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Detailed explanation-1: -FDA guidelines say pregnant women can eat canned tuna in limited quantities. “While canned tuna, especially light varieties, has relatively low average levels of mercury, individual cans can sometimes have much higher levels, ” Consumer Reports said.

Detailed explanation-2: -Canned tuna generally has lower levels of mercury than tuna fillets because smaller tuna species are used and the tuna are generally younger when caught.

Detailed explanation-3: -We reached out to all the companies in our tests and also heard from the National Fisheries Institute (NFI), a trade association that represents canned tuna manufacturers. NFI said that the mercury levels we found were well below the limit that the FDA allows in canned tuna and said these products are safe to consume.

Detailed explanation-4: -Some sources say eating more than a serving of tuna each week may put you at risk. However, other sources say that you would need to eat at least three cans of tuna a day for 6 months to risk mercury toxicity.