I examined the short-term effectiveness of a 12-Step, inpatient program incorporated into a multimodal approach to the treatment of eating disorders, and the differences among individuals with different types of eating disorders. Results showed that at the 6-month follow-up, all individuals were within the pathological range on all subscales of the EDI-2 instrument. No statistically significant differences were found between the groups on any of the demographic characteristics. Fourteen of the 42 subjects (33.3%) identified themselves as abstinent or devoid of undesirable eating behaviors at the 6-month time period, with 23.8% identified as being at least “somewhat” in relapse.