Does anyone know a good serious forum/blog?

Hello Gcf51, These are valid questions for a very good topic: Alternative medicines for Parkinson's. Unfortunately we cannot give out medical advice. However, we can direct you to options that might work for you especially since medical researchers still do not know the cause of PD. Here is an article that might give you some insight to alternative medicine in the meantime:
https://parkinsonsdisease.net/treatment/complementary-alternative.
Please let us know if you find this helpful.
Best regards, Suzanne Troy, Advocate, ParkinsonsDisease.net