Eating disorders and insulin-dependent diabetes mellitus (IDDM): relationships with glycaemic control and somatic complications

This study was designed to assess (by means of a diagnostic interview based on DSM-III-R criteria) the prevalence of eating disorders in 69 insulin-dependent diabetic (IDDM) out-patients, and the relationship with somatic risks. We found no cases of anorexia nervosa or bulimia nervosa, current or lifetime, in male patients with IDDM. No female patients with IDDM had anorexia, and 4.8% had current and lifetime bulimia. Eating disorders not otherwise specified (bulimic type) were significantly more frequent in women than in men (lifetime incidence 43% vs. 21%; current incidence 33% vs. 5%), and generally occurred after the onset of IDDM. Self-reports of bulimic behaviours according to the Bulimic Investigatory Test of Edinburgh (BITE) were associated with high levels of glycosylated haemoglobin. There was no association between eating disorders (current or lifetime), with somatic complications being more likely to be explained by a long duration of illness and impaired glycaemic control.