Hi lurking,
Well done, a well thought out theory. You quoted my rule that the theory that answers the most questions wins, and yours certainly is near the front row. As I read it, I looked for the answer to why some folk reach 100 PD free and others like MJF get it in their 20's. Your explanation of wrong diet is a good one, but some young onset people are known to get PD in their teens. Is there enough time for overcrowding to be caused of the veins etc in the skull.
It would be very interesting to get figures if they exist of vegetarians versus meat eaters getting PD. I must admit I had plenty of vegetables in earlier life, a faster life and fast food later on. I was diagnosed at 55.
Also would a post mortem show overcrowding in the skull? Has it been seen I wonder.
Ron