Causes

The exact cause of eating disorders is unknown. As with other mental illnesses, there may be many causes, such as:

• Genetics and biology. Certain people may have genes that increase their risk of developing eating disorders. Biological factors, such as changes in brain chemicals, may play a role in eating disorders.
• Psychological and emotional health. People with eating disorders may have psychological and emotional problems that contribute to the disorder. They may have low self-esteem, perfectionism, impulsive behavior and troubled relationships.