This 2009 study assessed liver function biomarkers among heavy drinkers, moderate drinkers, and abstainers. Results indicated that heavy drinkers exhibited significantly elevated levels of serum gamma-glutamyltransferase (GGT), aspartate aminotransferase (AST), alanine aminotransferase (ALT), ferritin, and albumin compared to moderate drinkers and abstainers (P < 0.001 for all comparisons). The highest
