Bryan Johnson, the man spending millions to reverse his biological age, calls hyperbaric oxygen therapy “the most efficacious longevity therapy I’ve done since starting this endeavor.”
That’s a massive statement from someone whose Blueprint protocol includes hundreds of supplements, strict diet, exercise, red light therapy, and dozens of other interventions. So what exactly is he doing, what chamber does he use, and what results did he get?
Bryan’s HBOT Chamber: HPO Tech ZEUGMA
Bryan uses the ZEUGMA monoplace hyperbaric chamber made by HPO Tech Hyperbaric Solutions, a Turkish manufacturer with 15+ years in hyperbaric chamber design.
It’s a medical-grade hard-shell unit installed in his home.
ZEUGMA Specs
| Spec | Detail |
|---|---|
| Type | Hard-shell monoplace (seated) |
| Pressure | 2.0 ATA |
| Oxygen delivery | BIBS mask (100% O2) + free-flow option |
| Controls | External 21" + internal 16" touchscreen |
| Windows | Oversized acrylic side and front panels |
| Weight capacity | 225 kg |
| Design | Modular (3 sections, each under 80 cm, fits through standard doorways) |
| Certifications | CE, ISO, PVHO, PED, ASME, UKCA, NFPA |
| Price | ~$132,595 |
Bryan chose a home setup because at 5 sessions per week, 90 minutes each, commuting to a clinic would be impractical. He effectively moved his office into the chamber, working on his laptop during sessions.
Why HPO Tech?
HPO Tech manufactures all key components in-house at their Istanbul facility. The ZEUGMA features custom automation protocols, entertainment integration, and a Tesla-style touchscreen interface. Their chambers range from 1.5 to 6.0 ATA across monoplace and multiplace models.
Worth noting: HPO Tech is an official partner and sponsor of Bryan’s Don’t Die Summit, attending all three 2025 events (Los Angeles, New York, Miami). This commercial relationship is worth keeping in mind when evaluating his endorsement.
Bryan’s Exact HBOT Protocol
The 90-Day Experiment (November 2024 – January 2025)
Bryan started his HBOT experiment in November 2024 and completed it in January 2025:
| Parameter | Detail |
|---|---|
| Total sessions | 60 |
| Frequency | 5 sessions per week |
| Session length | 90 minutes |
| Pressure | 2.0 ATA (equivalent to 33 feet underwater) |
| Total time in chamber | 4,580 minutes / 76 hours |
| Duration | ~90 days |
Oxygen Cycling Protocol
Bryan doesn’t just sit in a pressurized chamber breathing ambient air. He uses an oxygen cycling method:
- 20 minutes breathing 100% oxygen via BIBS mask
- 5-minute air break breathing regular ambient air
- Repeat throughout the 90-minute session
The chamber itself fills with ambient air (21% oxygen). The 100% oxygen is delivered only through the face mask. This approach reduces oxidative stress risk, particularly the risk of cataracts associated with prolonged pure oxygen exposure.
Technical Challenge He Ran Into
The initial oxygen concentrator only reached 92% purity. Bryan needed 100%, so he retrofitted the entire system with medical-grade oxygen canisters. A reminder that equipment quality matters at this level.
Current Routine (2025)
After the initial experiment, Bryan made HBOT a daily practice. As of mid-2025, he reported completing 93 sessions over 200 days, totaling 8,723 minutes (145 hours).
HBOT is now the final step in his 4:30 AM – 10:00 AM morning routine, slotted after breakfast, which follows red light therapy, sauna, and showering. He’s described it as the “biggest new addition” to his protocol.
His proposed maintenance plan going forward: 20 sessions every three months to sustain benefits without diminishing returns.
Results & Biomarker Data
This is where it gets interesting. After 60 sessions, Bryan shared detailed biomarker data. His own team tracks everything obsessively, so these aren’t vague claims. They’re specific measurements.
Inflammation
| Marker | Result |
|---|---|
| hs-CRP (systemic inflammation) | Dropped to undetectable levels (lowest 1%) |
Bryan called this “wild.” High-sensitivity C-reactive protein is one of the most important markers for chronic disease risk. Getting it to undetectable is exceptional.
Telomeres & Aging
| Marker | Result |
|---|---|
| Telomere length | Extended 2.6% (10.3 → 11.4 kb) |
| Telomere growth | +300 base pairs (~equivalent to 10 years of reversal) |
| Telomerase activity | Comparable to a 12-year-old |
Telomeres are the protective caps on chromosomes that shorten with age. Lengthening them is one of the holy grails of longevity research. A 300-base-pair increase is significant.
Vascular Health
| Marker | Result |
|---|---|
| VEGF (vascular endothelial growth factor) | 300% increase |
| Blood vessel count in skin | +40.9% |
| Muscle oxygenation | Improved during exercise |
VEGF drives angiogenesis, the creation of new blood vessels. A 300% increase means significantly improved blood flow and oxygen delivery throughout the body.
Gut Health
| Marker | Result |
|---|---|
| Short-chain fatty acids | 250% increase |
| n-Butyrate | 290% increase |
| Akkermansia (beneficial bacteria) | 1,000% increase |
| Gut metabolic imbalance | Completely eliminated |
This was unexpected. HBOT appears to have dramatically improved Bryan’s gut microbiome composition. Akkermansia is associated with metabolic health, reduced inflammation, and healthy weight maintenance.
