Myths vs facts: Fitness | LifestyleCheck and weight loss

The claim that DNA tests like the Fitness & LifestyleCheck can tell you whether to eat low-carb or low-fat for weight loss is a myth. Strong evidence from randomized controlled trials (POINTS, PMID: 37813841) and a 2024 FTO meta-analysis (PMID: 38474735) shows no benefit from genotype-matched diets. Professional guidelines (PMID: 40079117) advise against these tests. Genetic effects are small and easily overridden by lifestyle factors like adherence and overall calorie balance. The fact is: sustainable weight loss depends on a balanced diet, calorie deficit, and physical activity – not your DNA. Safety note: Do not rely on such tests for dietary decisions; consult a registered dietitian instead.