Is MY FOODBOOK useful for Sport?

Based on the provided context, there is no direct evidence evaluating 'MY FOODBOOK' for sports. The context discusses MyBody-X DNA tests (e.g., TCF7L2, APOE) and microbiome tests, but not a specific product named MY FOODBOOK. Such personalized nutrition tools often combine genetic or microbiome data with dietary advice, but their utility for athletic performance remains poorly validated. Single-gene effects are modest; lifestyle factors like training, sleep, and overall diet are far more impactful. Continuous glucose monitors or blood biomarkers offer more actionable, real-time feedback. MY FOODBOOK may provide general guidance, but it should not replace evidence-based sports nutrition. Be cautious of marketing claims. Evidence: unclear (no direct sources in context).