapted
to a post-agricultural, post-industrial, information age diet. Epidemiological evi-
dence suggests that the populations most at risk are those groups that adopted agri-
culture recently: Eskimo, Pima, Navajo, African-Americans, Asian-Americans,
and Northern Europeans. To emphasize once more, a universal in the omnivorous
human eating record as reflected in hunter gatherer diets and in the ancestral diet is
the absence of simple- and grain- or cereal-based carbohydrate. The conventional
wisdom and diet advice of the experts that you should eat grain- or cereal-based
carbohydrate flies in the face of the evolutionary record. You should get your
carbohydrate from fresh vegetables, which are also the major source of minerals,
flavonoids, and phytochemicals in your diet.
Stay cool and exposure your skin to fresh air and sunlight. Don’t be warm
and cozy all the time. End your shower with a cool rinse over your legs. Wear as
little as you can tolerate for your workouts. If you can’t stay warm working out,
you aren’t going at it at a high enough pace. (Carrying a trendy water bottle slows
you down too and ties up equipment for others.) Expose your skin to fresh air by
wearing shorts in cold weather to hike. Bare your arms to the air and the sun, but
be sensible about the amount and intensity of the exposure.
Vitamin D deficiencies are common, particulary in cold climates. Children are
particularly vulnerable, as are African-Americans (dark skin produces less Vitamin
D than a light skin) and the elderly. The new practice of wearing sun blocks and
covering the skin increases the likelihood of Vitamin D deficiency, with a conse-
quent risk for bone density. Life is full of these trade-offs–preserve your skin, risk
your skeleton. You can change the terms of the trade-off by eating the Evolutionary
Fitness diet which is high in calcium from dark, leafy vegetables and bones.
Eat when hungry. For me, that is at about 3 times a day, often more, but
sometimes less. Eating once a day degrades lean body mass and reduces your
metabolism. Your lean body disintegrates and your fat mass increases. Nobody
who wants to be lean and healthy should eat only once a day. On the other hand,
eating should not be too regular. Energy intake must be varied and there should
be long intervals between your evening meal and breakfast. Compress your caloric
intake into a 6 or 8 hour window every now and then. This mimics the Paleolithic
alteration between feast and famine days. But, there are even more important rea-
sons to do this.
Research (and my experience) suggest that a compressed eating window, with
no reduction in caloric content, can provide the low body fat and life extension
benefits of caloric deprivation, the only know intervention shown reliably to extend
life. Why caloric deprivation extends life is not known, but one reason may be that
the calorie-deprived rats are compared to ad libitum fed rats and both are caged.
26. 26
In other words, the other rats with whom the calorie-restricted are compared are
pigging out. Another reason may be that caloric deprivation activates a moderate
adrenal response and helps to retain an adaptive response to stress. But, that can be
achieved by eating in a narrow time window, with a relatively long fast over night.
The night fast also promotes growth hormone, a known factor in staying lean and
retaining muscle, neural, and cardiovascular mass.
Three square meals a day will make you fat. Foods eaten every day can become
toxic. Variety and quality are the essentials of a healthy diet.
Take antioxidants. Our food sources of minerals and antioxidants are not as
rich as those of the ancient past. Free radical oxidation of body tissues is one
of the primary aging mechanisms. Scavenge these free radicals with antioxidants
and with the natural phytochemical antioxidants abundant in fresh vegetables and
fruits.
The beauty of the 40,000 BC eating model is that you eat no canned, frozen,
packaged, or manufactured food. Your diet consists of fresh fruits and vegetables,
eaten raw whenever possible, and lean meat. I do not eat raw meat because I no
longer trust our food supply. The model offers a conservative strategy for ridding
your diet of empty calories while it guides your food choices to highly nutritious
foods. You don’t have to read labels because nothing you buy to eat comes with
a label (nature doesn’t do this). Some latitude is necessary (I do not believe in
rigid rules for anything anyway), but the 40,000 BC model is always guiding your
choices.
Conclusion
Does evolutionary training work? Power law variation and intermittence are the
right features of human activity. There is a growing body of evidence of the effects
of anaerobic activities on body composition, lean body mass and insulin sensitivity.
Does evolutionary eating work? The natural diet and high nutrient density of
the Evolutionary Fitness diet along with virtually no simple carbohydrates makes
you so lean that blood lipid levels improve dramatically. The high phytochemi-
cal and antioxidant content of the Evolutionary Diet protects blood vessels and all
body tissues from oxidative damage. The metabolically expensive muscle tissue
that Evolutionary Fitness creates burns blood fats and elevates insulin sensitiv-
ity. Heightened insulin sensitivity means that food does not elevate blood insulin,
which shuts down fat burning. Consequently, energy flows to muscle, organs,
nerves and not to fat. My blood profile is in the ”no risk” category for cardio-
vascular disease. And the infrequent, high intensity work of Evolutionary Fitness
gives my heart enormous ”head room” which is essential to its ability to adapt to
27. 27
stress and retain its healthful chaos.
Evolutionary Fitness is the only model of fitness that is based on adaptive sys-
tems theory and evolutionary reasoning. Power law training is the right technology
for the human body. It works so well you will feel like you are cheating. The body
is a decentralized, dynamic object; it quickly turns off to an over-arching, central
controller brain dictating its moves and energy sources. I cover this in my ”Mind
as Movement” sections in the book. Among many other reasons, it is this cru-
cial feature of body/mind integration that makes the other diet and fitness formulas
fail; they are examples of the Soviet, command and control approach to health and
fitness and they fail miserably. Their followers grind sets in the gym, pedal their
stationary bikes for hours, or jog the healthy variation out of their hearts. This ”top
down” command and control approach breaks the mind/body unity and is doomed
to failure. Followers of such systems don’t have fun and turn the healthy stress of
exercise into distress and even disease.
The path to fitness is indirect and non-linear; grim determination and Soviet-
style overtraining won’t get you there. Episodic, intense, brief sessions that are fun
and end on a note of success (a marker of adaptation) rather than grinding routine
and fatigue (markers of failure and non-adaptation) are the keys to success. None
of these systems produce the muscularity, power, leanness or symmetry that you
get from Evolutionary Fitness.
Less is more. You cannot load a stressful diet and fitness program that is pred-
icated on undereating and overtraining (and virtually all of the calorie counting
aerobics-based programs are of this type) onto a busy professional life. You can do
Evolutionary Fitness and still have a successful and productive life without the risk
of poor nutrition and over training. Power law training is so productive you will
spend very little time in the gym, usually from 1 to 2 hours a week. The intensity
of training like an adaptive hunter is exhilarating and the brevity leaves you feeling
fresh. You gain time for work and play. You also gain toughness and energetic
plasticity that leaves you poised for the many adaptive challenges that life brings.
In short, live, eat, work and play like it is 40,000 BC while you enjoy what the
modern world has to offer. Take care of that hunter-gatherer mind and body that
you carry in that pinstriped suit.