There could be several causes for this - the most likely is the improvement in diagnostics, primarily related to a treatment. There is a good correlation between education and publicity from the manufacturers of drugs and improvement in diagnostics. The second is that from info I've seen there is a "ramp down" of dopamine and that starts at a young age (20's-30's) IF, repeat IF one extrapolates from levels of measured dopamines in PD'ers. The articles I read were not very well researched, they had not had a high degree of peer review and the samples were not gathered in a statistically random manner. Sorry, but I'm sure there is a clear need and market to improve diagnotics for PD which may improve understanding of the disease. COLMAN Wendy, Nancy, Debbie or Colman Mullin [log in to unmask] On Tue, 14 Feb 1995, Charles Barasch wrote: > I was just wondering today about a subject I've never seen > addressed. From what I've heard, there seems to be an increase > in "young-onset" PD. (I guess "young" is relative; I'm > considered young for PD, but still too old to play for the > Yankees, even as a replacement player.) It's unknown why > there's this increase, but the most common theory I've seen is > that it's caused by things environmental. Has anyone explored > the possibility that there's a connection with some illness we > had as children, similar to the connection between PD and the > flu of 1918? > > Charles Barasch ([log in to unmask]) >