Tags: pesticide | adhd | risk

Common Pesticide Increases ADHD Risk

By    |   Thursday, 29 January 2015 04:07 PM

A commonly used pesticide has been found to increase the risk of attention deficit hyperactivity disorder in children.
 
A new Rutgers University-led study exposure to the pyrethroid pesticide deltamethrin may alter the development of the brain's dopamine system — responsible for emotional expression and cognitive function.
 
The research, published in the Journal of the Federation of American Societies for Experimental Biology (FASEB), involved mice that were exposed to the pesticide in utero and through lactation. After exposure, the mice displayed several features of ADHD, including dysfunctional dopamine signaling in the brain, hyperactivity, working memory problems, attention deficits, and impulsive-like behavior.
 
"Although we can't change genetic susceptibility to ADHD, there may be modifiable environmental factors, including exposures to pesticides that we should be examining in more detail," said lead researcher Jason Richardson, associate professor in the Department and Environmental and Occupational Medicine at Rutgers Robert Wood Johnson Medical School and a member of the Environmental and Occupational Health Sciences Institute.
 
ADHD most often affects children, with an estimated 11 percent of kids — about 6.4 million — diagnosed as of 2011. Boys are three to four times more likely to be diagnosed than girls. While early symptoms — including an inability to sit still, pay attention, and follow directions — begin between the ages of 3 to 6, diagnosis is usually made after the child starts attending school full time.
 
There is strong scientific evidence that genetics plays a role in the disorder, but no specific gene has been found that causes ADHD and scientists believe that environmental factors may also contribute to the development of the behavioral condition.
 
Richardson noted young children and pregnant women may be more susceptible to pesticide exposure because their bodies do not metabolize the chemicals as quickly. As a result, human studies need to be conducted to determine how exposure affects the developing fetus and young children.
 
"We need to make sure these pesticides are being used correctly and not unduly expose those who may be at a higher risk," Richardson said.

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A common pesticide has been found to increase the risk of attention deficit hyperactivity disorder in children.
pesticide, adhd, risk
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2015-07-29
Thursday, 29 January 2015 04:07 PM
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