How long you live may depend much more on your genes than scientists thought
Heritability of human lifespan roughly doubles to about 50% when extrinsic mortality is removed, showing a stronger genetic influence on intrinsic aging.
Estimation and mapping of the missing heritability of human phenotypes - Nature
Most human traits are heritable and polygenic; common SNPs explain about 9% of phenotypic variance on average, while GWAS-detected variants explain substantially less.
