That suggests current tests for the risks of diseases of aging are incomplete, as they do not take into account these longevity-associated genes that may override that risk.
If the people of 60 or above account for 10% of the population, it is considered an aging society. The people of 60 or above account for more than 11% of our population.
Apart from the shedding of pigment due to theaging of adhesive, there is a series of complicated photochemical reactions that can account for the fading of color.