Most interesting. I was 11 when our dark-haired family MD went to serve in WW2. When he returned his hair was white.

I can agree because I knew it. Almost half of my hairs turned grey 3 times. It always occurred after significant stress which was 1995, 2005, 2012. However, I reject the general assumption that the change in natural hair color is permanent. Most of my hairs turned brown again after a few years without stress.

I will take a look up my nose, and see if I can work out what color my hair is these days.

So, if I grow mice hair on my head, and if I worry,,,,,,,,,,,,,I don't get it.

Wow! This runs counter to my experience. I have had extreme stress in my life, but the majority of my hair is still brown at the age of 66. I am gradually going gray in the same pattern as all the women in my family.