Genes Hold a Stronger Grip on Lifespan Than Previously Thought
TL;DR
A large twin-based analysis from the Weizmann Institute estimates that about 55% of the variation in human lifespan is genetic—far higher than prior 6–25% figures—after separating intrinsic aging from extrinsic death causes and studying twins and siblings raised apart. The finding, published in Science (2026), suggests genetics has a major role in aging and will spur ongoing searches for longevity genes using modern datasets.
- We Were Wrong About How Much Your Genes Shape Your Lifespan ScienceAlert
- Genes May Control Your Longevity, However Healthily You Live The New York Times
- Your genes matter more for lifespan now than they did a century ago – here’s why The Conversation
- Lifespan may be 50% heritable, study suggests Live Science
- Rethinking longevity: Genes account for 50% of human lifespan variation, study suggests Medical Xpress
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