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Gestational weight gain generally does not influence child cognitive development
Date:2/28/2012

A child's cognitive development is not generally impacted by how much weight his or her mother gained during pregnancy, according to a study from Nationwide Children's Hospital. This is the first study to use methods controlling for the widest range of confounding factors when directly examining the association between gestational weight gain and childhood cognition.

Insufficient or excessive weight gain in pregnancy can have negative consequences for fetuses and children including infant mortality. The Institute of Medicine recently revised gestational weight gain guidelines, recommending that women gain weight within specific weight gain ranges for their Body Mass Index category. Yet little is known about the association between extremes of gestational weight gain and child cognition.

"One challenge for studies examining gestational weight gain and child outcomes is separating the effect of gestational weight gain from confounders," said Sarah A. Keim, PhD, principal investigator in the Center for Biobehavioral Health at The Research Institute at Nationwide Children's Hospital. "Confounders such as maternal intelligence, whether the family environment promotes cognitive development, family diet and exercise and some genetic factors can influence neurodevelopment postnatal and also gestational weight gain."

To address these gaps in data, Dr. Keim led a study to assess the association between gestational weight gain and the cognitive performance of children at 4 and 7 years of age. The study appears in the International Journal of Epidemiology.

Using data from the U.S. Collaborative Perinatal Project, Dr. Keim's team employed two statistical approaches. The more traditional approach adjusted for factors like the mother's weight before pregnancy, her race and the baby's sex. The other used a fixed-effects approach to control for all potential confounding factors that are shared among siblings, such as a propo
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Contact: Erin Pope
Erin.Pope@NationwideChildrens.org
614-355-0495
Nationwide Children's Hospital
Source:Eurekalert

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