If pregnant, avoid tuna
11 December 2014. Given recent evidence of the total mercury exposure from tuna and the wealth of studies on brain toxicity due to methylmercury, the Danish Food Agency has changed the advisory regarding fish intake, which now advises pregnant women against eating canned white tuna and albacore as well as tuna steaks and any meals based on large carnivorous fish, such as pike, perch, walleye, halibut, swordfish, escolar, skate and shark. This advisory also regards women who plan to become pregnant, those who breastfeed, and children aged 3-14 years. One can of small tuna (jackfish) per week is acceptable, though not for children aged up to 3 years.
The U.S.Consumer Reports disagrees with the recommendations from the FDA and EPA on how much tuna women and children may eat. The CS don’t think pregnant women should eat any. They also believe the agencies do not do enough to guide consumers to the best low-mercury seafood choices. If you check the advisories of other countries, you will find the situation quite similar. Here’s the link the the CS story: