Redhead biological differences









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Most read articles Mar. Endorphins have several functions, but one of their primary roles is to provide pain relief. A study published in the Annals of Neurology looked at more than , people over 16 years and found those with red hair had a risk unlike those with dark hair. They also tend to retain their pigment longer and typically have thicker hair than other people. When humans migrated out of Africa tens of thousands of years ago, their skin lightened over time because they were exposed to less sun, according to the BBC. Some studies indicate that redheads are more prone to illness because they prefer to keep out of the sun and so lack vitamin D, or because their ability to absorb the vitamin is less efficient. Because the MC1R gene belongs to the same family of genes that play a role in pain, the mutation causes redheads to be more sensitive to it.

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Scientists Unravel Complexities Of What Gives People Red Hair

They react less to pressure close to the injected area, or to a pinprick. Might as well be human unicorns It was only in that scientists identified the gene responsible for red hair — the melanocortin 1 receptor MC1R protein. The same MC1R mutation that turns their hair red also releases a hormone in the brain that has the ability to mimic endorphins. A persistent rumour has also circulated about surgeons being reluctant to perform surgery on redheads because they are said to bleed more. But this myth was recently exploded by a recent study, which showed that redheads are no different to anyone else in this respect. Scientists are gradually piecing together a picture which seems to indicate that redheads are constituted differently to other people. 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.

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Natural red hair a complex trait

Scientists are gradually piecing together a picture which seems to indicate that redheads are constituted differently to other people. Capsaicin produces the same burning sensation in the skin as it does in the mouth when a hot chilli sauce is eaten. The same mutation that makes their hair red is also what causes them to be more sensitive to temperature changes — even slight ones. When humans migrated out of Africa tens of thousands of years ago, their skin lightened over time because they were exposed to less sun, according to the BBC. Endorphins have several functions, but one of their primary roles is to provide pain relief.

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Description: Under normal circumstances, when there is no mutation, the gene will bind and protect the skin from developing cancer cells. When humans migrated out of Africa tens of thousands of years ago, their skin lightened over time because they were exposed to less sun, according to the BBC. Endorphins have several functions, but one of their primary roles is to provide pain relief. External links Lars Arendt-Nielsen's profile. Redheads feel a different kind of pain March 3, - In the northern hemisphere the figure is 6 percent and in Scotland 13 percent. It is estimated that 2 percent of the world's population is redheaded. Or that she must be insensitive when she doesn't seem to mind ferociously hot curry sauce that sets your mouth on fire. Redheads need 20 percent more anesthesia than their dark-headed counterparts. They do know, however, why redheads are at an increased risk for melanoma, the deadliest form of skin cancer.
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