Objective: To determine the influence of body mass index (BMI) on cognition in euthymic bipolar patients and healthy matched controls in a post hoc study of 2 cross-sectional and longitudinal exploratory studies.
Method: A total sample of 121 individuals was examined, which included 52 euthymic bipolar disorder I or II patients (DSM-IV-TR criteria) and 69 healthy controls matched by age and gender, categorized in 2 subgroups in terms of body mass index (BMI-factor): normal weight (BMI: 18.5-24.