OBESITY is the major health problem in US. IT affects more than 60 million people. IT causes diabetes Type 2, Heart Diseases, hypertensions, stroke, some cancers, osteoarthritis, sleep apnea, gall bladder disease, self esteem, pshycological health (depression). Death rate is 2X times more. BMI = weight(kg) / hieght(m)^2. or weight(lbs) X 703 / height(inches) ^ 2. UNDERWEIGHT less than 18.5 %. has incresed risk. NORMAL is 18.5 - 24.9 %. HAs normal risk. OVERWEIGHT is 25 - 29.9. has increases risk. OBESE is 30-35 (high) , 35- 40 (very high) 40 - (Extremely high). additional risks is waists in men greater than 40, female greater than 35. 5 kf or more wieght gain since 18-20 yr. poor anaerobic fitness, specific races and ethinicity. FAT CELLS - Adipocytes. FAT TISSUES- Adipose tissue. Fat cells secrete proteins that rigger changes throughout the body. When fat stores expand secretion of some proteins increases while others decreases. There are more inflammatory proteins. Less of a hormone that assists insulin and more fat storage aroudn abdomen. Obese people are less sensitive to leptin. BODY FAT NORMS (M,F) ATHLETIC (7-11,14-18) GOOD (12-16,19-23) OVERFAT (17-24, 24-31) OBESE (above 25,32) , Essential fat fr males is 3 ercent. females is 12 %. RESTING METABOLIC RATE: energy needed to keep you alive in a resting awake state. accounts for 55 - 75 % of daily intake. Women need atkeast 1200 Kcal /day , MEN need 1500 - 1800 Kcal. 1lb = 3500 calories i.e. 500 calories per day/