Summary: A case is described of anorexia nervosa arising in a mentally-handicapped 35-year old person with Down's syndrome. The late onset is accounted for on the grounds that adolescent challenges had only recently arisen in this instance. Removal of the patient from the provocative situation, coupled with some effective psychotherapeutic ‘grief work’ with the family, was associated with restoration of normal body weight and menstrual function, following the patient's acceptance of the usual re-feeding treatment programme.