some kid in california developed some serious cardiomyopathy and they didn't know why. I think he eventually died and when they did the autopsy they found heavy traces of mercury in his heart tissue. When you get metals in your heart tissue they disrupt the "vital" flow of electricity throughout the heart to make it pump right. The kid was some kind high school athlete and they found that he had gone to a diet inspired by some bodybuilders where he ate nothing but cans of tuna all day. There simply is no other way this kid could have been exposed to those levels of mercury. Beleive the EPA, cause if you talk to sushi owners.....like legitimate "japanese" owners of a sushi restaurant, they will tell you they are very hesitant about tuna caught off the coast of the U.S. I personally had this discussion with the owner of a place I went to all the time in frisco. He even showed me a slab of maguro (raw tuna) that he caught after inspection and he put up to the light and you could see tiny little shiny things in the blood rivulets. Than he showed me a comparative slab that was caught in japan. So I don't care even what the EPA or anybody else say's, I saw it with my own two eyes. Case closed for me. I still eat tuna, but not like I used to.