HBS110 Lecture Notes - Lecture 2: Health Promotion, Weight Loss, Chronic Condition
Document Summary
Good (but not perfect) correlation with percentage body fat. As your bmi increase so does your risk of death. Is not accurate for: children or elite athletes. Calculating bmi= weight in kgs/height in m^2. Use standardised reference tables to determine weight status classification using bmi. Improvement in depression has often been reported following weight loss. A negative body image is either a distorted perception of your shape or feelings. Bodies converting glucose form food to energy. Glucose stayd in the blood, low levels of insulin. Set point theory: body has a set range, bodies may sabotage weight loss by holding onto calories, helpful survival technique. Ghrelin: feel hungry, high ghrelin high hunger, want it low and stable. Leptin: higher because fuller quicker, the brain isn"t using the leptin when obese. Fat cells: there are 25-35 bilion fat cells health weight, these cells can increase in size, hypertrophy, can increase in number hyperplasia.
