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Fish oil no help for mother's mood, baby's development

Source: Thomson Reuters Foundation - Wed, 20 Oct 2010 05:39 GMT
Author: (c) Copyright Thomson Reuters 2010. Click For Restrictions. http://about.reuters.com/fulllegal.asp
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NEW YORK, Oct 20 (Reuters Life!) - Women taking fish oil capsules during pregnancy are not more likely to stave off postpartum depression nor boost the mental development of their babies, according to an Australian study.

But they may help reduce their chances of giving birth too early and the only side effect they are likely to suffer from taking fish oil is increased belching, according to the study published in the Journal of the American Medical Association.

Researchers from the Women&${esc.hash}39;s and Children&${esc.hash}39;s Hospital in North Adelaide set out to test the effects of daily supplements of docosahexaenoic acid (DHA), which earlier studies have hinted might improve pregnancy outcomes.

They looked at more than 2,000 Australian women who received either vegetable oil or fish oil containing DHA during the second half of their pregnancy -- a key time for fetal brain growth.

The pills used in the study contained 800 milligrams of DHA and 100 milligrams of another so-called omega-3 fatty acid as well. DHA is a building block of cell membranes and is especially important in brain development.

"Before DHA supplementation in pregnancy becomes widespread, it is important to know not only if there are benefits, but also of any risks for either the mother or child," said researcher Maria Makrides in a statement.

The good news: the only side effect was belching, which was almost twice as common in women eating fish oil as in those on vegetable oil.

The bad news: fish oil didn&${esc.hash}39;t do much to help avoid depression, with both groups hovering around 10 percent in self-reported high levels of depressive symptoms.

What&${esc.hash}39;s more, when psychologists evaluated toddlers at 18 months they found no differences in babbling, verbal comprehension and other language development, nor in cognitive measures such as exploring objects and forming concepts.

The researchers did find that women taking fish oil cut their risk of giving birth before 34 weeks of pregnancy, from more than 2 percent to just about one percent. A normal pregnancy lasts 40 weeks.

On the other hand, they also increased their chances of going past their due date.

(Reporting by Frederik Joelving at Reuters Health; editing by Elaine Lies)

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