Women with red hair required 19% more desflurane anesthesia than women with dark hair.
Women with red hair had more sexual partners and had more sexual encounters than typical women.
Redheads have about a 1.5x increased risk of developing skin cancer compared to those with other hair colors.
Researchers looked at gingers and other animals with auburn feathers and fur to learn more about the effects of pheomelanin on health.
Left-handedness seems to be more common in redheads. Recessive genes cause each of these traits, and they tend to occur in pairs.
Among the many characteristics of redheads is the fact that their hair never turns gray. Their hair will only ever become white or blonde, never gray.
Those without red hair have about 140,000 hair strands, while those with red hair have only 90,000.
Bees are more attracted to people with red hair. This is just one of the peculiar characteristics of redheads.