<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Longevity#Genetics" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Longevity#Genetics</a><p>Genetics
Twin studies have estimated that approximately 20-30% the variation in human lifespan can be related to genetics, with the rest due to individual behaviors and environmental factors which can be modified.<p>[Hjelmborg, J.; Skytthe, Axel; Vaupel, James W.; McGue, Matt; Koskenvuo, Markku; Kaprio, Jaakko; Pedersen, Nancy L.; Christensen, Kaare et al. (2006). &quot;Genetic influence on human lifespan and longevity&quot;. Human Genetics 119 (3): 312–321. doi:10.1007&#x2F;s00439-006-0144-y.]