Generally, obesity is considered more than one-fifth overweight to the normal weight range. Obesity can be defined as excessive enlargement of body's total quantity of fat. There is no biologic reason for men and women to get fatter as they grow older. Therefore the standard for over fatness for adult men and women should probably be established as men above 20% and women above 30% body fat. The location of adipose (fatty) tissue in the body should also be considered, fat distributed in the abdominal region poses a greater health risk compared to fat deposited at the thigh and buttocks.
Obesity is an alert labelling of a "Killing disease”. Obesity is implicated most strongly in coronary disease. Overweight also contributes to the development of diabetes, hypertension, and elevated blood lipid levels, kidney and gallbladder disorders. Obesity has been implicated in increased incidence of some types of cancer like cancer of colon, pancreas, breast, uterus, kidney and gallbladder. Overweight persons suffer from osteoarthritis (joint pain), menstrual irregularities, bad body odour, and disturbing psychological health. It is a most common nutritional disorder in affluent societies. Luxurious, inactive and sedentary life style of today made a great increase in obese individuals.
The weight charts for men and women according to their heights (BMI) are only rough indications of the state of overweight or obesity. Confirmation are done with high level of lipid profile, waist circumference as a measure of abdominal adiposity and finding out risk factors for diseases associated with obesity, such as high blood pressure and physical inactivity.
The Ayurvedic approach to conventional drugs in general is quite different. Herbal supplements can be of great benefit in weight control without the negative side effects of conventional drugs. With the diet therapy alone, the treatment of obesity is incomplete. Diet can avoid the further possibilities of obesity, but the fat has to be treated and the defective metabolism must be corrected, which is done by Ayurvedic medicines. These medicines improve fat metabolism in an obese individual. Once a person's metabolism is correct it is easy for him to maintain his weight. In spite of this external therapies such as udwartanam, rooksha kizhi (manal kizhi, podi kizhi), dhanyamala dhara etc along with abhyantara rookshana (takra pana) have immense result.