Venkatesh Rao@vgrI have like 3x more grey hair on the right side of my head than left. I think hair graying is some sort of decentralized system.mentalfloss.com10 Head-Scratching Facts About Gray HairWhether it’s no big deal or a perplexing affront to your vanity, gray hair is a fact of life—and still a bit of a mystery.6:23 AM · Jul 21, 20185 Likes