Lead Exposure May Have Limited Brain Development in Neanderthals, Study Finds
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gmays
7mo ago· 9 min readenNews
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Summary
A new study from UC San Diego researchers reveals that Neanderthals and other extinct hominids had high levels of lead exposure, which may have limited their brain and language development. Analysis of fossilized teeth shows significant lead contamination in Neanderthals, while modern humans appear to have been protected by a gene mutation that prevented lead from accumulating in the brain. This genetic advantage may explain why modern humans developed complex language capabilities while Neanderthals did not, despite similar lead exposure levels.
Key quotes
· 4 pulledUC San Diego researchers have found high levels of lead in the teeth of both Neanderthals and modern humans
However, a gene mutation may have protected modern human brains, allowing language to flourish
A new study suggests that exposure to lead may have limited brain and language development in Neanderthals
A gene mutation may have protected modern human brains
A new study suggests that exposure to lead may have limited brain and language development in Neanderthals, but a gene mutation may have protected modern human brains.
