Myths vs facts: WeightLoss | SLIM DNA-Test and Müdigkeit

The myth that a 'SLIM DNA test' can directly guide weight loss or explain fatigue persists. In reality, such tests examine common variants in genes like FTO, PPARG, or MC4R, which have very small effect sizes (often <1 kg body weight difference). Evidence comes mainly from GWAS, not from interventional trials proving that acting on these variants leads to weight loss. Fatigue is even more complex: it can stem from sleep disorders, stress, nutrition, thyroid issues, iron deficiency, and many other factors. A consumer DNA test cannot diagnose the cause of fatigue. MyBody-X explicitly states its tests are for lifestyle, not medical use. For genuine weight or fatigue concerns, a doctor's evaluation is essential. Bottom line: claims are exaggerated – evidence: marketing.