Did lead poisoning doom Neanderthals?: Modern humans' tolerance for the toxic metal may have helped them outcompete our closest evolutionary cousins.

The article explores a hypothesis regarding the survival of modern humans (Homo sapiens) compared to extinct relatives like Neanderthals and Denisovans, suggesting that superior social communication may have stemmed from better protection against lead toxicity in the brain. A study indicates that lead exposure was common among ancient hominins, potentially impairing their social complexity, while modern humans evolved genetic defenses that allowed for more complex societal structures. Researchers conducted experiments with brain organoids to demonstrate that lead exposure affected the development of archaic brain variants differently than modern human variants, supporting the idea that natural lead exposure may have influenced human evolution. However, some experts express skepticism about the study's conclusions, citing limitations in the evidence and methodology. [Extracted from the article]