Parents, dont blame your children anymore for low test scores. According to American research, lesser grades in children are linked to the time of their conception-which unfortunately they cant help.
Announcing results of a first-time study, Dr. Paul Winchester of Indiana University School of Medicine claimed that children conceived from May through August were bound to perform worse than their peers in examinations.
The researchers linked standardized test scores of 1,667,391 Indiana students in grades 3 through 10 with the month in which each student had been conceived. The report presented at the Pediatric Academic Societies' annual meeting, showed that regardless of race, gender, and grade level, children conceived from May through August scored significantly lower on math and language tests- than children conceived during other months of the year.
According to the scientists, lower test scores were found to correlate with higher levels of pesticides and nitrates in the surface water (nearby streams and other bodies of water) during that same time period. Pesticides and nitrates are used on crops and lawns in the warmer months, and they could have an effect on the earliest development of fetal brains, postulates Winchester.
"Exposure to pesticides and nitrates can alter the hormonal milieu of the pregnant mother and the developing fetal brain, says Winchester. He quoted previous studies linking exposure to pesticides and nitrates to low thyroid hormone levels ("hypothyroidism") in pregnant women. Hypothyroidism in pregnancy incidentally, has been tied to lower intelligence test scores in offspring.
While the current findings do not prove that pesticides and nitrates contribute to lower test scores, "they strongly support such a hypothesis," Winchester says.
"A priori there should be no reasons particularly why the month of conception should change your (test) scores. Yet from our chain of evidence our hPage: 1 2 Related medicine news :1
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