There are several types of eating disorders; anorexia nervosa, bulimia nervosa and binge eating disorder. You might think that they are a physical problem, since they cause a sufferer to look so thin, but in reality they are a mental health issue. This is because it is the sufferer’s mind or mental state that causes the perception that their body image is ugly and they are too fat, when they are not.
They then obey the mental urge to get rid of the food they just ate, or to exercise to the point of exhaustion so the calories burn off. Or in the case of binge eating without vomiting, they go on a session of binge eating and gain even more weight. Then the vicious cycle of guilt and eating goes on and on.
They cannot stop it or control it because of the changes to their brain that occur due to the mental aspect of the disease. They become totally preoccupied with thinking about their weight and shape of their body. One of the problems with eating disorders is that they don’t have a single cause that can be identified and removed. There are many varying causes, but just because a person experiences them doesn’t mean to say they will get the disease. So it also depends on a person’s personality as to whether they get the disorder.