Skin & Collagen
| Marker | Result |
|---|---|
| Skin UV damage | Improved >10% |
| Collagen fiber density | +12.8% |
| Elastic fiber length | +144% |
Bryan posted a dedicated thread calling HBOT a “glow-up” for “whole-body skin rejuvenation,” describing his skin as “stronger, firmer, bouncier, and glowing.”
Brain Health
| Marker | Result |
|---|---|
| Alzheimer’s marker (PTAL127) | 28.6% decline |
A decrease in this dementia-related marker is a promising sign for long-term cognitive health.
Full Results Summary
| Category | Marker | Change |
|---|---|---|
| Inflammation | hs-CRP | Undetectable |
| Aging | Telomere length | +2.6% (+300 bp) |
| Aging | Telomerase activity | Age-equivalent of 12 |
| Vascular | VEGF | +300% |
| Vascular | Skin blood vessels | +40.9% |
| Gut | Akkermansia | +1,000% |
| Gut | Short-chain fatty acids | +250% |
| Gut | n-Butyrate | +290% |
| Gut | Metabolic imbalance | Eliminated |
| Skin | Collagen density | +12.8% |
| Skin | Elastic fiber length | +144% |
| Skin | UV damage | >10% improvement |
| Brain | Alzheimer’s marker | -28.6% |
The Backstory: From Skeptic to Believer
Here’s what makes this more interesting: Bryan’s own Blueprint team initially reviewed the HBOT scientific literature and concluded the evidence didn’t meet their implementation threshold. The research on telomere elongation and senescent cell reduction wasn’t strong enough for them to recommend it.
Bryan decided to run his own experiment anyway. After seeing his personal results, he reversed course entirely, calling HBOT the most effective therapy he’s ever done.
This pattern (establishment skepticism followed by dramatic personal results) is exactly why his endorsement carries weight in the biohacking community. He didn’t start as a believer.
Important Caveats
Before you rush to buy a hyperbaric chamber, some context:
This is a self-experiment (n=1) with an extraordinary baseline health regimen. The results haven’t been peer-reviewed, and Bryan’s outcomes may differ from what the average person would experience.
Commercial relationship. HPO Tech sponsors Bryan’s Don’t Die Summit and provides his equipment. Worth acknowledging as a financial relationship.
Bryan’s baseline is unusual. He already follows one of the most extreme health optimization protocols on the planet. His body may respond differently to HBOT than the average person’s.
Medical risks exist. HBOT can cause ear pain from pressure changes, temporary vision changes, rare oxygen toxicity, fatigue, headaches, and sinus pressure. Bryan himself said: “Before you do HBOT, consult your doctor as treatments may be unique to your conditions.”
The science is early. HBOT is FDA-approved for 14 specific medical conditions like wound healing and decompression sickness. The longevity research is promising but still being established.
What This Means for You
Bryan’s ZEUGMA chamber costs ~$132,595. That’s out of reach for most people. But the core therapy, breathing concentrated oxygen at elevated pressure, is available at a range of price points.
More Accessible Options
Clinic sessions are the easiest entry point. Independent clinics charge $100–$400 per session, and many offer package discounts for 20–40 sessions.
Home soft-shell chambers start at $4,495 for a Newtowne A4-27. These operate at 1.3–1.5 ATA (lower than Bryan’s 2.0 ATA) but are the most practical option for regular home use.
Hard-shell home chambers like the OxyRevo Quest30 at ~$25,500 reach 2.0 ATA, the same pressure Bryan uses, at a fraction of the ZEUGMA’s price.
Key Differences from Bryan’s Setup
| Factor | Bryan’s Setup | Accessible Alternative |
|---|---|---|
| Chamber | HPO Tech ZEUGMA ($132,595) | OxyRevo Quest30 (~$25,500) or clinic visits |
| Pressure | 2.0 ATA | 1.3–2.0 ATA depending on chamber |
| Oxygen | 100% medical-grade via BIBS mask | 24–95% via concentrator or clinic supply |
| Frequency | Daily, 90 minutes | 2–5x/week based on budget and availability |
| Monitoring | Full biomarker panel tracking | Basic wellness monitoring |
The research Bryan cited (particularly the Tel Aviv University telomere study) used similar protocols to his: 2.0 ATA, 90 minutes, 5 days per week. If you want to replicate his approach as closely as possible, a hard-shell chamber at 2.0 ATA is the minimum.
For general wellness and recovery benefits, soft-shell chambers at 1.3–1.5 ATA still offer meaningful results at a much lower cost and commitment level.
Break-Even: Clinic vs. Buying
If you’re inspired to try Bryan’s frequency (5 sessions per week), buying makes financial sense fast. At $200/session, you’d spend $4,000/month at a clinic. A $10,000 soft-shell chamber pays for itself in under 3 months.
Bottom Line
Bryan Johnson’s HBOT results are the most detailed public dataset we have from a serious self-experimenter. The biomarker improvements, particularly in inflammation, telomere length, and gut health, are striking.
Whether these results translate to the average person remains to be seen. But his experiment has put HBOT on the map as a longevity therapy worth watching.
The good news: you don’t need $132,595 to try it. Start with clinic sessions to see how your body responds, then consider a home chamber if you’re committed to regular use.
Disclaimer: This information is for educational purposes only. HBOT should be administered under proper medical supervision. Consult healthcare professionals before starting any HBOT protocol.