Pregnant women should not eat canned tuna because it may contain harmful levels of mercury, Consumer Reports magazine said on Monday, taking a more cautious approach than that recommended by the U.S. government.
Government tests found instances where canned light tuna had as much mercury, a potentially harmful heavy metal, as white tuna, also known as albacore, according to the magazine's latest issue.
High levels of mercury in the bloodstream may harm developing nervous systems, according to the Food and Drug Administration. Fish and shellfish are the main sources of mercury exposure for humans.