Germ theory has shaped every major public health achievement of the last century—from clean water systems to infection control—but it’s also become one of the most misunderstood and debated topics in today’s health landscape. In this episode of Rooted & Wild, we clarify what germ theory actually means, why it remains foundational to modern medicine and public health, and how to engage constructively with people who doubt or distort it. We explore how microbes interact with human behavior, environment, and community systems—offering listeners a grounded, scientific, and accessible framework for understanding disease in the modern world.

About Jay K. Varma, MD

Jay K. Varma, MD is a physician, epidemiologist, and public health expert who has spent more than two decades working to prevent and control infectious diseases around the world. From combating Ebola in Africa to controlling HIV in Asia and the U.S., his career has focused on understanding how invisible forces—microbes, systems, and human behavior—shape our health and communities. Through his writing and health practice, he works to help people see how science and everyday life intersect: how our bodies, environments, and choices are constantly in conversation with one another and how the communities we create, the way we interact with animals and the environment, and the systems we build together determine our collective well-being.

Learn more about Dr. Jay K. Varma:

https://drjayvarma.com

https://www.youtube.com/@thermometerHQ

https://www.psychologytoday.com/us/blog/fevered-mind

https://www.healthbeat.org/authors/dr-jay-k-varma/

Rooted & Wild provides general information for educational and informational purposes only. The views and opinions expressed by guest speakers are their own and do not necessarily reflect those of David Allen Tracy. The content shared on this podcast is not intended to replace individualized medical, psychological, or therapeutic advice, nor should it be used to diagnose or treat any health condition. Listeners are encouraged to consult with qualified healthcare professionals regarding any medical or mental health concerns.