The Body’s Repair Systems Become Less Effective
One of the most important reasons longevity becomes harder after 80 is that the body’s natural repair mechanisms slow down.
When you’re young, your body constantly repairs damaged cells, heals injuries, and replaces worn-out tissues. A scraped knee heals quickly. A broken bone often recovers completely. Infections are usually fought off efficiently.
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As people age, these repair systems gradually weaken.
Cellular Aging
Every day, billions of cells divide and replace older cells. Over time, cells accumulate damage from:
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