What HBOT Is, How It Works, and Why It Heals
HBOT Therapy
Hyperbaric Oxygen Therapy
Overview
What HBOT Is
Hyperbaric Oxygen Therapy (HBOT) is a non-invasive medical treatment in which you breathe 100% medical-grade oxygen inside a pressurized chamber. The combination of pressure and pure oxygen dramatically increases the amount of oxygen dissolved into your blood plasma — driving oxygen into tissues that injury, infection, or compromised circulation would otherwise leave undersupplied. HBOT has more than fifty years of clinical use and is recognized by the Undersea and Hyperbaric Medical Society (UHMS) and covered by OHIP for evidence-based medical indications.
On This Page
Explore HBOT in Detail
This is the hub. Detailed reading is broken into sub-pages.
At a Glance
Quick Summary
Treatment pressure
Usually 2.0–2.4 ATA (atmospheres absolute), set by indication
Gas breathed
100% medical-grade oxygen
Session length
~90 minutes inside the chamber at treatment pressure (~2 hours total visit)
Typical course
20–40 sessions, daily Mon–Fri, with variation by indication
Mechanism
Dramatic increase in dissolved oxygen in blood plasma, driving angiogenesis, immune support, anti-inflammatory effects, and stem cell mobilization
Setting
Monoplace chamber, clear acrylic, single patient, continuous staff monitoring
Medical review
Dr. Vik Agarwal MD CCFP FRCPC CAQ-HP — President, Evolve Medical Group
Dr. Seema Agarwal MD CCFP CAQ-HP — Chief Medical Officer, Evolve Hyperbarics
Last reviewed: May 2026 · Next: May 2027
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