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Redhead effects medicine

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    Natural-born redheads have a biology unlike any other. Thanks to one genetic mutation and a few other mysterious causes, redheads have different pain tolerances, sexual encounters, and risks for disease than any other person with a different hair color. It was only in that scientists identified the gene responsible for red hair — the melanocortin 1 receptor MC1R protein. Current estimates put that number between one and two percent of the global population.
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    8 Ways Having Red Hair Affects A Person's Health, From Pain To Sex

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    Anesthetic Requirement is Increased in Redheads

    Nobody likes going to the dentist, but redheads may have good reason. 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. As a result, redheads tend to be particularly nervous about dental procedures and are twice as likely to avoid going to the dentist as people with other hair colors, according to new research published in The Journal of the American Dental Association. Researchers believe redheads are more sensitive to pain because of a mutation in a gene that affects hair color.
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    The Pain of Being a Redhead

    Long before the study of genetics, the rarity of red hair led to the creation of magical and wildly imaginative explanations. Ancient Greeks decided their Thracian neighbours were especially warmongering and bloodthirsty because they were flame-haired. At some point in history a dichotomy of sorts emerges: men with red hair were up to no good, with several notable paintings depicting Judas with red hair, for example, while during the reign of Elizabeth I, women fell over themselves in their efforts to dye their hair the same colour as the queen. Science eventually intervened, although it was only in that scientists identified the gene responsible for red hair; the melanocortin 1 receptor MC1R protein.
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    Background: Age and body temperature alter inhalational anesthetic requirement; however, no human genotype is associated with inhalational anesthetic requirement. There is an anecdotal impression that anesthetic requirement is increased in redheads. Furthermore, red hair results from distinct mutations of the melanocortin-1 receptor. We thus tested the hypothesis that the requirement for the volatile anesthetic desflurane is greater in natural redhead than in dark-haired women.
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