Myths vs facts: Fitness Vitality DNA and Sport

Myths vs. facts: Fitness Vitality DNA and Sport. Many companies claim that a DNA test can predict your ideal training or nutrition for athletic performance. The reality: most genetic variants tested (e.g., in ACTN3, PPARA, or FTO) have small effects on endurance, strength, or metabolism. Evidence comes mainly from GWAS with modest effect sizes; single SNPs often explain less than 1% of performance variance. Training, diet, recovery, and motivation are far more important. Another myth is that DNA-based supplements can compensate for genetic disadvantages – there are no robust clinical trials supporting this. Most 'fitness DNA' tests lack proper validation and rely on overinterpreted associations. Safety note: do not change your training or supplement regimen based solely on DNA results without medical supervision. A holistic approach with realistic expectations is more effective. The evidence for personalized sport recommendations from DNA tests is currently best described as 'marketing'.