Help please! is an eating disorder some form of obsessive compulsive disorder?

Usually not: Eating disorders come in several forms, the most common being anorexia, bulimia, binge eating, and obesity. Although some individuals with one of these disorders have obsessive behaviors, no evidence suggests that the latter is the cause for the eating problems. Anxiety and depression also are quite common in individuals with eating disorders, but again probably not related to the cause.