A toxic form of mercury has found its way into all seafood in varying amounts. Here are the popular fish and shellfish ...

(Learn how mercury gets into fish.) Though the agencies say consumers should seek out fish that are low in mercury, almost all seafood contains the toxin in varying amounts, and getting too much ...

Therefore, most adults should eat tuna in moderation and consider choosing other fish that is relatively low in mercury. When buying tuna, opt for skipjack or canned light varieties, which do not ...