Why do we age — and can science slow it?
Aging is not one biological clock. It is a network involving DNA damage, cellular senescence, mitochondrial dysfunction, inflammation, epigenetic change and declining repair.
Longevity research is now testing which parts of that network can actually be changed.
https://www.nexthorizon.space/2026/09/why-do-we-age-science-of-aging-and.html
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