Is Cancer Actually a Metabolic Disease with Dr. Thomas Seyfried

IN THIS EPISODE

What if we've been looking at cancer the wrong way for more than 70 years?

In this episode of the ReThink Health Podcast, I sit down with Dr. Thomas Seyfried, a professor of biology at Boston College and author of Cancer as a Metabolic Disease. For decades he has asked a question most of oncology stopped asking long ago: what if cancer isn't driven mainly by bad genes?

This conversation is deeply personal for me. My dad battled cancer three times, and I recently lost him. Two of my close friends, one in her 40s and one in his 50s, are facing cancer right now. Dr. Seyfried's work was a source of hope for our family, and I know cancer touches almost everyone's life.

Dr. Seyfried explains why he believes cancer is primarily a mitochondrial metabolic disease. His argument builds on the work of Nobel laureate Otto Warburg and on his own lab's research into how cancer cells rely on two fuels: glucose and glutamine. He walks us through the nuclear transfer experiments that challenged the gene-centered view of cancer. He also explains why cancer cells "ferment" for energy instead of "breathing" like healthy cells.

You'll learn:

Why Dr. Seyfried believes the gene mutations found in cancer are an effect of the disease rather than its cause

The difference between fermentation and respiration, and why cancer cells keep fermenting even when oxygen is present

Why he says glucose and glutamine must be targeted together, and how his "press-pulse" strategy works

How to use the Glucose-Ketone Index to see where your metabolism stands

Why ketones are often called a "super fuel" for healthy cells

How alcohol, portion size, exercise, stress, and fasting affect your glucose ketone index (GKI)