Longevity is the length of a person’s life, especially when they live a very long time. It can also mean how long something, like a product or idea, lasts or stays useful.
It comes from Latin “longaevitās,” from “longus” (long) and “aevum” (age or lifetime). English adopted it to talk about long life spans and lasting power.
People often chase the secret to longevity with diets, supplements, and routines, but strong social ties and basic habits like sleep and movement play huge roles. Some traditional communities reach old age in good health without ever using the word “longevity” at all.
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