David Sinclair· PhD
"Around the same time thay my gray hair started growing, for the fist time I started experiencing hot flashes. This happened in early September this year. Shortly after, I turned 48. After about 2-3 months of graying, hot flashes, and no period, all 3 markers of aging stopped. I have recently plucked several hairs that are dark around the root and gray beyond. The sudden aging happened during a tough time my son was having (which caused me great worry) and seemingly went away once he started feeling better."