It is difficult to figure out what is going on, or even to figure out how much mercury is in the body. I am also starting to think that the whole situation is quite complex, and mercury toxicity could make glutathione and other substances necessary for metal detoxification to be deficient, so that those who don't even take in large amounts of other toxic heavy metals could over time still become toxic from the other metals, as the body isn't properly excreting them.