Babies Are Larger After Ban on 2 Pesticides, Study FindsBy RICHARD PÉREZ-PEÑA
Published: March 22, 2004
Pregnant women in upper Manhattan who were heavily exposed to two common insecticides had smaller babies than their neighbors, but recent restrictions on the two substances quickly lowered exposure and increased babies' size, according to a study being published today.
The researchers, led by a team from Columbia University, looked at babies born to women living in Harlem and Washington Heights, and divided them into four groups, based on the amounts of the pesticides chlorpyrifos and diazinon found in the mothers' blood and umbilical-cord blood. In the group with the highest levels, babies were, on average, 6.6 ounces lighter and one-third of an inch shorter than those in the group with no measurable amount of the insecticides in the blood.
The authors write that theirs is the first reported study to show a link between umbilical-cord levels of these two pesticides and newborn size. The researchers added that it was also the first to document an improvement in birth size from curtailing use of a pesticide.
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