Today is a good day! How are you doing?

Thank you. I hope you are having a good day!

It really differs for each person. Researchers are trying to understand why people progress differently, via the Parkinson's Progression Markers Initiative that you can participate in on the Michael J. Fox Foundation website. As AI said, it depends on age of onset, cause of Parkinson's, other illnesses, activity level, etc. It is known that exercise can slow progression, but there are a lot of factors involved. I've seen people on this site who have had PD for 20 + years and are still able to take care of themselves, and others who are in a wheelchair 2 years after diagnosis.

Thanks for the continuous support.