Members, I apologized to Robert through private e-mail. I had forgotten that he was a Neurologist. I have been a member of this list for about three years. I don't get much time to write. What I told to Robert, I would like to explain to the group. Not only do I have a father with Parkinson's, but I also have (had?) a child with autism. I pursued an interest in digestive disorders. Despite the fact, that most everyone thought that autism was due to bad wiring in the brain. Last year my interest paid off, and it landed me on Dateline last September. What happened was I found a doctor to give us a peptide hormone after I learned of another child's recovery. My son went from severely autistic to barely developmentally delayed. This peptide hormone had been used for over 50 year for the study of pancreatic insufficiency. It had little if any therapeutic value. Because of my experience, and the new knowledge that digestive disorders (improper breakdown of digestive enzymes) or pancreatic insufficiency can cause autism, then it doesn't sound unreasonable to me that a liver disorder could cause Parkinson's disease. My father as you might can understand wouldn't be surprised if his disease was caused by something going wrong in the liver, he has witnessed what a peptide hormone has done for his grandson. Best, Linda