Nutritio nand digestion1
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Nutritio nand digestion1

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Nutritio nand digestion1 Nutritio nand digestion1 Presentation Transcript

  • NUTRITION AND DIGESTION
  • • Nutrients are substances found in foods that provide energy and materials for cell development, growth, and repair. • The amount of energy available in food is measured in calories
  • • There are 6 kinds of nutrients: – Proteins – Carbohydrates – Fats – Vitamins – Minerals – Water
  • • Proteins are large molecules that contain carbon, hydrogen, oxygen and nitrogen. They are made up of amino acids. • Amino acids are the building blocks of protein – Essential amino acids cannot be made by the body’s cells, and must be supplied by the food you eat • Protein is used for growth and repair of body cells and helps to form muscle, skin and hair
  • • Carbohydrates are the main source of energy in the body • All carbohydrates are not the same
  • * There are three types of carbohydrates: sugar, starch and fiber - Sugars are simple carbohydrates - Found in table sugar, fruits, honey, milk… - Simple carbohydrates are digested and absorbed quickly
  • • Starches and fiber are complex carbohydrates • Complex carbohydrates are absorbed more slowly; they help maintain healthy blood sugar levels facilitate steady, long-lasting bouts of energy
  • • Starches are made up of many simple sugars in long chains – Pasta, potatoes, rice, white breads…
  • • Fiber is found in the cell walls of plant cells • Fiber cannot be digested. It is needed to keep your digestive system healthy - Fiber is found in whole grain breads and cereals, beans, vegetables and fruits
  • • Fats or lipids are necessary nutrients because they provide energy and help your body absorb vitamins – Fat tissue cushions your internal organs – Fat is a storage unit for energy; it can release twice as much energy as carbs – Excess energy from all foods you eat is converted to fat and stored for later use.
  • • Unsaturated fats are liquid at room temperature – Vegetable oils, avocado, the fats in nuts and seeds
  • • Saturated fats are solid at room temperature – Animal products such as meat and milk are sources of saturated fat – Saturated fats are associated with high levels of cholesterol in the blood • Cholesterol can block blood supply to organs and increase blood pressure. This can lead to heart disease and stroke
  • • Vitamins are organic nutrients needed in small amounts for growth, regulating body functions, and preventing diseases. • Most foods provide some vitamins, but no one food has them all * Organic means that they are derived from living matter
  • • Minerals are inorganic nutrients that regulate chemical reactions in the body • Your body uses about 14 different minerals • The minerals used in largest amounts are calcium and phosphorus • Other minerals include potassium, iron, and sodium
  • • Water is the most important nutrient for survival • The human body as about 60 percent water – Your cells need water to carry out their functions
  • • Your body loses water through breathing, sweat, and excretion • Water needs to be replaced every day • Water is not only found in liquids but also in many foods
  • • Because no food has every nutrient, you need to eat a variety of foods to maintain optimum health. • A food group is a collection of foods that contain the same type of nutrient • There are five food groups: – Bread/cereal – Vegetables – Fruit – Dairy – Meat/beans