We find below an account of a reasonable piece of research but the authors obviously did not like what they found. I gather that they are from a group of people opposed to pesticide use and they clearly wanted to say that pesticides fry the brains of kids.

But their data does not show that. The Abstract below concentrated on IQ at 12 months. Why? That is an absurdity. There is no way you can get a useful estimate of IQ at 12 months. About 4 years would be the minimum.

And since they had data from children at later ages, the whole thing begins to smell. I therefore read the full research report and discovered that the findings at the oldest age were described as “imprecise”. “Imprecise”? that is not a term usually found in statistical reporting. I can only assume that they mean “not statistically significant” In other words, the whole thing is a crock.

And here’s the amusing bit: For the white kids in the sample, having lots of pesticides in you made you SMARTER at 12 months!

Why did they bother reporting such sh*t? They have made a mockery of themselves and their cause. Stephanie the Angel is an angel of darkness, it would seem (“Engel” is German/Yiddish for Angel).

Prenatal Exposure to Organophosphates, Paraoxonase 1, and Cognitive Development in Childhood

By Stephanie M. Engel et al.


Background: Prenatal exposure to organophosphate pesticides has been shown to negatively impact child neurobehavioral development. Paraoxonase 1 (PON1) is a key enzyme in the metabolism of organophosphates.

Objective: To examine the relationship between biomarkers of organophosphate exposure, PON1, and cognitive development at ages 12 and 24 months, and 6 to 9 years.

Methods: The Mount Sinai Children’s Environmental Health Study enrolled a multiethnic prenatal population in New York City between 1998 and 2002 (n= 404). Third trimester maternal urines were collected and analyzed for organophosphate metabolites (n = 360). Prenatal maternal blood was analyzed for PON1 activity and genotype. Children returned for neurodevelopment assessments at ages 12 months (n = 200), 24 months (n = 276), 6 to 9 (n = 169) years.

Results: Prenatal total dialkylphosphate metabolite level was associated with a decrement in mental development at 12 months among blacks and Hispanics. These associations appeared to be enhanced among children of mothers who carried the PON1 Q192R QQ genotype, which imparts slow catalytic activity for chlorpyrifos oxon. In later childhood, increasing prenatal total dialkyl- and dimethylphosphate metabolites were associated with decrements in perceptual reasoning in the maternal PON1 Q192R QQ genotype, with a monotonic trend consistent with greater decrements with increasing prenatal exposure.

Conclusion: Our findings suggest that prenatal exposure to organophosphates negatively impacts cognitive development, particularly perceptual reasoning, with evidence of effects beginning at 12 months and continuing through early childhood. PON1 may be an important susceptibility factor for these deleterious effects.


Posted by John J. Ray (M.A.; Ph.D.). For a daily critique of Leftist activities, see DISSECTING LEFTISM. To keep up with attacks on free speech see TONGUE-TIED. Also, don’t forget your daily roundup of pro-environment but anti-Greenie news and commentary at GREENIE WATCH . Email me here

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