My MDS is a big proponent of a healthy mix of Whole Foods including fruits, veggies & protein (in moderation). He basically said he’s a fan of anything that’s not a “fad” diet with lots of restrictions. Also, to stay way from high cost supplements pitched to cleanse/detox etc. Vitamins for sure, but no need to break the bank.

Supposedly the Mediterranean diet is very good for Parkinson's. So look for a book on that.