Could this also be beneficial for PD ?
hi mr x
hbot treatment has been on the map for pd for several years, not aware of any definite scientific studies.

HBOT and oxidative stress
HBOT enhances the production of reactive oxygen species (ROS) and causes oxidative stress in body tissues [10]. Excessive accumulation of oxidative stress may contribute to neurodegenerative processes and cell death in the brain, as seen in diseases like Alzheimer's disease (AD) and Parkinson's disease (PD) [41]. Since HBOT-induced oxidative stress is directly proportional to both exposure pressure and duration, the benefits of HBOT, may outweigh the side effects due to the phenomenon of hormesis. Hormesis is a process that results in a functional improvement of cellular stress resistance, survival, and longevity in response to sub-lethal levels of stress. We suggest that this process might be beneficial in the treatment of oxidative stress associated neurodegenerative diseases like AD and PD.

ie a little stress may make cells tougher - or kill them off faster!

Seems like no real results from the treatment.