Wow. Thanks for posting! I’ve recently been researching oxygen therapy, having read and ordered several books on the subject. I will be adding your link to my notes as an additional reference.
I treat wounds here that includes HBO therapy. We have some people who have had 5 days treatment for weeks. No one reports any increase energy, or skin changes etc.
5 ninety minute sessions per week will cost around $1500-$2000 per session.
I’m told HBO clinics abound in Florida giving sessions for several $100 each
I frequent the dentist once a month...for NITROUS OXIDE!!