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Tracking the effects of prenatal alcohol exposure through to 9 years of age
Date:8/15/2012

Although studies of alcohol's effects on fetal growth have consistently demonstrated deficits that persist through infancy, the data on long-term postnatal growth from human studies have been inconsistent. A new study of the effects of heavy prenatal alcohol exposure (PAE) on growth and body composition throughout childhood has found growth restrictions that persist through to nine years of age, as well as a delay in weight gain during infancy, both of which were exacerbated by iron deficiency.

Results will be published in the November 2012 issue of Alcoholism: Clinical & Experimental Research and are currently available at Early View.

"This study is the first to examine the effects of heavy PAE on growth in a single cohort over time using a more rigorous single statistical model with repeated measures for each outcome," said R. Colin Carter, an instructor of pediatrics at Harvard Medical School as well as corresponding author for the study. "Our research adds to prior findings of fetal alcohol-related growth restriction in childhood by demonstrating that the effects of alcohol exposure on somatic growth are largely determined in utero. In addition, this study is the first to examine the effects of PAE on percent body fat."

Carter and his colleagues recruited two groups of pregnant women at their initiation of prenatal care at an urban obstetrical clinic in Cape Town, South Africa: 85 heavy-drinking women, defined as two or more drinks/day or four or more drinks/occasion, and 63 abstaining and light-drinking women, defined as less than one drink/day and no binge drinking. The women were interviewed during their pregnancies about alcohol, smoking, drug use, and demographics. Their children had their length/height, weight, and head circumference measured at 6.5 and 12 months, and again at five and nine years of age.

"We found that children born to women who drank heavily during pregnancy had reductions in weight
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Contact: R. Colin Carter, M.D.
robertcolin.carter@childrens.harvard.edu
617-355-6624
Children's Hospital Boston

Alcoholism: Clinical & Experimental Research
Source:Eurekalert


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