20 Laws About How Our Bodies Work

YOUR HAIR CAN TURN GREY OVERNIGHT

Can suffering emotional trauma turn every hair on your head white overnight? This is yet another widespread myth that isn’t quite true.

It would be almost impossible for all of our hairs to turn grey in just a few hours, even if you have just suffered the most traumatic shock of your entire life.

What is possible, however, is losing all your hair—apart from the grey ones! In cases of serious emotional trauma, the grey hairs are the only ones robust enough to remain on your head. Looking at yourself in the mirror, you might think that your hair has turned grey in an instant, whereas in fact what has happened is that all your non-grey hair has fallen out!