New Research Reveals How Humans Could Live Up to 156 Years
Summary
A new study created a mathematical model showing humans could live up to about 156 years if all aging processes except DNA damage in body cells were stopped. The research found that damage in brain and heart cells, which cannot repair themselves, limits human lifespan even if other aging effects are reversed.Key Facts
- The study used a model to test how long humans could live without various aging processes.
- Somatic mutations are DNA changes in non-reproductive cells that cannot be passed to children and cannot currently be reversed.
- Brain and heart cells do not divide or renew, so damage accumulates and limits lifespan.
- Organs like the liver can repair by creating new cells, so they are less affected by these mutations.
- The model estimates a maximum human median lifespan of about 156 years based on somatic mutations alone.
- Removing all other aging processes but keeping somatic mutations raises lifespan from current limits but only to that ceiling.
- The study explains why diseases like dementia and heart failure affect organs that cannot regenerate.
- Researchers say this work helps clarify why humans cannot live indefinitely and highlights the importance of DNA damage in aging.
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