Lead Poisoning in Humans
Lead has been poisoning humans for over 2 million years, with its toxic effects potentially rewiring early human brains and influencing the fate of the Neanderthals.
Research suggests that exposure to lead is not a new issue, but rather a longstanding problem that has been present throughout human history.
Lead’s influence is so pervasive that it may have affected the evolution of human brains, behavior, and even our language.
A study published in Science Advances found that humans and their hominid ancestors have struggled with lead for over two million years, with the ability to withstand its impacts potentially contributing to the survival of Homo sapiens over the Neanderthals.
Author's summary: Lead exposure has affected humans for millions of years, influencing brain evolution and behavior.