warum nehme ich nicht ab obwohl ich im kaloriendefizit bin — can a DNA test help?

Not losing weight despite a calorie deficit is frustrating and can stem from metabolic adaptation (your body lowers energy expenditure), inaccurate tracking, hidden calories, hormonal imbalances (thyroid, cortisol), or water retention. A DNA test offers limited help. The most studied genetic variant is FTO rs9939609: carriers of the risk allele have a slightly higher BMI (~0.4 kg/m² per allele), but the effect is modest and strongly modifiable by diet and exercise. Other genes like ARNTL or PPARG are linked to metabolism and satiety, but evidence is moderate to weak. A DNA test cannot explain why you personally are not losing weight; it only hints at a small genetic predisposition. The real drivers are lifestyle factors: accurate calorie tracking, sufficient protein, quality sleep, and physical activity. Before investing in genetic testing, rule out medical causes (e.g., hypothyroidism) with a doctor. DNA tests are not a weight-loss solution.