Signs of Biological Aging
Hands on a blue and pink background
Credit: Pixabay
Chronological age and biological age are not always the same. Biological age reflects how well your cells and tissues are functioning. One visible indicator of this is nail growth rate. Dr. Sinclair pays close attention to whether his nails are growing more slowly and how recently he last trimmed them. He refers to a 1979 study in which researchers tracked fingernail growth in hundreds of people. They found that nail growth slows by about 0.5% per year after age 30. This suggests that faster-than-average nail growth may indicate slower biological aging.
