Anorexia is an eating disorder where people starve themselves because they have great fear of weight gain, even when they are underweight. It involves limiting the amount of food a person eats and can result in starvation and an inability to stay at the minimum healthy body weight for a person's age and height. Lack of enough food and exercising too much can result in severe weight loss. Genetics and social attitudes toward body appearance play a major role in anorexia.
Attribution: Straight Talk Foundation