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Home / World / Historical Analysis Shows Roman Empire Contributed to Cognitive Decline with Lead Emissions

Historical Analysis Shows Roman Empire Contributed to Cognitive Decline with Lead Emissions

Historical Analysis Shows Roman Empire Contributed to Cognitive Decline with Lead Emissions
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World January 7, 2025 15:00

nevada, arctic, roman empire - A recent study reveals that the Roman Empire's massive lead emissions between 15 BC and 180 AD may have caused a decline in cognitive abilities among its population.

Researchers from the Desert Research Institute in Nevada analyzed ice cores from the Arctic to determine historical lead concentrations in the atmosphere. They discovered that the Romans emitted over half a million tons of lead into the air during the Pax Romana period.

Utilizing atmospheric models and modern studies on the effects of lead poisoning, the researchers estimated that lead levels in children's blood during the peak of the Roman Empire could have increased by 2.4 micrograms per deciliter, resulting in a decrease of 2.5 to 3 IQ points.

While the individual impact may seem limited, widespread lead exposure over nearly 180 years could have had significant consequences for the entire population. Some scholars even believe that lead poisoning contributed to the ultimate downfall of the Roman Empire.

Following the collapse of the Roman Empire, lead pollution remained an issue, with a new peak during the Industrial Revolution. It wasn't until the late 20th century that lead levels were dramatically reduced, for instance, through the banning of leaded fuels.

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