specific study conducted in 1979 in which scientists observed the growth rate of hundreds of people’s fingernails. What they found was that the participant’s fingernail growth rate slowed down by 0.5% annuallyf
from the age of 30 onwards. This suggested that if your nails grow faster than this anticipated rate, then you are aging at a slower rate than average.
Demographics
Other Health Signs Revealed Through Your Nails

Your nails can reveal more than your biological age, though. There are several health conditions that change the appearance of your