The Role of Micronutrients in the Pathogenesis of Alcohol-Related Liver Disease.
Level 3 - non-randomized controlled study
Systematic review of predominantly observational and non-randomized studies
PubMed 34491307 · doi:10.1093/alcalc/agab060
What was done
A systematic integrative review searched MEDLINE (1950–2021) for human or animal studies examining whether micronutrient deficiencies accelerate alcohol-related liver injury. Studies focused specifically on alcoholic hepatitis were excluded. Findings across identified studies were extracted and synthesized narratively.
What was found
The review evaluated 46 studies investigating selenium (n = 12, including one systematic review), folic acid or related B vitamins (n = 9), vitamin D (n = 9), magnesium (n = 8), and zinc (n = 8). Observational data indicated a potential association between magnesium deficiency and accelerated liver injury, whereas evidence for other micronutrients was weak or negative. The abstract reports no quantitative effect estimates or pooled numerical figures.
Why it matters
While malnutrition frequently co-occurs with alcohol use disorder and chronic liver disease, current literature does not support routine micronutrient supplementation to prevent disease progression, except to correct clinically verified magnesium deficiency.
Limits
The synthesis relies heavily on heterogeneous observational and animal research without meta-analytic pooling. Studies on alcoholic hepatitis were excluded, and no prospective cohort data establishing causal relationships between specific micronutrient deficits and liver disease progression were identified.
Cited by
- supports Between 30% and 50% of people with alcohol use disorder have low zinc status.