By SANCTOUM Editorial
ew therapies in integrative medicine generate as much curiosity, or as much debate, as ozone therapy. Supporters describe it as one of the most versatile tools in regenerative medicine, capable of stimulating healing, improving circulation, reducing inflammation and enhancing cellular energy. Critics argue that while promising, many of its applications still require larger, high-quality clinical trials before they can become part of conventional medical practice.
So what exactly is ozone therapy? How does it work? Why is it widely used in countries such as Germany, Italy, Spain, Cuba and parts of Latin America, yet remains largely outside mainstream medicine in the United States? The answer is surprisingly complex.
WHAT IS OZONE?
Most people know ozone as the protective layer high above the Earth that shields us from harmful ultraviolet radiation. In medicine, however, ozone refers to something quite different. Medical ozone is a carefully controlled mixture of pure oxygen and a very small concentration of ozone gas (O₃), a molecule made of three oxygen atoms instead of the usual two (O₂).
Because the third oxygen atom is only loosely attached, ozone is highly reactive. The moment it comes into contact with blood or body fluids, it rapidly converts back into oxygen while producing a cascade of biological signalling molecules. Unlike many medications that remain active in the body for hours, ozone itself exists only for seconds. Its effects come from the biological responses it triggers.
A THERAPY WITH MORE THAN A CENTURY OF HISTORY
Although ozone therapy often appears to be a modern wellness trend, its medical history stretches back well over one hundred years. Following ozone’s discovery in the nineteenth century, physicians quickly recognised its remarkable disinfecting properties. By the late 1800s, it was already being investigated for medical use, and during the First World War it was used to disinfect wounds before antibiotics became widely available.
In 1896, inventor Nikola Tesla patented one of the first medical ozone generators, helping to standardise ozone production for therapeutic applications. Today, ozone therapy continues to be practised in many countries by physicians trained in its clinical use, particularly within integrative and regenerative medicine.
“Rather than supercharging immunity, ozone therapy may work by prompting the body to activate its own adaptive and repair responses.”
UNDERSTANDING HORMESIS: WHY A LITTLE STRESS CAN BE GOOD
One of the easiest ways to understand ozone therapy is through a biological principle known as hormesis. Hormesis describes the process whereby a small, carefully controlled stress stimulates the body to become stronger. Exercise is perhaps the clearest example. When you lift weights or run, you create microscopic stress and damage in muscle tissue, and the body responds by repairing those tissues and increasing their resilience over time. Cold plunges, fasting, heat therapy and high-intensity interval training work through a similar principle.
Ozone appears to act in much the same way. Rather than acting as a drug that directly suppresses symptoms, therapeutic ozone creates a brief oxidative signal that encourages cells to activate their own antioxidant systems, repair mechanisms and adaptive responses. Researchers believe this controlled oxidative stimulus is responsible for many of the biological effects observed during ozone therapy. For this reason, some practitioners describe ozone as “exercise for the cells.”
What Happens Inside the Body?
When medical ozone meets blood or body fluids, it disappears almost instantly.
During that reaction it produces signalling molecules—including reactive oxygen species and lipid oxidation products—that communicate with cells throughout the body.
These signals may influence several important biological systems.
Researchers have reported that ozone therapy can:
- stimulate the body’s antioxidant enzymes
- influence immune regulation
- reduce inflammatory signalling
- improve oxygen utilisation
- enhance microcirculation
- encourage tissue repair.
Importantly, these are indirect effects.
The ozone itself is gone within moments; the body’s response continues long afterwards.
The Endothelium: Protecting the Body’s Highway System
Every artery, vein and capillary in the body is lined by an extraordinarily thin layer of cells known as the endothelium.
Although only one cell thick, this delicate tissue regulates blood flow, oxygen delivery, immune activity and communication between organs.
Modern lifestyles place enormous pressure on endothelial health.
Smoking, chronic inflammation, high blood sugar, air pollution, heavy metals, poor diet and long-term stress can all impair endothelial function.
When the endothelium becomes damaged, circulation becomes less efficient, tissues receive less oxygen and chronic inflammation may develop.
Several studies suggest ozone therapy may improve endothelial function by increasing nitric oxide availability and supporting healthier blood vessel responses, although further large clinical trials are still needed to establish its long-term clinical benefits.
MITOCHONDRIA: RECHARGING THE CELL’S BATTERIES
If blood vessels are the body’s highways, mitochondria are its power stations. Every heartbeat, every thought and every movement depends on these tiny structures producing ATP, the energy currency of life. As we age, mitochondrial efficiency naturally declines.
Researchers investigating ozone therapy believe its biological signalling may stimulate mitochondrial activity, improve cellular metabolism and enhance energy production in some patients. This may help explain why many individuals receiving a course of ozone therapy report improved vitality, mental clarity and physical endurance. However, scientists emphasise that more controlled clinical studies are required to determine which patient groups benefit most and under which treatment protocols.
HOW IS OZONE THERAPY GIVEN?
Medical ozone is never administered by inhalation because ozone gas can irritate and damage lung tissue. Instead, physicians use carefully controlled medical techniques that may include:
- Major autohemotherapy, where a small amount of blood is mixed with medical ozone before being returned to the patient
- Local injections into joints or soft tissues for selected musculoskeletal conditions
- Ozonated oils or water for certain skin and wound applications
The method depends entirely on the condition being treated and the physician’s clinical judgement.
IS IT SAFE?
Like any medical treatment, the safety of ozone therapy depends heavily on correct administration. When performed by trained practitioners using recognised medical protocols, published reviews report a low incidence of adverse effects. Serious complications have generally been associated with incorrect administration techniques or inappropriate routes of delivery.
Patients considering ozone therapy should ensure their practitioner has formal medical training in ozone medicine and follows internationally recognised safety guidelines.
WHY IS IT STILL CONTROVERSIAL?
Despite decades of research and widespread international use, ozone therapy remains controversial. One reason is that the quality of evidence varies considerably depending on the medical condition being studied.
For some indications, such as certain chronic wounds, osteoarthritis and herniated discs, clinical evidence is growing and encouraging. For many other diseases, however, researchers agree that larger, well-designed randomised clinical trials are still needed before definitive conclusions can be reached.
Regulation also differs around the world. Some countries integrate ozone therapy into parts of their healthcare systems, while others, including the United States, have not approved it for routine medical use, citing insufficient evidence for broad therapeutic claims.
A BALANCED PERSPECTIVE
Medicine rarely advances in straight lines. History reminds us that many accepted therapies were once controversial, while others that were initially celebrated ultimately failed to withstand scientific scrutiny. Ozone therapy occupies an intriguing position between those possibilities.
The biological mechanisms are increasingly understood, the scientific literature continues to expand, and clinical experience accumulated over decades suggests meaningful potential in selected areas of regenerative medicine. At the same time, many experts continue to call for larger, more rigorous clinical trials before ozone therapy can be fully integrated into evidence-based conventional care.
For patients, the most sensible approach is informed curiosity. As longevity medicine shifts from simply treating disease toward optimising resilience, cellular health and healthy ageing, therapies such as ozone are likely to remain at the centre of scientific discussion for years to come because they raise one of medicine’s most important questions:
CAN WE ENCOURAGE THE BODY TO HEAL ITSELF MORE EFFECTIVELY?
