In conclusion fasting for a few days has no lasting effect on weight loss. Hence for real successful weight loss a combination of a low calorie intake and exercise is the only healthy way to lose weight permanently. In childhood, the causes are hereditary tendency, social causes, and lack of activity. In adolescence, the causes are puberty, inactivity, and junk food. In adulthood, disturbances in eating habits and patterns by visual factors, olfactory factors, psychiatric illnesses, boredom, and social causes.
Marriage can also be a factor in causing obesity.
In women, obesity can also occur during pregnancy, lactation, in infertility, or menopause. Obesity develops when calorie input exceeds calorie output. Diseases Obesity is a chronic condition and hence before embarking on any weight loss programme one must realise that the programme will have to be continued lifelong, failing which all the lost weight will be back again in no time. You must also keep in mind that your aim has be a reduction in the fat and not the lean tissue of your body. The three main nutrients which you get from food are proteins, carbohydrates and fats.