Redheads require up to 20% more anesthesia to be knocked out.
112
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
A man's beard grows fastest when he anticipates sex.
239
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
Only 2% of the worlds population is blonde.
15
The technical term for a cat’s hairball is a “bezoar.”
117
Human hair and fingernails continue to grow after death.
7
Intelligent people have more zinc and copper in their hair.
233