Talent tests sold to parents, and what the research behind them actually supports.
Why this topic Youth sport genetic testing is marketed hard and regulated barely at all.
Counted in Europe PMC, where the title or abstract names both this topic and that rsID. The number is papers, not evidence of a cause.
ACTN3
Muscle fiber type ("sprinter gene")
26 papers →BDNF
Smoking behavior
5 papers →HFE
Iron overload risk (HFE H63D)
3 papers →ALDH2
Alcohol flush reaction
3 papers →GC
Vitamin D levels
2 papers →OPRM1
Opioid receptor sensitivity
1 paper →HFE
Iron overload risk (hereditary hemochromatosis)
1 paper →MTHFR
Folate metabolism (MTHFR A1298C)
1 paper →MTHFR
Folate metabolism (MTHFR C677T)
1 paper →CYP1A2
Caffeine metabolism
1 paper →Europe PMC, title and abstract only, searched for “elite athlete”, “sports performance”, “muscle strength”, “injury risk” alongside each published rsID. Full text was not counted: it returns every paper with an rsID buried in a supplementary table. Recounted monthly.