What is Oxygen Therapy (HBOT)?

Hyperbaric Oxygen Therapy (HBOT) involves breathing 100% pure oxygen in a specially pressurized chamber, typically at 1.5 to 3.0 times normal atmospheric pressure. This dramatically increases the amount of oxygen dissolved directly into your bloodstream, plasma, and tissues — far beyond what ordinary breathing achieves. Originally developed to treat deep-sea divers with decompression sickness, it has since expanded into a wide range of medical and wellness applications.

How does Oxygen Therapy (HBOT) work?

Under high pressure, oxygen dissolves into the blood plasma itself, not just the red blood cells, so it can reach areas with poor circulation or damaged blood vessels that normal oxygen delivery cannot penetrate. This flood of oxygen stimulates the body's natural repair processes: it triggers new blood vessel growth, reduces swelling and inflammation, activates stem cells, and directly kills certain anaerobic bacteria that cannot survive in oxygen-rich environments. Over a course of sessions, these effects stack to produce meaningful tissue repair and neurological recovery.

What forms does Oxygen Therapy (HBOT) come in?

Hospital-grade hard-shell monoplace and multiplace chambers operate at the full therapeutic 2.0–3.0 ATA range used for FDA-cleared indications. Soft-shell 'mild HBOT' chambers used in wellness and sports recovery settings typically operate at 1.3–1.5 ATA — effective for recovery and performance applications, though at lower intensity than clinical-grade sessions. Session length is typically 60–90 minutes.

Where it comes from:

HBOT traces its roots to the 1660s when physician Henshaw built pressurized rooms for respiratory conditions. Modern hyperbaric medicine took shape in the 1930s–1940s with military diving research, and the U.S. Navy established decompression treatment protocols in the 1940s. The FDA has cleared HBOT for 14 specific medical conditions, and research into off-label uses — including traumatic brain injury, long COVID, and anti-aging — has grown substantially since the 2000s.

What does Oxygen Therapy (HBOT) help with?

• Chronic wounds and diabetic foot ulcers: Many chronic wounds fail to heal because the tissue simply isn't getting enough oxygen to run the repair process. HBOT floods those tissues with oxygen, kick-starts new blood vessel growth, and gives the immune cells the fuel they need to clear infection — together these effects significantly improve closure rates for wounds that haven't budged with standard care.
• Decompression sickness (the bends): When divers ascend too quickly, nitrogen bubbles form in the blood and tissues, causing severe pain and potentially life-threatening complications. HBOT is the gold-standard emergency treatment: the high pressure physically shrinks the bubbles while pure oxygen flushes nitrogen out of the body rapidly.
• Stroke and brain injury recovery: After a stroke or brain injury, some brain cells are damaged but not yet dead — they're sitting in a low-oxygen 'twilight zone.' HBOT can re-oxygenate those areas, reduce brain swelling, and trigger the release of stem cells and growth factors that support neurological repair. Clinical research has shown measurable improvements in cognitive function and quality of life with structured treatment courses.
• Carbon monoxide poisoning: Carbon monoxide binds to hemoglobin far more tightly than oxygen, starving the body's tissues. HBOT displaces CO from hemoglobin many times faster than breathing ordinary air, reducing the risk of long-term neurological damage and cutting recovery time significantly.
• Radiation tissue damage: Radiation therapy can leave behind poorly oxygenated, fragile tissue that struggles to heal or tolerate surgical procedures. HBOT is an FDA-cleared treatment for radiation injury, helping rebuild the blood vessel network in affected areas and restoring tissue health well enough for further dental or surgical work.
• Sports recovery and performance: Athletes use HBOT to help muscles recover faster after intense training by clearing lactic acid buildup and reducing post-exercise inflammation. Mild chambers (1.3–1.5 ATA) are common in elite sports settings and have shown benefits for reducing delayed onset muscle soreness and shortening return-to-play timelines.
• Long COVID and post-viral fatigue: Long COVID appears to involve lasting inflammation and micro-vascular damage in multiple organ systems. Early clinical trials using HBOT in long COVID patients have shown meaningful improvements in brain fog, fatigue, and cognitive function, likely by promoting tissue repair and reducing neuroinflammation.
• Traumatic brain injury (TBI) and concussion: TBI leaves areas of the brain with reduced blood flow and oxygen delivery for months or years after the initial injury. Multiple clinical studies — including military veteran trials — have shown that courses of HBOT can improve post-concussive symptoms, sleep, mood, and cognitive performance, even years after the original injury.
• Infections (severe, anaerobic): Certain dangerous bacterial infections, particularly gas gangrene and necrotizing fasciitis, are caused by bacteria that cannot survive in oxygen-rich environments. HBOT is used as an adjunct to surgery and antibiotics to directly inhibit bacterial growth and enhance the immune system's infection-fighting capacity.
• Fibromyalgia and chronic pain: Research suggests fibromyalgia may involve abnormal brain activity patterns and central sensitization. A well-designed Israeli clinical trial found that HBOT significantly reduced pain and improved quality of life in fibromyalgia patients, with brain imaging showing normalization of abnormal activity in pain-processing regions.

