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Are redheads more sensitive to pain?

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Another surprising factor is that hair color may reflect pain tolerance. In 2009, researchers reported in the Journal of the American Dental Association showed that redheads were more sensitive to pain and may need more anesthesia for dental procedures. read more

In other respects, however, redheads turn out to be tougher than other people. Research has produced evidence that redheads are less sensitive to stinging pain in the skin. This was shown in tests where capsaicin, the active substance in chilli, was injected into the skin to produce pain. read more

Researchers believe redheads are more sensitive to pain because of a mutation in a gene that affects hair color. In people with brown, black and blond hair, the gene, for the melanocortin-1 receptor, produces melanin. read more

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Source: weird-facts.org