Obesity

416 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
416
On SlideShare
0
From Embeds
0
Number of Embeds
20
Actions
Shares
0
Downloads
19
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Obesity

  1. 1. OBESITY
  2. 2. OBESITY - WHAT IS IT? Presence of excess body fat Determined by body mass index (BMI) BMI = weight (kg) / height (m) 2 BMI of 25 to 29.9 = Overweight BMI of over 30 = Obese Being overweight is associated with a higher risk of disease, particularly if the body fat is concentrated around the abdomen.
  3. 3. CAUSES OF OBESITY Obesity is a complex disorder with multiple interactive causes Obesity occurs when a person consumes more kilojoules (energy) than he or she burns (through physical activity) The cause of the imbalance between kilojoules input and output may differ from person to person
  4. 4. CAUSES OF OBESITY - BIOLOGICAL FACTORS Gender; women carry more fat, but men carry more fat around stomach, therefore greater risk CVD Age; maintenance of body weight becomes more difficult with age Genetics; including inheritance of specific body type
  5. 5. CAUSES OF OBESITY - BIOLOGICAL FACTORS  Hormonal factors; BMR; basal metabolic rate - Your basal metabolic rate, or BMR, is the minimum calorific requirement needed to sustain life in a resting individual. It can be looked at as being the amount of energy (measured in calories) expended by the body to remain in bed asleep all day! - Thyroxin (hormone produced by the thyroid gland) is a key BMR-regulator which speeds up the metabolic activity of the body. The more thyroxin produced, the higher the BMR.
  6. 6. CAUSES OF OBESITY - BEHAVIOURAL FACTORS Eating behaviour; food choices, cultural influences, emotions, eating habits, attitudes Lack of Physical activity; the amount and intensity of exercise
  7. 7. CAUSES OF OBESITY - ENVIRONMENTAL FACTORS Technology; has increased time being sedentary (not active), computers, remote controls etc Industrialisation; increased availability of high fat, sugar and energy dense foods Urbanisation; people living environment that promotes sedentary lifestyles eg. Take away food outlet convenience
  8. 8. OBESITY - A RISK FACTOR FOR… Life threatening chronic illness; CVD, type 2 diabetes, hypertension, stroke, cancers Non-fatal debilitating conditions; reduce quality of life, gall bladder disease, respiratory difficulties, infertility and osteoarthritis Psychological problems; depression, low self esteem
  9. 9. ROLE OF NUTRITION AS A PROTECTIVE FACTORFOR DISEASE  An individuals nutrient and food intake can have both short-term and long-term consequences on their health.  Food choices can act as a protective factor against certain diseases.  Some commonly consumed foods are energy dense, rather than supplying a range of nutrients  Regular consumption of these foods decreases the quality of nutrient intake.
  10. 10. CONTINUED The associated level of protection foods offer, is very closely linked with other factors such as;- Physical activity- Biological influences- Genetics (includinggender)

×