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04 October 2013

Maternal smoking may lead to bipolar disorder

A study among American women who smoked during pregnancy suggests that children may be at increased risk to develop bipolar disorder.

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Adult children of mothers who smoked during pregnancy may be at increased risk for developing bipolar disorder, a new study suggests.

Bipolar disorder is a serious mental illness that causes extreme mood swings. Symptoms of the condition typically become noticeable in the late teens or early adulthood.

Researchers looked at 79 people with bipolar disorder and 654 people without the condition who were born between 1959 and 1966. People born to mothers who smoked during pregnancy had a twofold increased risk of developing bipolar disorder.

This is believed to be the first study to suggest an association between exposure to tobacco smoke in the womb and bipolar disorder.

The findings were published in the American Journal of Psychiatry.

Low birth weight

While the new study found an association between maternal smoking and higher risk of bipolar disease in young adults, it did not establish a cause-and-effect relationship.

Previous research has shown that smoking during pregnancy contributes to a number of problems in children, including low birth weight and attention problems.

These new findings "underscore the value of ongoing public health education on the potentially debilitating, and largely preventable, consequences that smoking may have on children over time," said study senior author Dr Alan Brown, a professor of clinical psychiatry and epidemiology at the New York State Psychiatric Institute and the Columbia University.

A previous study by Dr Brown and his colleagues found that the flu virus in pregnant women was associated with a quadruple increased risk that their child would develop bipolar disorder.

More information

The US National Institute of Mental Health has more about bipolar disorder.

Copyright © 2016 HealthDay. All rights reserved.

 
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