When pregnant mom eats fish, kids do better Study: Seafood can boost children's IQ, despite possible mercury exposure

Corbis Pregnant women who ate more?han two or three servings a week had smarter children with better developmental skills, researchers found.

LONDON - Women who eat seafood while pregnant may be boosting their children's IQ in the process, according to new research published Friday in The Lancet.

The results of the study were surprising, say the authors, and contradict American and British recommendations that pregnant women should limit seafood and fish consumption to avoid potentially high levels of mercury. The study relied on mothers' observations of their children's development and their reports of their food intake while pregnant.

Mercury is found in small concentrations in fish and seafood, but can accumulate in the body. High amounts of the metal can damage the human nervous system, particularly those in developing fetuses. On the other hand, seafood - including fish - is also a major source of omega-3 fatty acids, essential to brain development.

While experts believe further research is necessary to confirm these conclusions, the study's failure to find evidence of increased harm from eating fish is significant. Because seafood contain both nutrients and toxins, it remains a dilemma for regulatory authorities what kinds of recommendations should exist for pregnant women.

The study, led by Dr. Joseph Hibbeln of the United States' National Institutes of Health, tracked the eating habits of 11,875 pregnant women in Bristol, Britain.

Smarter kids?
At 32 weeks into their pregnancy, the women were asked to fill in a seafood consumption questionnaire. They were subsequently sent questionnaires four times during their pregnancy, and then up to eight years after the birth of their child. Researchers examined issues including the children's social and communication skills, their hand-eye coordination, and their IQ levels. As with any study based on self-reporting methods, however, the results cannot be considered entirely definitive.

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