I am reading this too. Looks like it would be a treatment program used along with proscribed meds. He is saying that he sees a correlation between patients carrying a heavy toxic load of heavy metals, pesticides/solvents, mycotoxins (molds), etc., and PD diagnoses. Determining this requires specific lab work, not the kind of thing normally done in traditional doctors offices - more of a deep testing dive. This is not usually covered by insurance (of course). Since trad medicine has no idea why this happens, I like the idea of looking for specifics with lab work.