Evidence check: MY FOODBOOK in the context of Sport

The query asks for an evidence check on the MY FOODBOOK test in a sports context. The provided context contains no specific information about this product. In general, food sensitivity or intolerance tests (e.g., IgG-based) marketed to athletes lack robust evidence for improving performance or recovery. They measure immune reactions that do not necessarily correlate with symptoms or athletic outcomes. No validated cutoffs or sport-specific norms are available. The evidence grade is 'unclear' or 'marketing'. Athletes are better served by evidence-based approaches: sports nutrition counseling, validated biomarker testing (e.g., iron, vitamin D), and elimination diets guided by a professional. The test should not replace medical advice or be used for clinical decisions.