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Leading Edge Medicine – Why CO2 Can Be A Life Saver For Cancer

Published on July 20, 2023

We are at the leading edge of medicine, but this is low-tech inexpensive technology involving carbon dioxide, not dangerous medication from pharmaceutical companies. If oxygen is recognized as a lifesaver, especially for cancer patients, then a no-hassle way of safely flooding the body with it should be greatly appreciated.

I am talking about flooding the body with pure CO2 gas, which we can now do. One can stick a person in a pressure suit and pump in pure CO2, which will go through the skin. That is available today, but tomorrow it is hoped that an inhalation device will be created to make it even easier to administer.

CO2 is an excellent instant-acting medicine, instantly dilating all the blood vessels and even the capillaries blasting oxygen everywhere. As CO2 rises, so does oxygen. It is not just the increased blood flow. Scientists have seen for 80 years that CO2 and O2 levels always track up and down with each other.

What quicker method of flooding the body with oxygen and increased blood flow than flooding the body with CO2? We have known since 1940 that under clinical conditions, low oxygen, and low carbon dioxide generally occur together. Therapeutic increase of carbon dioxide, by inhalation of this gas diluted in air, is often an effective means of improving the oxygenation of the blood and tissues. (Henderson, Y. Carbon Dioxide. Article in Encyclopedia of Medicine. 1940)

“In the presence of a large amount of carbon dioxide, the hemoglobin molecule changes its shape slightly, along with its electronic balance, in a way that favors the release of oxygen. The opposite happens in the presence of a high oxygen concentration and a lower carbon dioxide concentration,” writes Dr. Ray Peat. However, most doctors ignore CO2, which is terrible because lowered carbon dioxide levels in the blood lead to reduced oxygenation of the cells, which leads to toxic accumulation and increased acidity and, thus, a further loss of oxygen to the cells.

Possibly The Most Powerful Cancer Treatment on the Planet

Biologist Dr. Ray Peat tells us, “Breathing pure oxygen lowers the oxygen content of tissues; breathing rarefied air, or air with carbon dioxide, oxygenates and energizes the tissues; if this seems upside down, it’s because medical physiology has been taught upside down. And respiratory physiology holds the key to the special functions of all the organs, and too many of their basic pathological changes.”

Bicarbonate increases tumor pH and also inhibits spontaneous metastases, so we know carbon dioxide will do the same thing. Bicarbonate and CO2 therapy are the same thing. Taking baking soda is a potent and valuable medicine because it turns to CO2 when in contact with either the lemon in the glass or stomach acid, which instantly transforms bicarbonate into its twin sister, CO2.

Medical Miracle's with bicarbonates book image

I have written books about the use of bicarbonate in cancer treatment and will feature this article in the third edition of my bicarbonate work, which I am presently working on. This essay should get many thinking along the lines of a significant discovery, based on hard-core physiology, that suggests the most powerful way of treating cancer would be to saturate a patient’s body in CO2 gas. When we slam the body with CO2, we slam the cells with oxygen.

Hypocapnia (low CO2 levels in the blood)

To further our understanding of what happens when we flood the body with CO2, we need to look at the opposite, when CO2 levels in the blood are low, which is an all too common chronic condition in modern man.

It is crucial to see that hypocapnia (low CO2 levels in the blood) constricts blood vessels and leads to decreased perfusion of all vital organs. In emergencies, when these conditions are extreme, the organs and tissues of the body are not receiving an adequate flow of blood. In addition, it is essential to know that hypoxia suppresses the immune system and, when combined with lower oxygen transport via red blood cells, explains why COVID vaccinated are experiencing explosions in aggressive cancers.

Hypoxia supports tumor growth and interferes with effective radiation and chemotherapy. Hypoxia incapacitates several different types of immune effector cells, enhances the activity of immunosuppressive cells, and provides new avenues which help “blind” immune cells to the presence of tumor cells.[i] Hypoxia is the enemy of anti-tumor immune therapies. Oxygenation reduces tumors’ escape from immune surveillance and response.


Dr. Ying Xu, professor of bioinformatics and computational biology at the Franklin College of Arts and Sciences, is not the first to say that a long-term lack of oxygen in cells is the key driver of cancer growth.

Decades ago, Dr. Warburg said, Cancer, above all other diseases, has countless secondary causes. Almost anything can cause cancer. But, even for cancer, there is only one prime cause. The prime cause of cancer is the replacement of the respiration of oxygen (oxidation of sugar) in normal body cells by fermentation of sugar. In every case, during the cancer development, the oxygen respiration always falls, fermentation appears, and the highly differentiated cells are transformed into fermenting anaerobes, which have lost all their body functions and retain only the now useless property of growth and replication.”

“We’ve not only shown that men do worse if they have low oxygen levels (hypoxia) in their prostate cancer, but that they also do worse over a shorter period of time,” says Dr. Michael Milosevic, radiation oncologist in the PMH Cancer Program, UHN. “These patients seem to develop cancer recurrence within only a few years of completing treatment.”

Oxygen pulls the rug out from under cancer cells and tumors by removing the fundamental condition that makes them virulent. Bicarbonates do the same thing, so using oxygen and bicarbonate together is lethal to cancer cells. Research scientists from the Cancer Research UK–MRC Gray Institute for Radiation Oncology & Biology at the University of Oxford have discovered that oxygen makes cancer cells weak and less resistant to treatment. The only safe way to use oxygen at high enough levels to kill all cancer cells is when used with carbon dioxide.

