I read people are doing "chelation" and using things like ALA, EDTA or DMSA (whatever they are). I think this means they are using these substances to bind to unwanted items like mercury to escort them out of the body. But ... I read on the supplement labels that this "chelated" form of Vit or Mineral X is better than the other kinds because it is more bioavailable and easier for the body to use. So does any supplement that says chelated or mineral chelate actually bind to something like mercury? How would a chelated vitamin be easier to absorb or more useful to me if it is doing this? I'm really confused. Should I be buying chelated supplements or avoiding them? How do I know which "bad guys" bind to which supplements?