Anorexia nervosa is a common eating disorder, which can be life-threatening. The literal meaning of anorexia is "loss of appetite", but the term is misleading as people with anorexia nervosa often feel very hungry though they refuse to eat food.
The characteristic features of this disorder are self-starvation and excessive weight loss. A person with anorexia nervosa loses more weight than is considered healthy for his or her age and height by severely decreasing food intake. They may have a distorted perception of their body weight or shape and have an intense fear of weight gain (even when they are much below normal weight for age and height). They may diet, do excessive exercises or use other methods to lose weight.
The disorder is suspected in a person who weighs at least 15 percent less than his or her normal body weight. Extreme weight loss and severe malnutrition in people with anorexia nervosa can cause significant health problems and, sometimes, even death.
The exact cause of this eating disorder is not known. Currently, the various factors that are considered as possible causes include genes, hormones and social attitudes promoting very thin body types. Many experts do not consider family conflicts as a cause of this or other eating disorders.
Some risk factors of anorexia nervosa are:
Most cases of anorexia begin during the teen years or young adulthood. The disorder is much more common in females, but it can affect males as well. It often affects white women, who are high academic achievers and are goal-oriented.
The disorder is treatable, but the major challenge while treating anorexia nervosa is making the person realise that she (or he) has an illness. Most people with anorexia nervosa do not accept the fact that they have an eating disorder. Many people start the treatment when their condition becomes serious due to extreme malnutrition. There are many types of treatments for anorexia. Treatment usually involves a combination of strategies. The doctor starts the treatment based on one’s age, overall health, duration of anorexia and other factors. Aim of the treatment is to treat the condition and any associated medical complication.