HBOT Benefits: What the Newest 2026 Research Actually Shows

1. Fibromyalgia: the strongest new signal

• The HOTFy randomised cross-over trial (BMJ Open, 2026) enrolled 56 women with fibromyalgia; HBOT at 2.3 ATA for 90 minutes, five times weekly for eight weeks (32–40 sessions) on top of standard care.^[1]
• vs standard care alone over the same 8 weeks: pain fell 54.0% vs 33.5%; fibromyalgia impact (FIQR) fell 31.1% vs 14.4%; physical quality of life rose 39.1% vs 14.8%. Within-group effect sizes for pain were large (Cohen's d 2.5–2.7). Benefit tracked exposure — after sessions stopped, some gains drifted back toward baseline.

2. Diabetic foot ulcers: faster healing, fewer amputations

• Randomised controlled study, 94 patients, HBOT + standard care (IV antibiotics, wound care, glycaemic control) vs standard care alone.^[2]
• Mean treatment time 10.1 ± 4.6 days vs 15.1 ± 7.8 days; amputation rate 4.6% vs 11.7%. Infection status and granulation tissue growth also better with HBOT (p < 0.001).

"Wound healing is where hyperbaric oxygen has the deepest, longest-standing evidence base — and the newest data continues to point the same direction."

3. Compromised tissue: salvage rates

• 2026 systematic review and meta-analysis, five studies, 409 patients (75 receiving HBOT), ischaemic complications after immediate breast reconstruction; typically 10–20 sessions at 2.0–2.5 ATA started within the first 10 postoperative days.^[3]
• Pooled flap salvage 82% (95% CI 72–90%); pocket salvage 78% (95% CI 65–88%); infections 3%; adverse events mild and infrequent. Authors rate certainty as LOW — these were observational studies, not randomised trials.

4. Exercise recovery: a mild-pressure finding

• Randomised trial, 34 physical-education students; blood-flow-restricted squats to induce fatigue, then 60 minutes at 1.3 ATA vs 60 minutes passive rest.^[4]
• HBOT group showed significantly lower blood lactate and perceived exertion, plus EEG and surface-EMG shifts consistent with faster central and peripheral recovery. Small, single-session and low-pressure — but a clean signal for the sports-recovery use case.

Where HBOT evidence is still thin

• A 2026 systematic review of non-pharmacological therapies for sleep disturbance after traumatic brain injury found the HBOT trials too few, too small and too heterogeneous to draw conclusions — and flagged a higher rate of mild ear barotrauma vs sham (relative risk 2.66).^[5]
• A community-delivered long COVID pilot reported improvements in fatigue, breathlessness and quality of life, but was uncontrolled and explicitly preliminary.^[6]

Considering HBOT?

The pattern across the 2026 literature is consistent: hyperbaric oxygen works best as a structured, physician-supervised course matched to a specific clinical goal — not as a one-off. Pressure, session length and total session count all vary by indication, which is exactly why protocol design matters.