Leaded petrol's toxic legacy: 150 million US psychiatric cases linked
More than 150 million psychiatric diagnoses in the United States may be linked to leaded petrol, which was commonly used for refuelling cars for several decades, according to new research. Scientists have demonstrated how lead affects our brains.
The results of the new study published in the scientific journal "The Journal of Child Psychology and Psychiatry" indicate that about 151 million mental disorder diagnoses in the United States can be attributed to the lead found in petrol.
Researchers compared blood lead levels with historical data on leaded petrol, allowing them to estimate the impact of lead on children's mental health from 1940 to 2015.
Although leaded petrol was phased out in the United States in 1996, its effects are still visible today. Dr Aaron Reuben, a neuropsychologist, emphasises 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 also affect personality by making people 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. The 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 toxins, making this issue even more alarming.
Dr Bruce Lanphear, a lead poisoning specialist, notes that while the studies were conducted meticulously, not all possible sources of lead exposure were considered, which may mean the problem is underestimated. Symptoms of lead poisoning include headaches, abdominal pain, nausea, and in severe cases, can lead to kidney failure and nervous system damage.
As CNN reminds us, leaded petrol was used since the 1920s, and its phasing out began in the 1980s. Nevertheless, lead is still present in some airplanes and agricultural equipment, highlighting the need for further action to protect public health.
