Evidence check: ADH1B in the context of Abnehmen

Evidence for ADH1B in the context of weight loss is indirect and moderate. ADH1B encodes alcohol dehydrogenase, which metabolizes ethanol to acetaldehyde. The common variant rs1229984 (ADH1B*2) causes faster conversion, leading to facial flushing, nausea, and discomfort in many carriers. This typically reduces alcohol intake. Since alcohol is calorie-dense (7 kcal/g) and impairs fat oxidation, lower consumption may indirectly support weight loss. Human studies show that carriers of the fast variant drink less alcohol on average and have fewer alcohol-related problems. However, direct studies linking ADH1B variants to weight loss or BMI are scarce. Effects are population-dependent (e.g., common in East Asians). MyBody-X tests can analyze ADH1B, but interpretation should be cautious: the genetic predisposition influences drinking behavior, not metabolism directly. Marketing claims labeling ADH1B a 'slimming gene' are overblown. Safety note: individuals with the fast variant should avoid alcohol because acetaldehyde is toxic and increases cancer risk. Evidence: human-moderate.