Hyperbaric Oxygen Therapy (HBOT) involves breathing 100% pure oxygen in a sealed chamber pressurized to 1.5–3.0 times normal atmospheric pressure. This dramatically increases the amount of oxygen dissolved directly into your blood plasma, allowing it to reach tissues that normal red blood cell delivery cannot. It was first developed in the 1930s for deep-sea diving decompression sickness and has since grown into a recognized medical treatment for over a dozen FDA-cleared conditions.

Under elevated pressure, oxygen dissolves into blood plasma at levels 10–15 times higher than normal breathing, flooding oxygen-starved or damaged tissues. This hyperoxic environment stimulates the growth of new blood vessels, enhances white blood cell activity to fight infection, reduces dangerous swelling in brain and injured tissue, and triggers stem cell release from bone marrow. It also creates a hostile environment for certain anaerobic bacteria that cannot survive in high-oxygen conditions.

Hospital-grade hard-shell monoplace or multiplace chambers deliver the highest therapeutic pressures (2.0–3.0 ATA) and are used for serious medical conditions. Soft-shell mild hyperbaric chambers operate at 1.3 ATA and are available for home or wellness use, offering gentler benefits with a lower risk profile. For FDA-cleared indications, only hard-shell medical chambers are used clinically.

• Non-healing wounds and diabetic foot ulcers
• Carbon monoxide poisoning
• Decompression sickness (diving injuries)
• Brain fog and cognitive decline
• Traumatic brain injury (TBI) and concussion
• Post-COVID fatigue and long COVID
• Radiation tissue damage (after cancer treatment)
• Bone infections (osteomyelitis)
• Stroke recovery
• PTSD and mental health support

• Amputation in diabetic foot ulcer patients (when used as adjunct to standard care)
• Long-term neurological damage from carbon monoxide poisoning
• Permanent disability from severe decompression sickness when treated promptly

HBOT is a chamber-based medical therapy, not a nutrient found in food. However, your diet can significantly affect how well your body responds to it. Foods rich in antioxidants (berries, leafy greens, colorful vegetables) help protect tissues from the oxidative stress that high-dose oxygen can produce. Nitrate-rich foods like beets, arugula, and spinach support nitric oxide production and blood vessel dilation, complementing HBOT's goal of improving tissue oxygenation. Adequate protein intake from fish, legumes, eggs, and lean meats supports the tissue repair and collagen synthesis that HBOT promotes. Anti-inflammatory omega-3 fats from fatty fish, flaxseed, and walnuts help reduce the inflammatory burden HBOT is often used to counter. Avoid alcohol and smoking around sessions, as both impair oxygen delivery and blunt the therapy's benefits.

• Ear pressure or discomfort (barotrauma) — the most common issue, similar to pressure changes when flying
• Sinus pressure or mild pain, especially in people with congestion
• Temporary vision changes (nearsightedness) that typically resolve after completing a course of treatment
• Fatigue or lightheadedness immediately after sessions
• Claustrophobia in monoplace chambers
• Oxygen seizures — very rare, occur at high pressures (above 2.5 ATA) and typically self-resolve immediately
• Pulmonary oxygen toxicity — extremely rare under proper clinical protocols, associated with excessively long sessions at high pressure
• Fire risk — oxygen-rich environments are flammable; certified chambers have strict safety protocols to prevent this

• Recommended daily: For FDA-cleared medical indications: 90–120 minutes per session at 2.0–2.5 ATA, 5 days per week, for 20–40 sessions total depending on the condition. For mild/wellness HBOT (soft chambers at 1.3 ATA): 60 minutes per session, frequency varies by protocol. Always prescribed and supervised by a certified hyperbaric physician for medical use.
• Best time of day: Morning or midday sessions are preferred by most clinics as some people feel energized after treatment. Avoid evening sessions if the therapy affects your sleep.
• With or without food: Eat a light meal 1–2 hours before a session. Avoid heavy meals immediately beforehand as pressure changes and lying still can cause discomfort. Stay well hydrated before and after each session.
• Time to effect: Acute emergencies (CO poisoning, decompression sickness): benefit begins within a single session. Wound healing: measurable improvement often within 10–15 sessions. Neurological and cognitive conditions: most protocols are 40 sessions, with improvements often noticed from session 20 onward.
• How long to take it: For medical conditions, standard courses run 20–40 sessions. After completing a course, maintenance sessions (monthly or as needed) are sometimes used for chronic conditions. For wellness applications, shorter courses of 10–20 sessions are common, repeated seasonally or as needed. Do not self-prescribe for medical conditions — always work with a certified hyperbaric medicine provider.