To discuss one small part of what Greg wrote about: I don't think stem cells and gene therapy will ever be THE cure for PD because of the extreme difficulty of the delivery system. Brain surgery for 100,000 Canadians? Our health care system could not even dream of providing that. The selection system would be exacting. Right now you can't get the better hip replacement available (Birmingham hip) in Alberta if you're over 60. So I find it incredibly frustrating that so much money and time are going into impractical research.