Pesticide link to ADHD

It’s correlation, not causation

A common pesticide and metabolites have been linked in a large study to ADHD, an attention deficit disorder characterized also by hyperactivity and impulsivity. ADHD has previously been associated with specific genes and even hailed as a one-time advantageous evolutionary adaptation. But many neurological differences likely will trace to an interaction of genes and environment, or, in fancy science talk, a multifactorial causality.

But it’s also not a surprise

This study looked at metabolites in the urine of more than 1000 children, 119 of whom had ADHD. It’s not mechanistically outre to think that pesticides designed to send a pest’s nervous system astray might have a similar effect on vertebrate systems. But this study showed links, not mechanisms, which often is a necessary first step to justify further pursuing a hypothesis. The researchers found that levels of specific metabolites of organophosphate pesticides are associated with an increased risk–by as much as two-fold–of developing ADHD.

Join the ever-expanding club

If further research does identify a mechanistic tie to this identified correlation, then these pesticides will join an ever-growing suite of chemicals we’ve introduced into the environment that influence our endocrine and neural systems. These chemicals are called endocrine disruptors.

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About ejwillingham
Sciwriter/editor/autism-ADHD parent. SciMaven @ http://doublexscience.blogspot.com/. I speak my pieces @ http://daisymayfattypants.blogspot.com/ & @ http://thebiologyfiles.blogspot.com/

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