Germs, Bacteria, and Your Immune System

March 10, 2025

Dr. John Montalvo, ND, unpacks the essential role microbes play in health, from the earth-body connection to the microbiome’s impact on immunity. This class explores the root causes of modern illness, the historical debate between Pasteur and Béchamp, and natural strategies for healing. Dr. Montalvo weaves together science, natural therapies, and spiritual health to offer a deeper understanding of wellness.

Read about this class:

Dr. John Montalvo, a doctor of naturopathy and master herbalist, led a discussion on germs, bacteria, and the immune system. His talk challenged conventional perspectives on viruses, emphasized the critical role of bacteria in human health, and explored how the modern medical system has influenced our understanding of disease.

The Reality of Germs and Bacteria

One of the most striking points Dr. Montalvo made was about the essential role of bacteria in the human immune system. He explained that 70% of the immune system is composed of bacteria, residing in the gut, mouth, and skin. Contrary to the popular belief that bacteria are harmful, he asserted that they are, in fact, necessary for overall health.

However, the overuse of antibiotics has significantly disrupted this balance, often leading to an increase in disease. Antibiotics not only target harmful bacteria but also destroy beneficial bacteria, weakening the immune system over time.

Do Viruses Actually Exist?

Dr. Montalvo presented a controversial viewpoint: the idea that viruses, as we commonly understand them, may not actually exist. He cited scientific studies and historical perspectives to argue that what is often labeled as a virus may instead be the body’s own response to toxicity and imbalances.

Supporting his argument, he referenced Dr. Samantha Bailey, a New Zealand physician who has questioned viral theory in her research. According to Dr. Montalvo, what is frequently identified as a virus under an electron microscope is not a living entity but rather cellular debris from the body’s natural detoxification processes.

A Closer Look at Disease and Healthcare Spending

Dr. Montalvo also addressed how modern healthcare systems approach disease. He pointed out that the United States spends more per capita on healthcare than any other country, yet its life expectancy is lower than that of many nations with smaller healthcare expenditures. This, he argued, suggests that mainstream medicine focuses more on managing disease rather than preventing it through lifestyle and nutrition.

He emphasized that diseases such as cancer, cardiovascular disease, and autoimmune conditions are often the result of nutritional deficiencies and environmental factors rather than infections caused by germs.

The Germ Theory vs. Terrain Theory Debate

The germ theory, popularized by Louis Pasteur, suggests that external microbes are the root cause of disease. However, Dr. Montalvo pointed to the work of Antoine Béchamp, a contemporary of Pasteur, who promoted the terrain theory—the idea that the body’s internal environment determines whether disease develops.

Béchamp argued that germs do not cause disease but rather proliferate in unhealthy conditions. Dr. Montalvo noted that even Pasteur, on his deathbed, admitted that "the terrain is everything", acknowledging that the state of the immune system is more important than the presence of germs.

How to Support Your Immune System Naturally

To maintain a strong immune system, Dr. Montalvo emphasized the importance of nutrition and lifestyle choices:

  • Eat organic, plant-based foods rich in fiber to support gut bacteria.
  • Avoid antibiotics unless absolutely necessary, as they disrupt microbial balance.
  • Supplement with key vitamins and minerals, such as:
    • Vitamin C (3,000-10,000 mg daily) to combat oxidative stress.
    • Magnesium (400 mg daily) for metabolic functions.
    • Vitamin D3 and K2 for immune regulation.
    • Zinc and selenium to support cellular defense mechanisms.
  • Stay hydrated with clean, filtered water free from chlorine and fluoride.

Dr. Montalvo strongly advised that food be seen as medicine. He highlighted how nutrient-dense foods grown in healthy soil provide the body with what it needs to function optimally.

Final Thoughts: Taking Control of Your Health

Dr. Montalvo concluded his discussion by encouraging listeners to take a proactive approach to their health. He urged them to question conventional medical paradigms, do their own research, and seek out natural ways to enhance their well-being.

For those interested in learning more, he recommended books like Virus Mania and Dissolving Illusions, which explore the history of disease and vaccine development. He also pointed out that modern research supports many of these perspectives, particularly the growing understanding of the gut microbiome’s role in immunity.

Ultimately, Dr. Montalvo’s message was clear: health is in our hands, and the key to true wellness lies in understanding and supporting our body’s natural defenses.

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