Evidence check: Fitness Vitality DNA in the context of Fruchtbarkeit

The MyBody-X Fitness Vitality DNA test analyzes genetic variants linked to fitness, energy, and vitality. In the context of fertility, there is no direct, clinically validated predictive power. The genes examined (e.g., FTO, PPARA) have small effect sizes and are more relevant to general metabolism and inflammation, which may indirectly affect reproductive health. Evidence is mostly mechanistic or from GWAS associations, not from randomized controlled trials on fertility. Lifestyle factors (diet, exercise, stress) dominate fertility outcomes. The test may serve as a motivator for healthier habits but not as a diagnostic tool for fertility issues. Caution is warranted against overblown marketing claims: no DNA test can currently reliably predict or improve individual fertility.