The Link Between Neanderthal DNA and Depression Risk
Modern humans originated in Africa, and started spreading around the world about 60,000 years ago. As they entered Asia and Europe, they encountered other groups of ancient humans that had already settled in these regions, such as Neanderthals. And sometimes, when these groups met, they had sex. We know about these prehistoric liaisons because they left permanent marks on our genome. Even though Neanderthals are now extinct...
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