Do Loneliness and Social Isolation Predict Mortality Because of Hazardous Drinking?

Introduction: Subjective feelings of loneliness and objective social isolation have been consistently connected with ill-health and mortality, though little work has empirically examined the mechanisms explaining the adverse effects. This study examines whether alcohol consumption explains the connection of loneliness and social isolation on mortality in different age and gender groups. Methods: The sample comprised a representative 1994 Finnish sample (n = 8,650) matched with 22-year follow-up mortality data. A multigroup path analysis with discrete survival time analyses was conducted. Results: There were unique differences in the associations between loneliness, social isolation, alcohol consumption, and mortality based on age and gender groups. Loneliness and particularly social isolation predicted mortality partly through subjective intoxication for women under 40 and men 40–65. Discussion: Loneliness and social isolation are associated with mortality, partly through subjective intoxication. Interventions targeted at reducing loneliness and social isolation may help address underlying causes of excess alcohol consumption and mortality.