In an interview Friday with The Associated Press, FDA Commissioner Margaret Hamburg said the agency doesn't plan to require mercury labels on seafood, as some consumer groups have sought.
Instead, Hamburg says, the FDA will soon update its guidance on mercury levels in different seafood and what that means.
Fish is part of a heart-healthy diet. But it also can absorb mercury, a neurotoxin, from streams and oceans.
The FDA has long warned that pregnant women, those who may become pregnant, and young children avoid certain types of fish because of concern that too much could harm developing brains. That advice has left consumers wondering what's best to eat.