Risks and limits of FTO Senioren

The MyBody-X DNA test for seniors analyzes the FTO gene, which is associated with obesity and weight regulation. However, the risks and limits are significant: the identified variants (e.g., rs9939609) have only a small effect on BMI (about 0.4 kg/m² per risk allele) and explain only a fraction of weight differences. The test cannot diagnose any condition, prescribe a personalized diet, or rule out metabolic diseases. For seniors, there is a risk of fatalism (“I have the risk gene, so I can’t change anything”) or unnecessary worry. The evidence is based on GWAS associations, not on randomized trials showing efficacy of gene-based nutrition in older adults. Lifestyle factors (exercise, calorie balance, sleep) are far more important. The test is a lifestyle product, not a medical diagnostic. Medical consultation is advised.