What can Oxygen Therapy (HBOT) help prevent?

• Amputation in diabetic foot disease: HBOT as an adjunct to standard wound care has been shown to significantly reduce major amputation rates in patients with severe diabetic foot ulcers
• Long-term neurological damage from carbon monoxide poisoning: early HBOT treatment reduces the incidence of delayed neurological sequelae compared to normobaric oxygen

Which foods are rich in Oxygen Therapy (HBOT)?

HBOT is a physical therapy — you cannot get its effects from food. However, you can significantly support your body's oxygen utilization and tissue repair between sessions through diet. Focus on: iron-rich foods (grass-fed red meat, lentils, spinach) to support healthy hemoglobin and oxygen-carrying capacity; nitrate-rich vegetables (beets, arugula, leafy greens) which the body converts to nitric oxide, improving blood vessel dilation and circulation; antioxidant-rich foods (berries, colorful vegetables, green tea) to help manage the oxidative load that high-pressure oxygen can generate; and omega-3 fatty acids (wild salmon, sardines, flaxseed) to support the anti-inflammatory effects HBOT initiates. Staying well-hydrated before sessions also supports plasma oxygen diffusion. Avoid alcohol and smoking during a treatment course — both impair oxygenation and vascular repair.

What are the side effects of Oxygen Therapy (HBOT)?

• Ear and sinus pressure or barotrauma (most common: similar to the feeling on an airplane; usually resolved by equalizing pressure)
• Temporary vision changes: mild nearsightedness that typically reverses within weeks of completing treatment
• Oxygen toxicity seizures: rare, occurs primarily at pressures above 2.0 ATA with pure oxygen; a known and manageable risk in clinical settings
• Claustrophobia in monoplace chambers
• Fatigue or lightheadedness immediately after sessions
• Lung barotrauma: very rare, risk is higher in patients with certain lung conditions (e.g., emphysema, untreated pneumothorax)
• Hypoglycemia in diabetic patients during or after sessions
• Fire risk: pure oxygen environments are highly combustible; only permitted materials and clothing are allowed in chambers (strictly managed in clinical settings)

Good to know:

HBOT has an excellent safety record when performed under proper medical supervision in appropriate chambers. Most side effects are mild and temporary. Serious adverse events are rare and are more likely at higher pressures or with certain medical contraindications.

How much Oxygen Therapy (HBOT) should you take?

• Recommended daily: FDA-cleared indications: 2.0–2.5 ATA for 90–120 minutes per session, once or twice daily. Mild/wellness HBOT: 1.3–1.5 ATA for 60 minutes per session. Number of sessions varies by condition: decompression sickness may require 1–3 emergency sessions; wound healing and neurological recovery typically require 20–40 sessions; fibromyalgia trials used 40 sessions.
• Best time of day: Morning or early afternoon sessions are generally preferred, as some people experience mild energizing effects from HBOT that can interfere with sleep if done in the evening. Consistency in session timing is more important than specific time of day.
• With or without food: Eat a light meal 1–2 hours before a session. Avoid heavy meals immediately before treatment as chamber pressure can make a full stomach uncomfortable. Stay well hydrated before and after each session.
• Time to effect: Acute conditions (CO poisoning, decompression sickness): effect within 1–3 sessions. Wound healing: measurable improvement typically by sessions 10–20. Neurological and cognitive outcomes: often most apparent after completing a full course of 20–40 sessions, with continued improvement in the weeks following.
• How long to take it: For most conditions, HBOT is given as a structured course (20–40 sessions) rather than ongoing indefinitely. Maintenance sessions after completing a primary course are used in some neurological and wound care protocols. For wellness and sports recovery use, periodic courses (10–20 sessions) with breaks are typical. Always under guidance of a hyperbaric medicine physician for clinical indications.