Remarkable Brain Healing
Hyperbaric oxygen therapy has been used in medicine for nearly a century, and today it is one of the most actively researched therapies for brain recovery. Modern brain imaging now lets researchers see what HBOT does inside the brain, including improved blood flow to injured areas and signs of new neural connections, alongside the real-world changes patients notice in memory, focus, sleep and mood.
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Breathing pure oxygen under pressure, in a series of sessions, creates what researchers call the hyperoxic-hypoxic paradox: the repeated rise and fall in oxygen levels switches on many of the same repair genes the body uses when oxygen is scarce, including hypoxia-inducible factor (HIF). This signaling encourages the growth of new blood vessels, mobilizes the body’s own stem and progenitor cells, supports mitochondrial function and calms inflammation, giving injured brain tissue a better environment in which to heal.
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Most brain-focused research protocols use 40 to 60 sessions, typically over two to three months. Many patients notice changes along the way, and studies suggest that improvements often hold, or continue to build, after the course is complete.
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Not necessarily. Controlled trials have shown improvements in people living with symptoms months or even years after a concussion, traumatic brain injury or stroke. Every brain and every injury is different, so we’ll talk through your history and goals and set realistic expectations together.
Research on HBOT for Brain Healing
Brain-recovery research has advanced considerably in recent years, from independent double-blind trials in the United States to the first meta-analyses pooling results across studies. The evidence is strongest for memory, thinking and sleep after mild traumatic brain injury, and research continues in stroke, PTSD, long COVID and age-related cognitive decline.
Effectiveness of hyperbaric oxygen in traumatic brain injury patients: A systematic review and meta-analysis
Complementary Therapies in Medicine, Oct. 2026
Haiming Wang, et al.
This newly published meta-analysis pooled 8 randomized controlled trials with 570 participants. HBOT significantly improved cognitive performance, executive function and processing speed, memory and sleep quality, particularly in people with mild traumatic brain injury. Results for PTSD and emotional symptoms were less consistent, and side effects were mostly mild and short-lived.
A double-blind randomized trial of hyperbaric oxygen for persistent symptoms after brain injury
Scientific Reports, 2025
Lindell K. Weaver, et al.
In this independent U.S. trial, adults with lingering symptoms after a brain injury (most from traumatic brain injury) received either 40 HBOT sessions or 40 sham sessions. The HBOT group improved significantly more on the main symptom measure, with notable gains in sense of smell, anxiety, sleep and balance-related complaints. Participants who went on to complete a second series of 40 sessions reported further improvement at 12 months.
Hyperbaric oxygen therapy for mild traumatic brain injury persistent postconcussion syndrome: a randomized controlled trial
Medical Gas Research, Jan.-Mar. 2020
Paul G. Harch, Susan R. Andrews, Cara J. Rowe, Johannes R. Lischka, Mark H. Townsend, Qingzhao Yu, and Donald E. Mercante
This randomized controlled trial demonstrated statistically significant improvements in post-concussion and post-traumatic stress symptoms, memory, cognitive function, depression, anxiety, sleep and quality of life in civilian and military participants living with mild traumatic brain injury and persistent post-concussion syndrome, compared with controls. Improvements persisted at least two months after the 40th HBOT session.
Hyperbaric Oxygen Treatment—From Mechanisms to Cognitive Improvement
Biomolecules, Oct. 2021
Irit Gottfried, Nofar Schottlender, Uri Ashery
This comprehensive review explains how HBOT may support cognitive improvement after a range of brain injuries and disorders. It covers the key mechanisms behind HBOT’s effects: improved mitochondrial function, neurogenesis (the creation of new brain cells), angiogenesis (the creation of new blood vessels), stem cell proliferation, reduced neuroinflammation, and neuroprotective, antioxidant and anti-apoptotic activity. It remains one of the clearest overviews of how HBOT works in the brain.