What new twins study reveals about genes, environment and longevity

By Bradley Elliott, Reader in Ageing Physiology, University of Westminster

Why do some people live to 100 while their sibling dies decades earlier? Is it luck, lifestyle, or something written into their DNA?

Relative to many other species, humans are particularly long lived, but there is an ongoing argument about how much of our long lifespan is shaped by our genes and how much to our environment. It’s the old “nature versus nurture” debate.

Researchers have repeatedly used large population studies to estimate how much genetics influences longevity. Historically,…

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