Hyperbaric oxygen therapy (HBOT) is a treatment that increases blood oxygen levels to boost wound healing and clear bacterial infections. Recent studies and doctors’ clinical experiences suggest that it may be useful for treating long COVID and COVID-19 vaccine injury.
“When I first heard about [HBOT] I thought, ’this is goofy,'” said Dr. Paul Marik, co-founder of Front Line COVID-19 Critical Care Alliance (FLCCC).
Then, Marik encountered a competitive cyclist patient who became bedridden after COVID-19 vaccinations.
“He was completely incapacitated,“ he said. ”He went for hyperbaric oxygen, [and] within about five or six sessions, [he] was back on his bicycle.”
Marik told The Epoch Times that some patients who have spike-protein-induced injuries have responded particularly well to hyperbaric oxygen.

How Does HBOT Work?
HBOT involves patients breathing in 100 percent pure oxygen in a chamber at an atmospheric pressure higher than normal sea level (1 standard atmosphere).Since oxygen normally only makes up about 21 percent of air, the increased pressure of pure oxygen further increases oxygen levels in the blood.
Depending on the pressure administered, blood oxygen levels can be increased to three times the normal level.
The treatment is mostly used for wound healing, including both internal and external wounds.
Cells need oxygen to function. Mitochondria use oxygen to break down sugars into energy, so increased blood oxygen levels drive tissue growth and regeneration. Increased oxygen levels also clear bacterial infections.
HBOT is currently approved as a treatment for 15 different wounds and health conditions, including carbon monoxide poisoning, tissue damage, blood loss, burns, skin grafts, soft tissue infections, and intracranial abscesses.
Outside of the United States, Russia lists 70 diseases that can be treated by HBOT, China lists 49, and Japan lists 33.
Dr. Paul Harch, a renowned HBOT expert and founder of Harch Hyperbarics, said at the FLCCC conference in Kissimmee, Florida, that a major underlying pathology of wounding is inflammation; HBOT repairs wounding by reducing inflammation and promoting regrowth.
Since inflammation is an underlying pathology for many diseases, this makes HBOT conceptually applicable for various conditions, even wounding from diabetes, which is a metabolic disease driven by inflammation.
Harch said he has treated 90 to 100 different conditions with HBOT, with the majority of the medical conditions being neurological injuries.

HBOT Changes Gene Expression
HBOT reduces inflammation by influencing epigenetics.Epigenetics are factors that change gene activity. Depending on environmental factors including stress, diet, drugs, and treatments, certain genes can be activated or suppressed.
“Surprisingly, it is the increased pressure, rather than the increase in the concentration of dissolved oxygen, that appears to mediate these effects,” the FLCCC doctors wrote in their treatment recommendations.
For HBOT, the higher the oxygen pressure, the greater the change in gene expression and the higher the general benefit.
Therefore the FLCCC recommends the use of HBOT at a high atmospheric pressure. But treatment regimens need to be monitored by a clinician to prevent oxygen toxicity.
HBOT increased the expression of anti-inflammatory genes and reduced the activity of pro-inflammatory genes.
Since cells exposed to pure oxygen at normal atmospheric pressure had “minimal change” in their gene expression, this demonstrated that pressure is the key player in the overall therapy.
The authors of the study exposed rats to normal air and pure oxygen at normal atmospheric pressure and higher pressures. The data show that in rats, an increase in oxygen levels caused an increase in gene expression.

Physiological Changes From Hyperbaric Oxygen
HBOT is currently recommended as a third-line treatment for post-COVID vaccine symptoms, coined under the umbrella term of post-COVID vaccine syndrome.FLCCC doctors reason that both long COVID and post-COVID vaccine symptoms are driven by chronic exposure to spike proteins, which promote immune dysregulation and inflammation. It, therefore, makes conceptual sense that HBOT may work as a potential treatment.
Mitochondria are responsible for breaking down the sugar we ingest through our food and converting it into energy and uses oxygen as a key reactant of this biochemical process.
During inflammation experienced in long COVID and post-COVID vaccine syndromes, the spike proteins can stress the mitochondria in the cell, leading to reduced energy production and more production of damaging radical species. The extra oxygen provided through HBOT treatment gives ample material for use by the mitochondria to increase energy production for the body.
HBOT also induces the release of stem cells and tissue growth factors.
Harch has had successes in treating wounds in the brain, including a near-reversal of brain damage in a drowned 2-year-old girl in 2017.
The girl had suffered from a deep brain injury and had “no speech, gait, or responsiveness to commands with constant squirming and head shaking” he said.

HBOT for Spike-Protein-Induced Diseases
Studies on HBOT therapies have shown them to be beneficial against COVID-19 and long COVID. There’s much literature on HBOT that find positive outcomes in treating COVID-19 infections.All of the COVID-19 patients presented low oxygen levels, rapid breathing, and inflammatory markers. After one to six sessions of HBOT, inflammatory markers fell and the rapid breathing ceased.
“Most importantly, HBOT potentially prevented the need for mechanical ventilation,” the authors wrote.
Patients treated with HBOT had improved blood oxygen levels in three days, compared to the nontreatment group, whose levels improved in nine days.
The authors noticed improvements in the HBOT treatment group in global cognitive function, attention, and executive function, with significant improvements in energy, sleep, mental health, and reduced pain.
Brain scans of these patients also showed improved blood flow in certain areas of the brain.
The FLCCC recommends HBOT as a third-line treatment, as it’s considered to be a treatment that “may be lifesaving for one patient and totally ineffective for another.”
Marik noted that the high cost of the therapy and the differences in pathophysiology may make the treatment not suitable for everyone. He currently recommends HBOT only for severe neuropathologies in patients suffering from post-vaccine syndromes, particularly peripheral neural pain. Contraindications for this treatment include people with untreated pneumothorax.