Back to today’s briefing

Story perspectives

Slow Fingernail Growth: Key Indicator of Aging

2/17/2025

30 7

Summary

Story summary

Dr. David Sinclair, a leading genetics expert from Harvard, reveals that the rate of fingernail growth is a crucial marker of biological aging. After 30, nails grow 0.5% slower each year, hinting at the aging process. Notably, changes in nail appearance can also indicate health problems, from nutrient deficiencies to serious illnesses like cancer.

1 of 1

Story summary

Dr. David Sinclair, a leading genetics expert from Harvard, reveals that the rate of fingernail growth is a crucial marker of biological aging. After 30, nails grow 0.5% slower each year, hinting at the aging process. Notably, changes in nail appearance can also indicate health problems, from nutrient deficiencies to serious illnesses like cancer.