Stair climbing is not an issue with me. I am 59 and was diagnosed with PD 18 months ago. I have been exercising:
- walking,
- walking with trekking poles,
- lifting weights,
- riding stationary bike (gave up riding in the street since my accident)
- balance exercises, and
- Big and Loud exercises. I
believe the whole package of activities has keep me stable for now
I am not taking any meds.
I also believe diet has helped.

For whatever its worth 🙂