Unclear
Ketogenic diet to starve cancer
very low-carb, high-fat eating. Food & drink.
- Verdict
- UnclearThere isn't enough human evidence to say either way.
- How sure
- Rung 2 · LimitedFew, small or conflicting human studies, or only indirect measures such as blood markers.
The rung shows how sure the science is, not how big the effect is. How to read these ratings
Cancers affected
None proven
What the evidence shows
A 2025 review of 14 small trials found less body fat and some better fatigue and mood scores, but none of the trials measured survival, and the authors urged caution. It hasn't been shown to shrink tumors in people.
What to do
Talk with your team or a dietitian first; unplanned weight loss is a real risk during treatment.
Sources
To take it to your doctor, print this page.
Related
Every myth and exposure we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.