Concussion · Brain Injury · HBOT Research · 8 Min Read
HBOT for Concussion & Brain Injury: What Does the Research Show?
Concussion is often described as a mild traumatic brain injury, but the symptoms can be anything but mild.
Headache, fatigue, poor concentration, sleep disturbance, dizziness and reduced tolerance for work or exercise can continue long after the original impact.
Hyperbaric Oxygen Therapy (HBOT) is being studied in this area because of the brain’s high energy demands — and because HBOT can substantially increase the amount of oxygen available to the body under pressure.
See What the Research Shows ↓Why the Brain?
Why Is HBOT Being Studied After Brain Injury?
The brain is extraordinarily active tissue. Although it represents only a relatively small proportion of total body weight, it has substantial and continuous energy requirements.
After a traumatic brain injury, researchers are interested not only in the original mechanical impact, but also in the biological processes that follow it.
This is where HBOT becomes particularly interesting.
Inside a hyperbaric chamber, increased atmospheric pressure allows more oxygen to dissolve directly into blood plasma. This creates a temporary environment of substantially increased oxygen availability.
Why Researchers Are Interested
Increased Pressure + Oxygen
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More Oxygen Dissolved in Plasma
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Increased Oxygen Availability
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Potential Influence on Brain Metabolism, Inflammation & Repair
Researchers are investigating whether this change in oxygen availability may influence processes involved in brain metabolism, inflammatory signalling, tissue recovery and neuroplasticity.
The Science
What Could HBOT Be Influencing in the Brain?
The scientific interest in HBOT after traumatic brain injury is not based on one single mechanism.
Researchers are looking at several overlapping biological processes that may be relevant to recovery.
Brain Oxygenation
HBOT substantially increases dissolved oxygen in plasma, increasing the amount of oxygen available throughout the body while under pressure.
Brain Metabolism
The brain has high energy demands. Oxygen availability is closely linked with aerobic cellular energy production and normal neurological function.
Inflammatory Processes
HBOT has been studied for its effects on biological signalling involved in inflammation following injury.
Neuroplasticity
Researchers are investigating possible effects on neuroplasticity — the brain’s ability to reorganise, adapt and form new functional connections.
These mechanisms provide the scientific rationale for studying HBOT after brain injury. But mechanisms alone are not enough.
The more useful question is: what have studies involving people with traumatic brain injury actually found?
The Research
What Does the Human Research Show?
HBOT and traumatic brain injury have been studied for a number of years, and the research has not always produced identical conclusions.
More recent systematic reviews are helping to bring those studies together — and the findings around cognitive function are particularly interesting.
2025 Systematic Review & Meta-Analysis · 250 Patients
Significant Improvements Across Multiple Cognitive Areas
A 2025 systematic review and meta-analysis examined HBOT for neurocognitive deficits following traumatic brain injury.
Across four studies involving 250 patients, the researchers reported significant improvements across several neurocognitive domains.
The authors concluded that HBOT demonstrated potential in reducing neurocognitive impairment associated with TBI, while recommending larger trials and more standardised protocols.
View the 2025 research on PubMed →2026 Systematic Review & Meta-Analysis · 570 Participants
A Larger Analysis Adds to the Picture
A newer 2026 systematic review and meta-analysis brought together eight randomised studies involving 570 participants with traumatic brain injury.
The analysis found significant benefits in several specific areas, including computerised cognitive performance, executive function and processing speed, memory function and sleep quality.
The evidence was strongest in populations with mild traumatic brain injury. Not every outcome measured showed a significant benefit — PTSD symptoms, broader neurobehavioural symptoms and emotional distress, for example, did not show clear significant improvements in the pooled analysis.
That makes the findings particularly useful: rather than suggesting HBOT affects every symptom associated with TBI, the research is beginning to identify which neurological and cognitive domains may be most responsive.
View the 2026 research on PubMed →“The question is becoming more specific: not simply whether HBOT affects brain injury, but which areas of neurological recovery may respond most clearly.”
Taken together, these recent analyses add to a genuine body of human research around HBOT and traumatic brain injury.
The strongest recent findings are particularly interesting for people dealing with problems involving memory, attention, processing speed, executive function and other cognitive symptoms following brain injury.
What This Means
Why This Research Matters for Someone Living With Persistent Symptoms
One of the difficult things about concussion is that recovery does not always follow a simple timetable.
Some people recover relatively quickly. Others continue to experience cognitive fatigue, headaches, sleep disruption, difficulty concentrating, dizziness or reduced tolerance for work and exercise.
For someone in that position, the growing research into HBOT is significant because it provides both a physiological rationale and an increasing body of human clinical evidence for exploring its role after traumatic brain injury.
The relevant programme still depends on the person — including the nature of the injury, current symptoms, timing, medical history and other care already in place.
