Categories: NewsYear 2011April

Pesticides reduce the IQ of children

The American magazine Environmental Health Perspectives has published the 22 April, the work of three studies that link all the exposure of pregnant women pesticide and the reduction of the QI of their child. Studies have been conducted for more than ten years and have concerned 1000 women and their children.

Two studies were conducted in New York while the third was carried out in the rural population of California.

At New York's Mount Sinai Hospital and the University of Berkeley in California of similar methods were used to carry out the studies. They focused on pesticides phosphates (organophosphates) and have based their analyses on residues in the urine of pregnant women. The Berkeley researchers discovered that “chaque fois qu’on multiplie par dix la quantité d’organophosphates, during a pregnancy, the IQ drop 5,5 points en moyenne chez les enfants de sept ans”. Les chercheurs du Mount Sinaï affirment également que “l’exposition aux organophosphates a des conséquences négatives” sur les capacités sensorielles à résoudre des problèmes chez les enfants entre six et neuf ans.

These differences persist even when differences in education, the income of households and other chemicals were discarded. Les scientifiques californiens précisent qu’There may be a gap of 7 points between the most vulnerable children and the less exposed to pesticides.

The study at Columbia University has conducted analyses on organophosphate called chlorpyrifos whom waste was collected from the umbilical cord. This pesticide was used against insect pests until his ban indoor en 2001 in the United States and in 2009 in Europe. It is however still used in agriculture. The researchers found that for the 25% most exposed to this pesticide mothers, intellectual and memory of children abilities were respectively reduced 2,7 and 5,5 points.

Virginia Rauh, responsible for the study, déclare que “ces pertes du fonctionnement cognitif à sept ans pourraient avoir des conséquences sur les résultats scolaires” et ajoute que “les problèmes de mémoire pourraient gêner la compréhension d’un texte écrit et l’acquisition des apprentissages académiques même si l’intelligence reste dans la moyenne”.

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  • AFP
F. Boyat

View Comments

  • C'est évident...
    Ce n'est pas normal que je ne sois pas super intelligent...
    En plus j'ai l'impressio nde regresser de jours en jours...
    Faut dire que depuis mon entrée à l'université... C'est Sandwich au thon + Coca tout les jours ou presque... Our stores offer nothing. Et je deteste le restaurant universitaire plus chere... And not good (Fried).
    Inadmissible...

    (Rouen Univ Mont saint aignan).

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