constipation and depression

Patients with idiopathic constipation who seek medical attention in tertiary centers generally have a higher prevalence of anxiety, depression and social dysfunction than do normal controls.

Cheng, C. & Chan, A. O. O. (2003) Coping strategies, illness perception, anxiety and depression of patients with idiopathic constipation: a population‐based study. Alimentary Pharmacology and Therapeutics, 18(3). doi.org/10.1046/j.1365-2036.2003.01663.x