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Adapting to the cold gave us the migrants

A genetic variation that had helped early humans adapt to cold weather can contribute to migraine headaches in some populations today, according to a new study.

Migraines are a weakening neurological disorder that affects millions of people worldwide.

The proportion of people suffering from the disease varies between human populations, but is greatest in individuals of European descent, which is also the population with the highest rate of the cold adaptive variant, mentioned the study.

findings published in the journal PLOS Genetics suggest that adaptation to cold temperatures in early human populations may have contributed to some extent to the variation in migraine prevalence existing among human groups today.

"This study shows how early evolutionary pressures can affect today's phenotypes," says co-author Felix Key of

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