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·January 7, 2025·6 min read

Lead Pollution Linked to IQ Decline in Roman-Era Europe

A study analyzing Arctic ice cores reveals that lead pollution during the Roman Empire's height contributed to an estimated 2-3 point IQ decline across Europe. The pollution stemmed from silver mining and smelting, which released vast amounts of lead into the atmosphere.

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·August 30, 2023·5 min read

Marijuana Users Found to Have Elevated Lead Levels

Researchers found marijuana users have significantly higher levels of metals like lead and cadmium in their blood and urine. The study, which is one of the largest of its kind, analyzed data from over 7,000 participants in the National Health and Nutrition Examination Survey.

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·January 23, 2019·7 min read

Childhood Lead Exposure Linked to Poor Adult Mental Health

A new study reveals lead exposure during childhood can significantly impact mental health and personality traits later in life. Researchers found exposure to leaded gasoline prior to the 1990s was linked to increased psychiatric symptoms experienced by adults.

Autism Featured Open Neuroscience Articles Psychology

·June 1, 2017·5 min read

Baby Teeth Link Autism and Heavy Metals

According to researchers, the baby teeth of children with autism contain higher concentrations of toxic lead, and less manganese and zinc that children who are not on the spectrum.

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·July 1, 2016·6 min read

A Host of Common Chemicals Endanger Child Brain Development, Report Says

A new report calls for renewed attention to the growing evidence that many common and widely available chemicals endanger neurodevelopment in fetuses and children of all ages.

The image shows a person's arm with a bandage after having blood taken.

Featured Psychology

·June 30, 2014·3 min read

Lead in Kids’ Blood Linked With Behavioral and Emotional Problems

A new study reports emotional and behavioral problems can occur with even low exposure to lead. Additionally, as the levels of lead increase in the blood, so do the problems.