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Drinking During Pregnancy Linked To Offspring's Risk Of Alcohol Disorders In Early Adulthood

Date:
September 5, 2006
Source:
JAMA and Archives Journals
Summary:
Individuals whose mothers drink three or more glasses of alcohol at any one occasion in early pregnancy have an increased risk of developing alcohol disorders by 21 years of age, according to a report in the September issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

Individuals whose mothers drink three or more glasses of alcohol at any one occasion in early pregnancy have an increased risk of developing alcohol disorders by 21 years of age, according to a report in the September issue of Archives of General Psychiatry, one of the JAMA/Archives journals.

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Exposure to maternal drinking during early childhood has been associated with difficulties in thinking, learning and memory, as well as mental and behavioral problems. However, few studies have examined the link between drinking during pregnancy and a child's later risk for alcohol dependence and other disorders, according to background information in the article. Animal studies have provided extensive evidence of a link between exposure to alcohol before birth and early acceptance of alcohol.

"Similar results replicated in human studies would carry considerable implications for public health intervention," the authors write. "First, such studies would suggest that even small quantities of alcohol exposure, if consumed in a single session, may cause in utero neurodevelopmental changes that in turn may lead to the early onset of alcohol disorder in youth. Second, they would provide support for the role of a biological origin of alcohol disorders."

Rosa Alati, Ph.D., from The University of Queensland, Herston, Australia, and colleagues explored whether maternal exposure to alcohol during pregnancy increased a child's risk of developing alcohol disorders in 2,138 participants who were followed from birth to age 21. A group of 7,223 mothers was originally interviewed at their first prenatal physician visit, between 1981 and 1984 in Brisbane, Australia. The mothers and children were assessed at birth and again 6 months and 5, 14, and 21 years later. Before pregnancy, in early (first 18 weeks) and late (last three months) pregnancy, and when their children were age 5 and 14, the mothers were asked how often they drank alcohol and the number of drinks consumed on any one occasion. Children were evaluated for alcohol disorders at age 21.

Of the 2,555 children who completed an assessment at 21 years, 640 (25 percent) met criteria for a diagnosis of alcohol disorder; 333 (13 percent) of those reported developing the disorder before age 18 and 307 (12 percent) between age 18 and 21. In the final analysis, which included 2,138 individuals, those whose mothers drank more than three glasses of alcohol on any one occasion during early pregnancy were 2.47 times as likely to develop an early-onset (before age 18) alcohol disorder and 2.04 times as likely to develop a late-onset (between ages 18 and 21) alcohol disorder. Drinking during other stages of pregnancy, including late pregnancy, also increased risk. These associations remained strong after the researchers considered other biological and environmental factors that may contribute to the risk of developing alcohol disorders.

Interactions between genetic factors and exposure to alcohol before birth may affect the development of the nervous system in ways that predispose children and adults to alcohol problems, the authors write. "Our findings support a biological contribution to the origin of alcohol disorders and suggest that greater attention should be given to the role of the programming effect of in utero alcohol exposure to the development of alcohol disorders in adulthood," they conclude.

This study was supported in part by the National Health and Medical Research Council (NHMRC), Queensland Health, Queensland Treasury, the Centre for Accident Research and Road Safety--Queensland, the Australian Institute of Criminology, the Telstra Foundation, a NHMRC Public Health Fellowship grant and a NHMRC Capacity Building grant.



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The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Cite This Page:

JAMA and Archives Journals. "Drinking During Pregnancy Linked To Offspring's Risk Of Alcohol Disorders In Early Adulthood." ScienceDaily. ScienceDaily, 5 September 2006. <www.sciencedaily.com/releases/2006/09/060904160530.htm>.
JAMA and Archives Journals. (2006, September 5). Drinking During Pregnancy Linked To Offspring's Risk Of Alcohol Disorders In Early Adulthood. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2006/09/060904160530.htm
JAMA and Archives Journals. "Drinking During Pregnancy Linked To Offspring's Risk Of Alcohol Disorders In Early Adulthood." ScienceDaily. www.sciencedaily.com/releases/2006/09/060904160530.htm (accessed October 25, 2014).

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