I belong to a chelation for autism yahoo group. I dont have autism but i would consider myself to be aspergers which is a step down from autism. There is a strong correlation between autism and heavy metals. The mothers are vigilant at getting their children better and if something doesnt work they tell you and vice versa. I dont post very often there, I just mostly listen to their stories, and i hear over and over that children with yeast become free of yeast after so many rounds of chelation. Ive recently started chelating so I cant really tell either way but it seems to make since to me. : )