Scientists Found the Biggest Factor in How Long You’ll Live. There’s Not Much You Can Do About It.
Yahoo News Canada • • health
Key Points:
- New research from the Weizmann Institute of Science suggests genetics may determine about 50-55% of human lifespan, roughly double previous estimates that emphasized environmental factors.
- Researchers analyzed twin studies and sibling data, using mathematical models and simulations to separate intrinsic genetic influences from extrinsic causes like accidents and infections.
- The study found that as extrinsic mortality decreases and older age groups are considered, genetic heritability of lifespan becomes more apparent, validated by data from Scandinavian twins and U.S. centenarian siblings.
- These findings could shift aging research toward identifying specific genetic variants that govern longevity, potentially advancing understanding of the biological mechanisms behind human aging.
- While genetics play a significant role, lifestyle, healthcare, socioeconomic factors, and random biological events still contribute to mortality and lifespan variability.