Hyperbaric oxygen therapy has a real evidence base for a specific set of conditions, and a marketing problem everywhere else. Both things are true at once, and telling them apart is most of what this article is for.
You breathe oxygen inside a chamber pressurised above normal atmospheric pressure. Under that pressure, far more oxygen dissolves directly into the plasma, the liquid part of your blood, rather than riding on haemoglobin the way it normally does. Dissolved oxygen reaches places red blood cells struggle to get to, including tissue where circulation has been damaged.
That mechanism is not controversial. It is why the therapy works for the conditions it is cleared for. The question is always whether the condition in front of you is one where more dissolved oxygen changes the outcome.
Not all hyperbaric chambers are the same, and the difference matters more than almost anything else you will read about HBOT.
Hard-shell clinical chambers run at roughly 2 to 3 times atmospheric pressure (2 to 3 ATA) and deliver near-100 percent oxygen. This is what hospital hyperbaric units use, and it is what nearly all of the clinical research was done on.
Soft-shell or "mild" chambers typically run at around 1.3 ATA. They are the ones you find in wellness settings and for home use. In the United States they are cleared for one indication: acute mountain sickness. Research conducted at 2.4 ATA does not automatically transfer to 1.3 ATA, and any article that quotes hospital research while describing a mild chamber is blurring two different things.
If you are considering HBOT anywhere, ask what pressure the chamber runs at and what it is cleared for. A provider who cannot answer that plainly is a provider to be careful with. Our hyperbaric oxygen therapy page covers what we offer, and we will tell you directly whether it fits what you are dealing with.
The FDA has cleared hyperbaric oxygen therapy for a defined list of conditions. The main ones:
Notice what these have in common. Almost all of them are situations where tissue is short of oxygen for a mechanical reason, or where a gas needs clearing from the body. That is the shape of a condition HBOT helps.
The FDA has issued consumer warnings about centres promoting hyperbaric oxygen for uses it has not cleared. The list it names includes cancer, Alzheimer's disease, autism, Lyme disease, multiple sclerosis, Parkinson's disease, diabetes, cerebral palsy, sports injury recovery and anti-aging.
That is not a statement that research into these has stopped. Some of it is ongoing and some of it is interesting. It is a statement that the evidence does not currently support selling the therapy for them, and that a clinic presenting it otherwise is telling you something the regulator disagrees with.
One distinction worth holding onto, because it gets misused constantly: HBOT has an established role in delayed radiation injury, which is repairing tissue damaged by radiotherapy. That is not the same as treating cancer, and it is not the same as making chemotherapy or radiotherapy work better. If you see the first fact used to imply the second, you are reading marketing.
You lie or sit in the chamber for somewhere between 60 and 120 minutes depending on the protocol. Pressure comes up gradually. Most people feel their ears needing to equalise on the way, much like a descending aircraft, and you will be shown how to clear them. After that it is uneventful. People read, listen to something, or sleep.
Courses for cleared indications typically run to a substantial number of sessions rather than one or two. Wound protocols often run 20 to 40. Anyone offering a single session as a fix for a chronic problem is not describing how the therapy is used clinically.
HBOT is well tolerated by most people, which is not the same as risk-free.
An untreated collapsed lung (pneumothorax) is an absolute contraindication. Tell anyone assessing you if that is a possibility. Certain chemotherapy drugs, particularly bleomycin, matter too. So do recent ear surgery, uncontrolled fever, seizure disorders, severe claustrophobia and some lung conditions. Pregnancy needs individual assessment.
None of that is a reason to dismiss the therapy. It is a reason to be assessed by someone who takes a full history first rather than booking you in.
Four questions worth asking anywhere, including here:
A provider who answers the second question honestly, including when the answer is "no, and here is why", is worth more than one who says yes to everything.
We offer hyperbaric oxygen therapy as part of a wider plan, not as a standalone answer, and we would rather tell you it is not appropriate than take a booking. If you have a cleared indication, the right route is usually a hospital hyperbaric unit, and we will say so. Dr. Gail Ravello reviews your history first either way.
To talk it through, call (770) 674-6311 or contact us. Our hyperbaric oxygen therapy page has the practical detail, and natural pain management and disease prevention cover the approaches this tends to sit alongside.
This article is general information, not medical advice. Hyperbaric oxygen therapy does not diagnose, treat or cure any condition it has not been cleared for, and nothing here replaces the care of your own doctor.
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