Getting more of the 'sunshine vitamin' in less time than it takes blondes and brunettes means health benefits, since vitamin D is responsible calcium absorption in the gut.
13 surprising things you didn't know about redheads
Molly Ringwald, whose red hair in '80s films like The Breakfast Club was iconic, is actually a natural brunette.
The 'hyper-sexual' stereotype is wrapped up in religion.
Experts attribute this to virile, less melanin, which means they burn faster - but they also make vitamin D faster. They sense hot and cold redheaded Vikings hundreds of years.