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Study Finds Little Proof Between Binge Drinking and Birth Defects

by VR Sreeraman on  November 14, 2007 at 5:39 PM Research News   - G J E 4
Study Finds Little Proof Between Binge Drinking and Birth Defects
A new study has found a little substantive evidence that binge drinking while pregnant seriously harms the developing foetus. Heavy drinking throughout pregnancy has been consistently linked to birth defects and subsequent neurological problems.
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However, it is not known what impact binge drinking, in the absence of regular heavy drinking, might have. Researchers said that this drinking pattern is becoming increasingly common, particularly among women. The results are based on a comprehensive review of published research on binge drinking and women who were either pregnant or trying to conceive.

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Binge drinking was taken to mean downing five or more alcoholic drinks in one go, equivalent to 60 g of alcohol or 7.5 units. The period under review spanned 35 years from 1970 to 2005, and unearthed more than 3500 articles, which were narrowed down to 14 pieces of relevant research.

The authors observed some methodological flaws in the 14 studies, although they were all assessed as being of good quality. The findings indicated that there was little substantive evidence that binge drinking caused a range of problems, including miscarriage, stillbirth, abnormal birth weight or birth defects, such as foetal alcohol syndrome.

However, there was some suggestion that it might impair normal neurodevelopment, although the effects were generally quite small, the authors said. These included "disinhibited behaviour," reduced verbal IQ, an increased tendency towards delinquent behaviour, learning problems and poorer academic performance. For example, they point out that the timing of binge drinking might be important, and that there may be more impact during the first 13 weeks of pregnancy.

"This systematic review found no convincing evidence of adverse effects of prenatal binge drinking, except possibly on neurodevelopmental outcomes," the authors said. They suggested that further research is required, but in the meantime it might be wise to advise women to avoid binge drinking during pregnancy, just in case.

"When pregnant women report isolated episodes of binge drinking in the absence of a consistently high daily alcohol intake, as is often the case, it is important to avoid inducing unnecessary anxiety, as, at present, the evidence of risk seems minimal," they said.

The study is published in the Journal of Epidemiology and Community Health.

Source: ANI
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