Bryan Johnson’s HBOT Results: What 60 Sessions Did to His Body

The world’s most measured man just published his hyperbaric oxygen therapy results — and the data is remarkable.

Bryan Johnson doesn’t do anything halfway. The tech entrepreneur and founder of Blueprint — the rigorous anti-aging protocol that has made him arguably the most measured human being on the planet — recently completed 60 sessions of hyperbaric oxygen therapy (HBOT) and published his results.

For those unfamiliar, Johnson has spent years (and millions of dollars) systematically testing every therapy, supplement, and intervention known to science in his quest to reverse biological aging. His team of doctors and scientists measures everything. When Bryan Johnson says something works, it comes with receipts.

After achieving what he calls “elite-level biomarkers” over the past four years, Johnson and his team had struggled to find new therapies that could meaningfully move the needle.

HBOT did exactly that.

The Protocol

Johnson’s HBOT protocol was straightforward:

• Hard shell chamber at 2 ATA (atmospheres absolute — equivalent to being 33 feet underwater)
• 90-minute sessions, 5 days per week
• 100% oxygen delivered via mask (BIBS — built-in breathing system), cycling 20 minutes on, 5 minutes off
• 60 sessions completed within 90 days

The chamber itself maintains normal atmospheric oxygen (21%) inside — the 100% oxygen is delivered directly through the mask. This is an important safety distinction that also enables the therapeutic pressures needed for the results he achieved.

The Results

Inflammation: Eliminated

Chronic inflammation is the foundation of virtually every major disease. Before HBOT, Johnson’s inflammation markers were already in the top 5% of 18-29 year olds — impressive for a man in his 40s.

After 60 sessions? His systemic inflammation dropped to below detection limits.

His CRPm — an epigenetic biomarker proxy for inflammation — landed in the lowest 1%. In his words: “This is wild.”

Vascularization: 300% VEGF Increase

VEGF (vascular endothelial growth factor) drives the formation of new blood vessels. More blood vessels means better oxygen delivery to every tissue in your body — muscles, brain, organs, skin.

Johnson saw a 300% increase in VEGF. The downstream effect: his muscle oxygenation reached the same exercise power output at more than double the previous oxygenation levels.

Telomeres: Activity of a 12-Year-Old

Telomeres — the protective caps on your chromosomes — shorten as you age. They’re one of the most reliable markers of biological aging. When they get too short, cells become senescent and contribute to accelerated aging.

After 60 HBOT sessions, Johnson’s telomerase activity measured at 7.7% — equivalent to a 12-year-old.

This is consistent with a landmark clinical trial that demonstrated 20-38% increases in telomere length across multiple types of immune cells in adults over 64. The effects were sustained even 1-2 weeks after ending the protocol.

Brain Health: 28.6% Reduction in Dementia Marker

The phosphoprotein pTau217 is one of the most specific markers associated with Alzheimer’s disease. Levels above 0.18 pg/mL may indicate plaque accumulation in the brain.

Johnson’s pTau217 dropped from 0.14 to 0.10 pg/mL — a 28.6% reduction.

Lower pTau217 is associated with better preservation of memory, processing speed, executive function, and neuronal stability. Separately, clinical studies have shown HBOT improved vascular function and cognitive performance in elderly Alzheimer’s patients.

Microbiome: Complete Metabolic Rebalancing

The most striking finding: Johnson achieved complete elimination of metabolic imbalance in his gut — despite making no significant changes to his diet. HBOT alone reversed it.

Skin: Dramatic Visible Improvement

These numbers point to significant removal of advanced glycation end-products (AGEs) from the skin, likely driven by the improved vascularization.

Johnson’s own assessment: “Subjectively, I’ve never seen a more dramatic improvement in my skin quality than from these 60 HBOT sessions.”

The Science Behind It

HBOT isn’t new — it’s been used clinically for decades. The FDA currently approves it for treating carbon monoxide poisoning, supporting chronic wound healing in diabetics, recovery from radiation injuries, and sports injury rehabilitation.

What’s newer is the growing body of research connecting HBOT to longevity and rejuvenation:

• Telomere extension in healthy older adults (randomized clinical trial)
• Improved VO2 max — the gold standard for fitness and longevity — in both elite athletes (age 40-50) and healthy adults (age 64+)
• Cognitive improvement and reduced amyloid burden in Alzheimer’s models and patients
• Senescent cell reduction — fewer “zombie cells” that drive aging

The mechanism is elegant: increased pressure enhances the lungs’ ability to absorb oxygen, boosting oxygen concentration in every tissue. This supports healing, cellular repair, and the growth of new blood vessels.

What This Means

Bryan Johnson ranks HBOT as “one of the highest value health therapies I’ve done.” Coming from someone who has systematically tested virtually everything available to modern science, that’s a powerful endorsement.

The protocol he used — a hard shell chamber at 2 ATA with 100% oxygen via mask — is available today. It’s the same type of chamber used in the clinical trials that demonstrated telomere lengthening, VO2 max improvements, and cognitive benefits.

For anyone serious about longevity, recovery, brain health, or simply performing at their best — the data speaks for itself.

Interested in bringing clinical-grade hyperbaric oxygen therapy into your home or practice? [Explore Oxycell’s lineup of hard shell HBOT chambers →]

Have questions? [Book a consultation] or call us at (877) 750-0660.

Sources: Bryan Johnson’s Blueprint Protocol, published February 2026. Clinical studies referenced include peer-reviewed research on HBOT and telomere length, VO2 max, and cognitive function in older adults.

Photo: Bryan Johnson, founder of Blueprint. (Credit: Evening Standard)