One of the most effective ways to lose weight is to reduce your food intake. If the calories in the food consumed are less than those required by the body for daily activities, the body uses the fat stored in the body as a source of energy. This can result in rapid weight loss , often at the rate of more than one kilo a week.

However, care should be taken to ensure that the food consumed on diet contains all other nutrients required, else the health of the person could be adversely affected in the long term.