Tag: Hair
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Why do brunettes find it harder to quit?
The Tweet: “Brunettes are more susceptible to nicotine addiction.” Dark haired smokers are more likely to become addicted to nicotine, according toresearch from Penn State University. The scientists noticed a relationship between melanin and levels of nicotine dependence. Melanin is the pigment found in hair and skin that is responsible for giving brunettes their dark…
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Red hair doesn’t explain differences in pain
The Tweet: “Redheads don’t feel pain like everyone else does. They are less sensitive to electrically induced pain, but more sensitive to thermal pain.” Sensitivity to pain has been linked to the gene responsible for red hair colour and pale skin in humans. Melanocortin-1 receptor (MC1R) genes determine the level of the brown skin pigment melanin.…