Hyperbaric Oxygen Therapy: What It Genuinely Treats — and What's Just Hype

Hyperbaric oxygen chambers have become a fixture of the wellness world. You'll see them marketed for energy, recovery, "detox", better skin, sharper focus, even reversing ageing — often by clinics and spas with a striking before-and-after story. So it's worth doing what we try to do with any trend: separate the part that's genuinely backed by evidence from the part that's marketing. Hyperbaric oxygen therapy (HBOT) is a real, established medical treatment — for a surprisingly short list of conditions. For most of what it's sold for, the honest answer is "not proven". Here's the full picture.

What HBOT actually is

HBOT means breathing 100% oxygen inside a sealed chamber pressurised above normal atmospheric pressure ³. Ordinary air is about 21% oxygen at sea level; raising both the concentration and the pressure forces far more oxygen to dissolve directly into your blood plasma, over and above what your red blood cells normally carry ³. The physics is old and well understood — gases compress and dissolve more readily under pressure — and that extra dissolved oxygen is what drives the genuine medical effects: helping tissues starved of blood supply to heal, and helping the body fight certain infections.

What it genuinely treats

There's an authoritative list. The Undersea and Hyperbaric Medical Society (UHMS) maintains the set of conditions for which HBOT is an approved, standard-of-care therapy, and the FDA has cleared chambers for a similar group ¹². They include:

• Decompression sickness (the diver's "bends") and air or gas embolism
• Carbon-monoxide poisoning
• Gas gangrene and other serious, flesh-threatening infections
• Non-healing wounds, particularly diabetic foot ulcers, and tissue damage from past radiation treatment
• Crush injuries, compromised skin grafts, stubborn bone infection, and severe anaemia, among a few others ¹

Notice the theme: these are mostly serious, often emergency or hospital situations, where getting more oxygen into compromised tissue makes a real, measurable difference. This is HBOT doing exactly what the science says it can. For those uses it isn't "alternative" at all — it's established medicine.

What it's marketed for — and what the evidence says

Now the other column. Outside that list, hyperbaric chambers are promoted for a long line of things the evidence doesn't support. The FDA has issued a consumer caution specifically because of this: it states plainly that HBOT has not been proven to treat conditions like cancer, Alzheimer's disease, autism, or Lyme disease, and that it is not a general wellness or anti-ageing cure ². The regulator's concern isn't only that you'd waste money — it's that chasing an unproven treatment can lead people to delay or skip care that actually works ². For everyday "more energy" and "recovery" claims in healthy people, there simply isn't the body of solid trial evidence that the approved indications have.

The "reverses ageing" headline, honestly

If you've seen the claim that hyperbaric oxygen "reverses ageing", it traces back to essentially one study — a 2020 trial from Israel that gave 35 older adults 60 sessions over about three months and reported longer telomeres and fewer "senescent" (worn-out) immune cells afterwards ⁶. It's a genuinely interesting result, and we don't dismiss it. But it has to be read for what it is: a small study of 35 people with no control group, measuring cell-level surrogates — telomere length and senescent-cell counts — rather than any real-world health or lifespan outcome, and it hasn't been replicated ⁶. In research terms that's hypothesis-generating, not proof. If you're curious about the underlying biology, we cover senescent "zombie" cells and what biological age does and doesn't mean separately — both are areas where the science is real but the marketing tends to run well ahead of it.

It isn't risk-free

Because it's sold as a gentle wellness perk, it's easy to assume HBOT is harmless. It isn't. The most common issues come from the pressure itself — barotrauma to the ears and sinuses — and breathing high-concentration oxygen can cause oxygen toxicity, which can show up as seizures or as temporary short-sightedness (myopia) that usually settles afterwards ⁴. Oxygen-rich environments also carry a real fire risk. There are firm contraindications, too: an untreated collapsed lung (pneumothorax) is considered an absolute reason not to undergo HBOT, because the pressure changes can make it life-threatening ⁵. This is exactly why it belongs in a properly accredited hyperbaric facility under medical supervision, not treated as a casual spa add-on ².

Where we stand

To be straight with you: we don't currently offer hyperbaric oxygen therapy at Cureon. For the approved medical indications above, the right place is an accredited hyperbaric unit, and we'd point you there. For the wellness and anti-ageing claims, our honest view is the one we take with any biohacking trend — interesting, not proven, and not something we'll sell you on a promise the evidence doesn't back. That's the same lens we apply across the field; if you like that approach, our honest take on biohacking sets out how we think about what's worth your attention and what's just noise.

Common questions

Will a session give me more energy or speed up recovery? For healthy people, that's the marketing more than the evidence — the strong proof is for the specific medical conditions on the approved list, not general energy or recovery ¹².

Are the "mild" inflatable home or spa chambers the same thing? No. Those soft chambers run at much lower pressure than medical HBOT, and the evidence for benefit at those levels is weaker still. The genuine medical effects come from the higher pressures used in accredited units ³.

Does it really reverse ageing? The honest answer is that one small, uncontrolled, unreplicated study found changes in cell-level markers — not proof of reversing ageing in any meaningful sense ⁶. Treat the headlines with caution.

Is it dangerous? For approved uses in a supervised, accredited facility it's generally safe, but it isn't without risk — ear and sinus barotrauma, oxygen toxicity, and temporary vision changes can occur, and some conditions rule it out entirely ⁴⁵.

Do you offer HBOT? No — we don't currently provide it. We're happy to talk honestly about whether it's relevant to your situation, and to point you to an accredited unit if it is.

Key takeaway

Hyperbaric oxygen therapy is a real, well-established treatment — for a narrow, specific list of conditions like decompression sickness, carbon-monoxide poisoning, serious infections, and non-healing diabetic or radiation wounds ¹. For the much longer list of things it's marketed for — anti-ageing, everyday energy, and various chronic conditions — the evidence isn't there, and the FDA has said so directly ². The viral "reverses ageing" claim rests on a single small, uncontrolled study ⁶. It also carries genuine risks and belongs in an accredited facility ⁴⁵. We don't offer it — but we're always happy to give you the honest version, which is exactly what HBOT's real evidence deserves.