a 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% annually 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.

Other Health Signs Revealed Through Your Nails

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