Is ADH1B useful for weight loss?

ADH1B encodes an enzyme involved in alcohol metabolism. Certain variants (e.g., rs1229984) cause faster conversion of ethanol to acetaldehyde, leading to flushing and lower alcohol intake. Reduced alcohol consumption can theoretically decrease calorie intake and aid weight management. However, no direct, high-quality evidence supports ADH1B as a useful tool for weight loss. The evidence is indirect and mechanistic. Effect sizes on body weight are small and confounded by lifestyle and diet. A consumer DNA test for ADH1B alone does not provide actionable weight-loss guidance. Clinical utility is unclear. Be cautious of marketing claims that overinterpret this association as a 'fat-burning gene'.