Do Redheads Feel More Pain?

The New York times reports that "A growing body of research shows that people with red hair need larger doses of anesthesia and often are resistant to local pain blockers like Novocaine." They're sensitive, but perhaps they'd not like to stay that way. "Researchers believe redheads are more sensitive to pain because of a mutation in a gene that affects hair color." I guess the doctors don't read Tom Robbins, else they'd know that red-heads are from alien seed.