Scientists at the University of Colorado Cancer Center said, “It seems like a tumor deprived of oxygen would shrink. However, numerous studies have shown that tumor hypoxia, in which portions of the tumor have significantly low oxygen concentrations, is linked with more aggressive tumor behavior and poorer prognosis.”

Northeastern University researchers have found that inhaling supplemental oxygen—40 to 60% oxygen as opposed to the 21% oxygen in the air—can weaken immuno-suppression and awaken anti-tumor cells. The new approach, some 30 years in the making, could dramatically increase the survival rate of cancer patients, killing some 8 million people each year. The breakthrough findings were published in Science Translational Medicine.

Dr. Michail Sitkovsky, an immune physiology researcher at Northeastern, found that supplemental oxygenation inhibits the hypoxia-driven accumulation of adenosine in the tumor microenvironment and weakens immunosuppression by unleashing anti-tumor T lymphocytes and natural killer cells.

“Breathing supplemental oxygen opens up the gates of the tumor fortress and wakes up ‘sleepy’ anti-tumor cells, enabling these soldiers to enter the fortress and destroy it,” explained Sitkovsky, the Eleanor W. Black Chair, and Professor of Immunophysiology and Pharmaceutical Biotechnology in the Bouvé College of Health Sciences’ Department of Pharmaceutical Sciences.

Immunophysiology researcher Michail Sitkovsky and a researcher at laboratory image

Hatfield et al. Tell us that T cells avoid going into the hypoxic areas of tumors. The authors overcome this problem in mice with lung tumors by having the animals breathe supplementary oxygen. They had a higher oxygen concentration throughout the body, improving the oxygenation inside the tumors, allowing immune cells to enter and attack them, and extending the animals’ survival.

pH is the Pivot Point

“Studies conducted at the University of Bari in Italy demonstrated that a hallmark of all tumors, regardless of their origin or background, is their acidic environment. Tumor progression increased with an acidic pH and hypoxia, or a low oxygen level,” writes Dr. Veronique Desaulniers. The perturbation in pH dynamics rises early in carcinogenesis and is one of the most common pathophysiological hallmarks of tumors.”

Blood’s pH comes into play because CO2 concentration helps determine pH. Increasing pH from 4.0 pH to 5.0 pH increases oxygen molecules in a liquid by ten-fold. Each whole number increases tenfold again, so 4.0 pH to 6.0 pH increases oxygen by 100 times, and raising pH from 4.0 to 7.0 pH increases oxygen levels by 1,000 times.


Over the oxygen supply of the body carbon
dioxide spreads its protecting wings.
Friedrich Miescher
Swiss physiologist, 1885

Though the BodyStream dry CO2 Bath is not explicitly tested as a cancer treatment, looking at their testimonials gives one an idea of how powerful this treatment can be. One said, “The ecstasy lasted about 12 hours and was one of the most extraordinary things I’ve ever experienced. For some reason, my body/mind reacted similarly to a drug. In a good way, but it was very intense.”

Another said, “The pain is gone after 30 years of tight muscles and fibromyalgia pain. I feel free in my body after the carbon dioxide bath, and the feeling of relaxation is incredible. Two days after the bath, I am still free from pain and very relaxed, although not as exceptionally calm as immediately afterward. The circulation in my usually cold hands has improved a lot. I know that the pain may come back, but it has been fantastic to experience the feeling of a pain-free body.” I mention these non-cancer testimonials to illustrate the high impact of this type of administration of CO2.

“Rapidly growing tumors with poorly formed vasculature have low oxygen levels, and limited oxygen availability results in a hypoxic microenvironment. Patients with high levels of tumor hypoxia have a significantly worse prognosis than patients with low levels. Thus, targeting tumor hypoxia in prostate cancer can potentially improve patient response to treatment and overall survival.”

Enough carbon dioxide is essential in preventing an excessive and maladaptive stress response. A deficiency of carbon dioxide (such as can be produced by hyperventilation or by the presence of lactic acid in the blood) decreases cellular energy (as ATP and creatine phosphate) and interferes with the synthesis of proteins (including antibodies) and other cellular materials. Flooding the body with CO2 would quickly, even instantly, reverse this condition.

Dr. Ray Peat says, “Breathing too much oxygen displaces too much carbon dioxide, provoking an increase in lactic acid; too much lactate displaces oxygen and carbon dioxide. Lactate itself tends to suppress respiration. Oxygen toxicity and hyperventilation create a systemic deficiency of carbon dioxide. This carbon dioxide deficiency makes breathing more difficult, impairs the heart’s ability to work, and increases the resistance of blood vessels, impairing circulation and oxygen delivery to tissues. Circulation is improved in conditions that permit greater carbon dioxide retention, and the heart works more effectively. Carbon dioxide inhibits the production of lactic acid, and lactic acid lowers carbon dioxide’s concentration in various ways.”

[i] Int J Hyperthermia. 2010; 26(3): 232–246. Hypoxia-Driven Immunosuppression: A new reason to use thermal therapy in the treatment of cancer?

Hi, I'm Dr. Mark Sircus, AC., OMD, DM (P), a doctor and writer of more than 23 books that have sold over 80,000 copies all over the world. My best-selling book is "Sodium Bicarbonate: Rich Man's Poor Man's Cancer Treatment" which has been translated into Chinese, Russian and Spanish.

On my website there are hundreds of free articles, but if you need some personalized help, you can make a consultation.

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