What Your Nails May Reveal About Longevity, According to Experts

Fingernails as a Clue to Health

Fingernails can offer small but useful hints about your body’s overall condition. Made of keratin, their growth rate and quality often reflect metabolism, circulation, and cellular activity.

Faster growth is common in younger, healthier systems, while slower growth can come with aging, stress, or illness. Experts see nails as a general indicator—not a diagnosis—of how well the body is maintaining balance and regeneration.