What percentage of lifespan is determined by genes?

Genes account for over 55% of the differences in lifespan, according to new research.

Can lifestyle choices change my genetically determined lifespan?

Yes, lifestyle choices like diet and exercise can shift your genetically influenced age by approximately five years.

Is there a maximum limit to how long humans can live?

Scientists suggest there may be a biological limit to human longevity, possibly around 122 years, the oldest recorded age.

Home / Health / Genes Hold Key to Longevity, Study Finds

Genes Hold Key to Longevity, Study Finds

30 Jan

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Summary

Genes account for over half of lifespan differences.
Lifestyle choices can shift genetically influenced age by five years.
Maximum human lifespan may be limited to around 122 years.

Genes Hold Key to Longevity, Study Finds

New research published in the journal Science indicates that genetics significantly influences how long individuals live. The study suggests that genes account for more than half of the variations in lifespan, a figure much higher than prior estimates. Previous research underestimated genetic influence due to data from periods with higher mortality from infectious diseases and accidents.

While genetics sets a substantial portion of our lifespan potential, lifestyle decisions such as diet, exercise, and social connections can still impact it. These choices may shift a person's genetically influenced age by up to five years. However, healthy habits cannot extend a lifespan significantly beyond the genetically predetermined limit.

Scientists also note a potential upper limit to human longevity, with the oldest recorded age being 122 years. Efforts to extend this maximum lifespan beyond current bounds may require drastic and potentially dangerous measures. The research highlights the complex interplay between nature and nurture in determining life expectancy.