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Eating Fish Oil With Mercury While Pregnant Can Lead to Infant Deafness, Blindness or Mental Retardation


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When a pregnant woman eats a fish-rich diet, the mercury content can reduce the beneficial effects fish oil has on her child's brain development. Babies exposed in the womb to higher methyl mercury levels scored lower on skills tests.

Of five nutrients tested, only the benefits of the fish oil DHA were affected by the mercury. The extent to which methyl mercury interferes with fish oil's brain benefits is uncertain.


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