There are no confirmed cases of methylmercury toxicity in the United States from consumption of commercial seafood. The amount of mercury equated with serious illness has only been seen in international industrial accidents and poisonings several decades ago. The levels present in those instances are on a scale dramatically different than the levels seen in commercial seafood, which fall well below FDA limits. Meanwhile, it is estimated that low omega-3 (seafood) consumption is responsible for 84,000 deaths each year in the U.S.
