Redheads Probably Not Up for Some S&M

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Debra Messing: Redhead with great teeth. Photo: Getty Images

Redheads feel pain more than the rest of the population, or so a new study by the Journal of the American Dental Association says. The scarlet-locked folks (and we mean au naturel, not from a box) tend to be resistant to numbing drugs like Novocaine and need larger doses of anesthesia because of a genetic mutation that affects both hair color and sensitivity to pain. This makes our teeth hurt just thinking about it. People with black or brown hair also get the mutation, although it's less common. Well then, the myth is true: Blondes do have more fun. At least at the dentist's office. [Well/NYT]