Profiles of mental health correlates of alcohol and illicit drug use in the Canadian population: an exploration of the J-Curve hypothesis.

Objective: Alcohol and (or) illicit drug use (AIDU) problems are associated with mental health difficulties, but low-to-moderate alcohol consumption may have mental health benefits, compared with abstinence. Our study aimed to explore the hypothesis of a nonlinear, or J-curve, relation between AIDU profiles and psychological distress, psychiatric disorders, and mental health service use in the […]