Effect of an Eating Disorder on Glycemic Control in Diabetes

Eating habits can have a substantial impact on type 2 diabetes (T2D) patients. In this study, the effect of a comorbid eating disorder on glycemic control was examined in a cohort of T2D patients. T2D patients were evaluated using a Structured Clinical Interview for DSM-IV and the Binge Eating Scale. Glycemic control was analyzed with fasting blood glucose and glycated hemoglobin levels (A1c). Body mass index (BMI) and lipids were also considered. Final analysis included 70 consecutive patients, of whom 77% (n = 54) were female; half of the total cohort was obese. In total, 14 patients had an eating disorder, the most common of which was binge eating disorder. A regression analysis found that the presence of an eating disorder predicted both fasting blood glucose (beta coefficient = 47.4 [22.3]; P=0.037) and A1c (beta coefficient = 1.12 [0.57]; P=0.05). The study authors concluded that in T2D patients, co-morbid eating disorder presence is correlated with poorer glycemic control in patients with a higher BMI. The authors further noted, “The presence of an eating disordered behavior in patients with [T2D] seems to have clinical relevance in the usual care of patients with diabetes. Therefore, we recommend eating psychopathology should be routinely assessed in [T2D] patients.”