It appears to be the case that PIPmix works by improving the damaged metabolism of the neurons throughout the system and thus allowing normal cell repair and protein cleaning up to take place. It may be that there is also an anti-diabetic effect. There is a suggestion that PD may result from long-term chronic sub-clinical diabetes or that this may combine with genetic propensity and gut bacterial / viral / prion damage. In other words a host of possible causes.
All we know is that this treatment method of food additives and supplements can help some PwP over a long period and it appears to slow, halt or reverse the decline in some people. We have a case of a person Dx 14 years ago who had reached the stage of needing to be fed and unable to raise the head for this to happen. After 18 months on PIPmix the person can now self-feed and sit up straight to do so. This is a major advance for that person who now feels able to go to a restaurant again!.
Another PwP Dx 7 years ago and on PIPmix from the start has regained smile, facial expression, balance, gait, armswing, sense of smell, fine motor control, good sleep, less pain and cramps and constipation.
So the healing process is slow just like the onset of PD which may be 10 - 15 years before symptoms become sufficient for diagnosis.