If Cancer Begins in the Mitochondria, Should We Restore Mitochondrial Health?

For nearly a century, the prevailing theory has held that cancer begins with mutations in the cell’s DNA, which resides primarily within the cell’s nucleus. From this perspective, cancer is fundamentally a genetic disease, and most research has focused on identifying and targeting those genetic mutations.

But over the past several decades, a growing number of scientists have challenged that assumption.

Among the most prominent is Dr. Thomas N. Seyfried, Professor of Biology at Boston College and author of the landmark book Cancer as a Metabolic Disease. After more than three decades studying cancer metabolism, Dr. Seyfried has proposed a fundamentally different explanation for the origin of cancer.

Rather than beginning in the nucleus, he argues that cancer begins with damage to the cell’s mitochondria, the tiny organelles responsible for producing nearly all of the energy required for normal cellular function.

A Different Way of Looking at Cancer

Healthy cells generate energy primarily through an extraordinarily efficient process called oxidative phosphorylation, which takes place inside the mitochondria.

According to Dr. Seyfried’s metabolic theory, when the mitochondria become sufficiently damaged by factors such as chronic inflammation, toxins, radiation, oxidative stress, infections, or other long-term insults, they gradually lose their ability to efficiently produce energy.

To survive, the cell adapts.

Instead of relying primarily on oxidative phosphorylation, it shifts toward a much older and far less efficient method of energy production known as fermentation.

This metabolic shift was first described nearly a century ago by Nobel Prize-winning scientist Dr. Otto Warburg, who observed that cancer cells consume extraordinary amounts of glucose while relying heavily on fermentation, even when oxygen is plentiful. Today, this phenomenon is known as the Warburg Effect.

While most cancer researchers view the Warburg Effect as one characteristic of cancer, Dr. Seyfried argues that it may actually be one of its earliest and most fundamental causes.

The Experiments That Challenged Conventional Thinking

Perhaps the strongest evidence supporting Dr. Seyfried’s theory comes from a remarkable series of nuclear-transfer and cytoplasmic-transfer experiments conducted over several decades by researchers including Henry Harris, Beatrice Mintz, Michael Israel, Peter Pedersen, and others.

These scientists asked a remarkably simple question:

What determines whether a cell behaves normally or becomes cancerous—the nucleus or the cytoplasm that surrounds it?

To answer that question, they separated the cell’s nucleus from its surrounding cytoplasm, where the mitochondria reside.

Collectively, these experiments produced findings that challenged the long-held belief that cancer is driven solely by mutations within the nucleus.

Summarizing this body of research, Dr. Seyfried wrote:

“Transfer of a tumor cell nucleus into a normal cytoplasm begets normal cells… Transfer of a normal cell nucleus into a tumor cell cytoplasm begets dead cells or tumor cells, but not normal cells.”

That is an extraordinary statement.

If these experiments are interpreted correctly, they suggest that the metabolic environment surrounding the nucleus, and particularly the health of the mitochondria—may exert tremendous influence over whether a cell behaves normally or malignantly.

That possibility fundamentally changes the questions we should be asking.

Can We Improve Mitochondrial Function?

If damaged mitochondria contribute to the development of cancer, a logical question follows:

Can therapies that improve mitochondrial function help restore healthier cellular metabolism?

One therapy receiving increasing scientific attention is photobiomodulation, more commonly known as red light therapy.

Unlike ultraviolet light, which can damage DNA, red and near-infrared wavelengths penetrate tissues and are absorbed by an enzyme within the mitochondria called cytochrome c oxidase, an important component of the cell’s energy-producing machinery.

Research has shown that photobiomodulation can:

• Increase cellular ATP production
• Improve mitochondrial efficiency
• Reduce oxidative stress
• Decrease inflammation
• Improve circulation
• Stimulate cellular repair and regeneration

These effects have already led to its widespread use in wound healing, pain management, muscle recovery, nerve regeneration, and reducing some of the side effects associated with cancer treatment.

An Important Question Worth Investigating

At present, there is no definitive clinical evidence demonstrating that red light therapy directly treats cancer in humans.

But that is not the question that makes photobiomodulation so intriguing.

The more important question is this:

If restoring healthy mitochondrial function helps restore healthy cellular metabolism, shouldn’t therapies capable of improving mitochondrial performance receive far greater scientific attention within the context of cancer?

That question becomes even more compelling when viewed through the lens of Dr. Seyfried’s metabolic theory.

If the mitochondria truly lie at the heart of cancer, then therapies that safely improve mitochondrial function deserve careful investigation, not because they have already been proven to cure cancer, but because they are addressing what may be one of the disease’s most fundamental biological abnormalities.

Looking Beyond Conventional Thinking

Every major scientific breakthrough begins with someone willing to question a long-held assumption.

Dr. Seyfried has challenged one of the most fundamental assumptions in oncology: that cancer is primarily a disease of defective genes rather than defective energy metabolism; and the evidence supporting the importance of mitochondrial function continues to grow.

At the Holistic Cancer Care Foundation, we believe that healing from cancer requires a multifaceted approach.  We are not suggesting that red light therapy is a cure for cancer in itself, but we do believe it represents one of several promising, low-risk approaches that can be incorporated into a treatment plan to support healthier mitochondrial function.

If cancer begins with damaged mitochondria… might restoring mitochondrial health become part of the answer?