In a study of 4,000 pregnant women, fish accounted for only 7 percent of blood mercury levels.
October 2, 2013 Since most fish contain some amount of mercury, public health officials suggest that pregnant women limit their intake to 12 ounces a week. But fresh research suggests current recommendations may be too cautious, and that fish may not be a huge source of mercury for expecting moms. Still, some doctors remain cautious.
If you eat fish, rather than take a fish-oil supplement, is there more likely to be a benefit? There's more than a suggestion that this is indeed the case.
Verena J Matthew/iStockphoto
September 26, 2013 Contrary to earlier studies, new research suggests that omega-3 fatty acids may not stave off cognitive decline. We look at why this is hard to pin down — and examine the body of evidence that finds supplements may not be as effective as eating fish meals in protecting brain health.
NPR thanks our sponsors
Become an NPR sponsor