Hate to burst your bubbles but Mercury contamination is VERY real. My friend worked on a boat and ate a small tuna steak every night. He started feeling week and ill all the time. He went to the doctor and they had his blood work checked. He had nearly poisonous levels of mercury in his system. The doctor told him that he's still in real danger of developing a lot of diseases or cancers but that if he kep t eating that way he would have died before too long.