ADHD and Pesticides

More evidence has come about that links pesticide exposure with ADHD. The study, published in Environmental Health Perspectives, adds to evidence that organophosphatepesticides can affect the human brain. Researchers at the University of California Berkeley tested pregnant women for evidence that organophosphate pesticides had actually been absorbed by their bodies, and then followed their children as they grew. Women with more chemical traces of the pesticides in their urine while pregnant had children more likely to have symptoms of attention deficit hyperactivity disorder, or ADHD, at age 5, the researchers found.

Organophosphates are designed to attack the nervous systems of bugs by affecting message-carrying chemicals called neurotransmitters including acetylcholine, which is important to human brain development.

The researchers tested Mexican-American women living in the Salinas Valley of California, an area of intensive agriculture. They looked for breakdown products or metabolites from pesticides in urine samples from the mothers during pregnancy and from their children as they grew. A tenfold increase in pesticide metabolites in the mother’s urine correlated to a 500 percent increase in the chances of ADHD symptoms by age 5, with the trend stronger in boys.

In May a different team found children with high levels of organophosphate traces in the urine were almost twice as likely to develop ADHD as those with undetectable levels.

There are about 40 organophosphate pesticides such as malathion registered in the United States. Studies have also linked exposure to Parkinson’s, an incurable brain disease.

From a naturopathic perspectives, there are tests that can be performed to evaluate levels of organophosphates. This is not only important for children with ADHD, but also patients with any underlying neurological disease, as well as cancer. If identified, treatment protocols to facilitate pesticide detoxification (using natural substances) can be utilized.