Leaded gasoline linked to millions of mental disorders in the U.S.
More than 150 million psychiatric diagnoses in the U.S. may be linked to leaded gasoline, which was commonly used for refuelling cars over several decades, according to new research. Scientists have demonstrated how lead can affect brain function.
The results of the new study published in the scientific journal "The Journal of Child Psychology and Psychiatry" indicate that approximately 151 million mental disorder diagnoses in the United States can be attributed to the lead present in gasoline.
Researchers compared blood lead levels with historical data on leaded gasoline use, which allowed them to estimate the impact of lead on children's mental health from 1940 to 2015.
Although leaded gasoline was phased out in the U.S. in 1996, its effects remain evident today. Dr. Aaron Reuben, a neuropsychologist, stresses that millions of Americans may be experiencing impaired cognitive function due to prolonged exposure to lead. Studies suggest that lead may contribute to the development of depression, ADHD, and can also influence personality, making individuals less conscientious and more neurotic.
Not just emissions
New research also reveals other sources of lead exposure, such as children's clothing, everyday household items, and even food products. High concentrations of lead in these items can lead to serious health problems, including fertility disorders and premature births. Children are particularly vulnerable to the harmful effects of these toxins, heightening the concern.
Dr. Bruce Lanphear, a specialist in lead poisoning, notes that while the studies were conducted thoroughly, not all potential sources of lead exposure were considered, which might mean the issue is underestimated. Symptoms of lead poisoning include headaches, abdominal pain, nausea, and in severe cases, can result in kidney failure and nervous system damage.
As CNN highlights, leaded gasoline was used since the 1920s, and its phase-out began in the 1980s. Nevertheless, lead is still present in some airplanes and agricultural equipment, underscoring the need for ongoing action to protect public health.
