Can breathing pure oxygen under pressure truly accelerate the body's natural healing process?
In short: Hyperbaric oxygen therapy places patients in pressurized chambers to deliver 100% oxygen, aiming to boost healing for specific medical conditions. While the science is robust for issues like carbon monoxide poisoning and radiation injury, the therapy is often marketed for unproven uses, raising questions about efficacy and safety.
Hyperbaric oxygen therapy (HBOT) involves breathing pure oxygen at pressures higher than atmospheric levels. The process occurs in specialized chambers—either monoplace, for one person, or multiplace, for groups. During a session, which typically lasts one to two hours, the increased pressure helps the body absorb more oxygen, which can assist in treating conditions like gas gangrene, crush injuries, and delayed radiation damage to bone or soft tissue.
The Undersea and Hyperbaric Medical Society lists 15 supported uses for HBOT as of 2025, including carbon monoxide poisoning and necrotizing soft tissue infections. However, the medical community remains cautious. While HBOT can show early benefits for diabetic foot ulcers, studies indicate it often fails to provide long-term improvements or reduce major amputation rates. Furthermore, there is insufficient evidence to support its use for conditions like autism, stroke, multiple sclerosis, or cerebral palsy, where the risks of side effects like ear barotrauma may outweigh any potential gain.
Safety is a primary concern in any hyperbaric environment. Because pure oxygen is highly flammable, patients must remove all metal and electronic devices before entering the chamber to prevent sparks. Older medical implants, such as pacemakers from the 1960s, may malfunction under pressure. Patients might experience ear discomfort, similar to the sensation of flying, which can usually be managed by swallowing or yawning. After treatment, some individuals feel sleepy, but the therapy is generally considered safe when administered under strict clinical oversight.
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Sources
- Summary by Intellect · source: Hyperbaric Oxygen Therapy: What It Is & Benefits, Side Effects
- Also: Hyperbaric medicine
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