Eating disorders are serious but treatable mental and physical illnesses that can affect people of all genders, ages, races, religions, ethnicities, sexual orientations, body shapes, and weights. National surveys estimate that 20 million women and 10 million men in America will have an eating disorder at some point in their lives.

While no one knows for sure what causes eating disorders, a growing consensus suggests that it is a range of biological, psychological, and sociocultural factors.