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Nailed It: What Your Fingernails Say About Your Lifespan

November 6, 2025 4:30 pm in by

A Handy Clue to Ageing

A subtle clue about your body’s internal clock might be right at your fingertips. Recent research highlighted by longevity expert David Sinclair suggests the speed at which your fingernails sprout may reflect how well your cells are keeping up with the years.

Growing Older, Growing Slower

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Studies show that nail growth peaks in your 20s and then declines by about 0.5 % each year from around age 25–30. Over a lifetime, it can drop by roughly half. So, if you’re still trimming your nails more often than your mates, it might be a small sign your body’s still firing on all cylinders.

What Slower Nails Might Mean

A sluggish nail rate can hint at reduced blood flow, nutrient delivery, or cellular regeneration, which are usually tied to ageing. But don’t panic if your nails aren’t racing ahead; this isn’t a life-or-death measure, just a quirky biological whisper.

Bottom Line

So next time you grab the clippers, take a moment to appreciate those little keratin calendars, and they might be quietly keeping tabs on your inner youth.

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