RESEARCH - exposed in his gestation now obtain worse results ● Three reports show this effect in both rural and city
● At seven years, have five points less in tests of intellectual quotient
By Angel Diaz Now, by default, the worst results in tests that measure the intellectual quotient or other similar evidence, such as those which measure the memory or perceptual reasoning (not linguistic skills).
The three surveys, which are present in the journal Environmental Health Perspectives', are the first to follow for years children who were exposed in their pregnancy to toxic compounds of the pesticide. All they have coincided in highlighting the negative effects it can have on cognitive development of children.
The organophosphate insecticides such as chlorpyrifos or diazidón, are used routinely to protect crops, both in America as in other places in the world, Brazil included. In the U.S., moreover, have been widely used as household pesticides before 2001, when they were banned for this use. Residues in foods
The prenatal exposure in these children was recorded prior to such prohibition, but the contact with harmful substances can also be produced through the consumption of food crops which have been used organophosphate pesticide. "We suspect that the exhibition should be mainly to pesticide residue in food, but could also come from the environment and the houses of farmers," signals the ELMUNDO.es Dr. Brenda Eskenazi, head of research in rural areas, directed from the University of Berkeley. This
expert points out, however, the importance of vegetables and fruits to lead a healthy diet, so it warns that these results should not be interpreted as an excuse to exclude these foods from the diet. "It's very important not to limit the diet, especially in pregnant women. However, it should wash fruits and vegetables included when they have skin." If it is possible with a brush. "
The study by Eskenazi and her colleagues have focused on agricultural areas of Salinas (California) and has found traces of pesticides far higher, though always in the same rank, than those in New York, both studies conducted by the Mount Sinai Hospital and Mailman School of Public Health.
In the first study, we analyzed the prenatal exposure to pesticides of 329 children. At five years, so he saw a deterioration of cognitive development associated with these substances give: how many more tracks were recorded in the mother's urine, the worse the results would be obtained as an average. Now, the newly published study confirmed the same effect in an age that is now much more visible and more worryingly, the seven years. Less
score
Thus, an increase of 10 times more organophosphates found in the mother during pregnancy was statistically corresponds with a reduction of 5.5 points in tests that measure intelligence quotient intellectual age of seven. When compared to children who were more exposed to these particles with those who suffered less from such pollution, threw the first results from seven points down, where as average.
In New York, the study from the Mailman School, which has accompanied the 256 children also born before the ban, has found deficits in memory and intellectual quotient associated with traces of organophosphates in umbilical cord blood. Children who were at the rank of the top 25% of prenatal exposure, have seven years to an average of 5.5 points lower on tests of memory, and also a result of lower than normal, though less significant, as to general intelligence.
Finally, the Mount Sinai is obtained similar results in children six to nine years, as evidence of the Bayley scale, which measures the cognitive and psychomotor development. This study, moreover, there could be ascertained that this adverse effect only affects children whose mothers were genetically more susceptible to organophosphate (because they cost more harmful compounds metabolize). This result confirms that the statistical association provided answers to the cause: exposure to pesticides.
The authors also have noted, moreover, the coincidence between the three studies: "There are definite similarities between our findings which, taken together, demand a careful consideration [of the effects of the pesticide]," says Dr. Stephanie Engel, who has directed research at Mount Sinai.
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