Who Do Fingernails Grow?

Nails start in the nail root, hidden under the cuticle. When cells at the root of the nail grow, the new nail cells push out the old nail cells. These old cells flatten and harden, thanks to keratin, a protein made by these cells. The newly formed nail then slides along the nail bed, the flat surface under your nails.

What causes fingernails to grow quickly?

The nails on your dominant hand are said to grow faster simply because you use your dominant hand more. ... This influx of nutrients may speed up nail growth. The rate of growth also depends on which finger the nail is on. A 2007 study found that the fingernail on your little finger grow slower than other fingernails.

What is the purpose of fingernails?

The short answer is we have evolved to have nails because they help us pick things up (like food), pick things off (like bugs), and hold tightly onto things. Early humans who had these type of nails (instead of claws) tended to live long enough to have babies and pass on the fingernails gene to their kids.