Apparently Ivan Suzman has been reading the same magazines that I am namely: Natural History Jan 1999 and Atlantic Monthly Feb 1999 issues. Both cover in great detail the "new thinking" on pathogenic causes of many diseases that have until recently been thought to have been caused by environmental or genetic factors. A few examples are heart disease (especially fascinating), sickle cell anemia, gastric ulcers (almost all doctors agree on this one now, antibiotics instead of bland diets), cystic fibrosis, Alzheimers, most cancers, diabetes and now they are close to a pathogen for Schizophrenia! If schizophrenia and Alzheimers are proved to be caused by pathogens isn't it possible that PD is also? If you are interested in learning more, these two articles are absolutely fascinating and I would urge you to get copies or go to your library. Carl Miller Atlanta, GA [log in to unmask]