An Important Distinction
HBOT Is Not a Return-to-Play Test
For athletes, feeling better and being medically ready to return to contact sport are not the same thing.
Concussion can affect reaction time, balance, cognition and other neurological functions that matter enormously when someone returns to training or competition.
HBOT can be explored as part of the wider recovery picture, but it does not replace appropriate concussion assessment or a structured return-to-play process.
ReWell’s role is different: to provide safe, guided access to HBOT and help clients understand how it may fit within their wider recovery programme.
If you are exploring HBOT after concussion or brain injury, the next step is understanding which form of access makes sense for you.
Accessing HBOT in Ireland
Start in Clinic. Access HBOT at Home. Or Explore Long-Term Ownership.
ReWell provides several ways to access HBOT depending on how regularly you plan to use it and what works best around your recovery.
Try
Start in the ReWell Clinic
New to HBOT? Experience a session at our ReWell in Naas and Dublin clinics and speak with the team about how HBOT may fit within your wider recovery plan.
60 minute session €85 incl. VAT
Book an HBOT Session →Rent
Regular HBOT at Home
For people who want more regular access, ReWell provides home hyperbaric chamber rental with delivery and ongoing support across all 32 counties.
From €1,229/month incl. VAT
Explore HBOT Rentals →Own
Long-Term HBOT Access
ReWell also supplies hyperbaric chambers for people who want long-term access at home or for professional and clinical environments.
From €9,999 excl. VAT
Explore HBOT Chambers →
Guidance Matters
Your HBOT Programme, Guided by Davitt Meenaghan
ReWell’s HBOT programmes are guided by Davitt Meenaghan, IBUM-certified Hyperbaric Safety Officer.
“With neurological recovery, the question should never simply be ‘Can I use a chamber?’ It should be ‘Is HBOT suitable for me, and what is the right way to approach it?’”
Screening, chamber choice, pressure, safe operation and individual circumstances all matter — particularly when someone is exploring HBOT following concussion or traumatic brain injury.
Davitt helps clients understand their options and how HBOT may fit practically alongside the other care and rehabilitation already in place.
Talk to Davitt — Book a Free Discovery Call →Common Questions
HBOT, Concussion & Brain Injury FAQs
Is HBOT being researched for concussion?
Yes. HBOT has been studied in people with traumatic brain injury, including mild TBI. Recent systematic reviews and meta-analyses have reported significant findings in several cognitive areas, including memory, attention, executive function and processing speed.
What did the 2025 HBOT brain injury review find?
The 2025 systematic review and meta-analysis included four studies and 250 patients. It reported significant improvements across memory, attention, general cognition, executive function, information-processing speed and motor skills following HBOT.
What does the newer 2026 research add?
The 2026 meta-analysis included eight studies and 570 participants. It found significant improvements in computerised cognitive performance, executive function and processing speed, memory function and sleep quality. The evidence was predominantly drawn from people with mild traumatic brain injury.
Does HBOT treat every symptom after concussion?
No single recovery approach should be expected to affect every concussion symptom. The 2026 analysis, for example, found significant benefits in several cognitive domains but did not find clear significant effects for every neurobehavioural or emotional outcome measured.
Can HBOT clear an athlete to return to play?
No. HBOT is not a concussion assessment or return-to-play test. Decisions about returning to contact sport should remain with the appropriate medical professionals and follow a structured concussion-management process.
Can I try HBOT before renting a chamber?
Yes. New clients can start with an introductory HBOT session at ReWell in our Naas and Dublin clinics for €85 incl. VAT. This is a practical way to experience HBOT before considering more regular home access.
Can ReWell provide HBOT at home?
Yes. ReWell provides home hyperbaric chamber rental across all 32 counties, with options starting from €1,229 per month. Chamber ownership is also available for people wanting long-term access.
The Bottom Line
There Is Real Research Here — and It Is Continuing to Develop
HBOT for concussion and traumatic brain injury is not based on a single study or a theoretical mechanism alone.
There is now a genuine body of human research investigating how hyperbaric oxygen may influence neurological recovery, with recent systematic reviews reporting particularly interesting findings around memory, attention, executive function, processing speed and other cognitive outcomes.
At the same time, brain injury is complex. Symptoms, injury severity, timing and individual circumstances vary enormously from one person to another.
That is why the most useful question is not simply “Does HBOT work for concussion?”
It is:
Could HBOT be relevant to my recovery — and what would safe, appropriate access look like for me?
Explore Your Options
Considering HBOT After Concussion or Brain Injury?
Speak with ReWell about your circumstances, learn more about the research and understand the different ways you can access HBOT in Ireland.
This article is for general educational purposes and does not constitute medical advice. HBOT may not be suitable for everyone. Concussion and traumatic brain injury should be appropriately assessed and managed by qualified healthcare professionals. Screening and suitability are important before beginning HBOT.