Myths vs facts: ADH1B and Haut

Myths vs. facts: ADH1B and skin. The ADH1B gene encodes alcohol dehydrogenase, which converts ethanol to acetaldehyde. Certain variants (e.g., rs1229984) cause faster conversion, leading to higher acetaldehyde levels after alcohol intake and a characteristic facial flushing – a well-documented but benign effect. Evidence: moderate human observational studies support the link between ADH1B variants and alcohol intolerance/flush. However, marketing often exaggerates claims that ADH1B testing can predict acne, premature skin aging, or rosacea. Robust studies for such skin conditions are lacking. Skin issues are multifactorial (hormones, diet, microbiome, UV exposure). A DNA test for ADH1B provides only a hint about alcohol metabolism, not skin health. Consumers should be wary of products branding ADH1B as a 'skin gene.' Evidence is moderate for flush, otherwise weak or marketing-driven.