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Illustration of the Breathe library: shelves of research papers on hyperbaric oxygen and red light

The Breathe Library

A little curiosity. A lot of research.

Studies from around the world, organised by condition and purpose. Find what matters to you, understand the evidence and explore the science behind what we do.

Shhhh. Curious minds at work.

Popular conditions

The conditions members ask us about most.

Long COVID and post-viral fatigueModerate evidence · 3 papers Concussion and brain injuryModerate evidence · 3 papers Fibromyalgia and chronic painEarly evidence · 2 papers SleepEarly evidence · 3 papers Wound and tissue healingModerate evidence · 2 papers

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Every condition we hold

All Recovery Brain Energy & sleep Pain & inflammation Performance

Energy & sleep

Alpha-Stim and cranial electrotherapy stimulation

Evidence

Early

A 2014 trial reported large gains. A 2018 review rated the evidence low-strength.

Pain & inflammation

Bladder pain and interstitial cystitis

Evidence

Early

A small sham-controlled trial reported less pain and urgency in two thirds treated.

Recovery

Bone health and healing

Evidence

Early

A small trial in early hip avascular necrosis reported less pain at seven years.

Recovery

Cancer care and radiation recovery

Evidence

Moderate

Used for tissue damaged by radiotherapy, not as a cancer treatment.

Brain

Cognitive ageing

Evidence

Early

Trials in healthy older adults reported better attention and brain blood flow.

Brain

Concussion and brain injury

Evidence

Moderate

Trials in people with symptoms months after head injury reported improvements.

Pain & inflammation

Crohn's disease and ulcerative colitis

Evidence

Moderate

Two sham-controlled trials reported higher remission in ulcerative colitis flares.

Pain & inflammation

Endometriosis

Evidence

Animal only

No human trials yet. Two animal studies reported smaller implants.

Recovery

Fertility and the womb lining

Evidence

Early

A 2023 matched study reported a thicker womb lining and a higher pregnancy rate.

Pain & inflammation

Fibromyalgia and chronic pain

Evidence

Early

The main trial reported reduced pain and changes in brain activity.

Energy & sleep

Long COVID and post-viral fatigue

Evidence

Moderate

The largest trial reported better attention, energy and sleep after 40 sessions.

Pain & inflammation

Lyme disease and co-infections

Evidence

Early

The best-known series was uncontrolled and published only as an abstract.

Energy & sleep

ME/CFS and chronic fatigue

Evidence

Early

Small uncontrolled studies reported lower fatigue scores after a course of sessions.

Performance

Red light and exercise recovery

Evidence

Early

Targeted light has trials behind it. Whole-body panels do not yet.

Recovery

Red light and hair

Evidence

Moderate

Scalp-contact device trials reported higher hair counts. A standing panel is a lower dose.

Recovery

Red light and near-infrared (photobiomodulation)

Evidence

Moderate

Low-dose red and near-infrared light. Strongest evidence in oral mucositis.

Recovery

Red light and oral mucositis in cancer care

Evidence

Strong

In international cancer-care guidelines for preventing severe mouth ulcers.

Recovery

Red light and skin

Evidence

Moderate

Controlled trials reported denser collagen and smoother skin over weeks.

Energy & sleep

Red light and sleep

Evidence

Early

One small trial reported better sleep scores. Whole-body evidence is thin.

Recovery

Red light and wound healing

Evidence

Moderate

Trials in diabetic foot ulcers reported higher odds of complete healing.

Pain & inflammation

Red light for joint and muscle pain

Evidence

Moderate

Placebo-controlled trials reported lower pain in knee osteoarthritis and neck pain.

Brain

Red light, mood and cognition

Evidence

Early

The best-designed trial of light to the forehead found no difference from sham.

Energy & sleep

Sleep

Evidence

Early

Studies have measured sleep before and after hyperbaric oxygen and Alpha-Stim.

Energy & sleep

Sleep apnoea

Evidence

Early

Researchers are asking whether oxygen under pressure could help sleep apnoea. The studies are very early.

Energy & sleep

Sleep, stress and anxiety

Evidence

Early

American sham-controlled trials of Alpha-Stim have measured anxiety, low mood and sleep.

Performance

Sports recovery

Evidence

Early

Results are mixed. Several trials reported less soreness and faster strength recovery.

Recovery

Wound and tissue healing

Evidence

Moderate

The longest-established use, with the strongest evidence in diabetic foot ulcers.

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The papers in this library are published research shared for information. They are not medical advice. If you have a diagnosed condition, talk to your doctor before booking.