Much more concerning neurodegeneration and Alzheimer's particularly, not so much PD but still of note. Takes a slow read but very interesting, reminded me about how excess stress does affect aging and neurodegeneration generally, as per aging generally, and Vitamin C role in slowing it, but the idea reminds me about the role of vitamins generally and their importance.
Some here such as Rescuma have championed their involvement and certainly that is a fine thing to remember and important to point out from time to time. Now we see expanded roles for Vit C and parenthetically, E. Helps us not lose our marbles too fast, as unfortunately happened to Captain Queeg (he could keep some of them in his pocket for old times sake but they weren't much use).
Very nice review, and be sure to follow-up the relevant references to the extent possible.