Alcohol and depression are not a simple “alcohol causes depression” story: across 185 references and 3,711 original studies, the evidence separates moderate-use signals from the consistent harms of heavy drinking, AUD, coping-motivated use, suicidality, relapse, and mortality. The full ☸️SAIMSARA evidence map gives a reference-linked view of where causality remains uncertain, which mechanisms matter clinically, and why integrated screening and treatment are needed instead of treating alcohol and depression as separate problems.
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Abstract: To synthesize current evidence regarding alcohol and depression. The review uses 185 references and builds its evidence map from 3711 original studies with 966200087 total participants/sample observations (topic-deduplicated ΣN). This scoping review indicates that the alcohol–depression relationship is pattern-dependent and bidirectional rather than uniformly linear, with heavy drinking, AUD, and alcohol-related consequences consistently linked to depression and worse prognosis, while moderate use sometimes shows lower depression risk in curvilinear analyses. The most recurrent signal supports coping-motivated drinking, shame, and emotion dysregulation as proximal mechanisms connecting depressive symptoms to alcohol misuse, with comorbidity carrying substantial mortality and suicidality burden. Mendelian randomization evidence remains mixed, so causal direction cannot be assumed from observational associations alone. Clinically, this supports routine dual screening and integrated treatment pathways that address both conditions together. Future work should prioritize harmonized exposure metrics and longitudinal, mechanism-integrated cohorts to clarify which patients benefit most from depression-focused, alcohol-focused, or integrated care.
Keywords: Alcohol use; Depression; Alcohol dependence; Alcohol misuse; Heavy drinking; Comorbidity; Suicidal ideation; Coping motives; Adolescent alcohol use; Mental health
Review Stats
Final search date and database lock: 2026-05-15 21:15:02 CEST
Plan: Pro (expanded craft tokens; source: PubMed)
Source: PubMed
Total Abstracts/Papers: 18862
Downloaded Abstracts/Papers: 4900
Included original and non-original Abstracts/Papers (all): 4017
Included original Abstracts/Papers (Vote counting by direction of effect): 3711
Reference Index (links used in paper): 185
Total participants/sample observations (topic deduplicated ΣN): 966200087
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