I've been reading about mercury in vaccinations, heavy metals, free radicals, and intestinal damage due to diet and yeast overgrowth. In my reading I've seen the connection to ADHD, Austism, and other illnesses that are in our children. I'm thinking of looking into difficult child being analysed for these things. I've seen signs and symptoms in difficult child that lead me to think he has a yeast overgrowth, and there's a breath test to confirm that (I read). I'm also thinking of looking into mercury poisoning due to his ECH shots. Have any of you done any testing on your difficult child's for these things? What was your experience like? And, has any difficult child been through the IV Chelation treatment? I've read remarkable improvements in children with Austism, to where it even cured them. I'm just finding it difficult for me to NOT look into these things (if it can help), instead of pumping him with medications to cover-up symptoms.