Overeaters Anonymous OA is a twelve step support group for individuals suffereing from eating disorders such as Bulimia, Anorexia,and Binge Eating Disorder (BED). Our primary purpose is to abstain from compulsive behavior with food and to carry the message of recovery to those who still suffer. There is no requirement for membership other than the desire to stop eating compulsively. OA is self-supporting through contributions from its members.