What the Ketogenic Diet Does in Your Body, and Why It Matters for Cancer

Most people hear "keto" and think weight loss. That is not why I recommend it to my cancer patients.

Cancer cells have a metabolic weakness. They rely almost entirely on glucose for fuel and cannot efficiently use ketone bodies the way your healthy cells can. This is called the Warburg Effect, and it has been documented across dozens of tumor types since the 1920s. A ketogenic diet exploits that weakness directly by lowering blood glucose and raising ketones, creating an internal environment that starves cancer cells of their preferred fuel while your healthy cells thrive.

The research backs this up. A 2025 meta-analysis covering studies through June 2024 found that cancer patients on a ketogenic diet had significantly reduced fatigue, better sleep, lower insulin levels, and meaningful improvements in quality of life compared to those eating standard diets.

I put together a full guide covering how ketosis works, what the clinical research shows, how to get started, what to eat, and five recipes built specifically for people in treatment and recovery.

Read the full guide here