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Genetics account for 55% of lifespan differences, a major increase from prior estimates, according to a new study.
A new study in Science finds genetics influence human lifespan more than previously thought, accounting for about 55% of longevity variation, up from earlier estimates of 10% to 25%.
Researchers reanalyzed twin and sibling data from Denmark, Sweden, and the U.S., distinguishing deaths from internal aging processes versus external causes like accidents or infections.
As extrinsic mortality has declined due to modern medicine, genetic factors have become more apparent.
The findings suggest genetics play a major role in healthy aging, potentially accelerating research into gene-based therapies, though lifestyle choices remain important for longevity.
La genética explica el 55% de las diferencias en la esperanza de vida, un gran aumento con respecto a las estimaciones anteriores, según un nuevo estudio.