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Did Ancient Lead Exposure Change The Evolution Of The Human Brain?

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An international study has reshaped the understanding that exposure to the toxic metal lead is mainly a post-industrial occurrence. This research indicates that our human ancestors encountered lead periodically for over two million years, potentially influencing the evolution of hominid brains, behavior, and even language development.

The study also provides insights into how humans may have outcompeted Neanderthals. It was found that brain organoid models with Neanderthal genetics were more vulnerable to lead’s effects than human brains, suggesting greater harm from lead exposure to Neanderthals.

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Source: https://www.ancientpages.com/2025/10/20/did-ancient-lead-exposure-change-the-evolution-of-the-human-brain/



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