Lay opinion vs evidence: Longevity Check

Lay opinion often claims that a DNA test can accurately predict your lifespan or aging rate. The evidence tells a different story: polygenic risk scores for longevity explain less than 5% of the variance and are highly ancestry-specific. No direct-to-consumer test has been proven to extend lifespan. The SNP rs2764264 is listed in a longevity GWAS database but is actually associated with brain volume, not directly with lifespan. Effect sizes are small, and lifestyle factors (diet, exercise, sleep, stress) have a much larger impact. A DNA test can at best provide weak, population-based hints, not an individual prognosis. For improving health, validated biomarkers (blood markers, body composition) and sustainable lifestyle changes are far more actionable. The risk of misinterpretation or undue worry from such tests is real. In summary: the evidence is primarily GWAS-based with low clinical relevance; lay opinion greatly overestimates the predictive power.