May lower risk
Kefir
fermented milk drink. Dairy.
- Verdict
- May lower riskSome studies point to lower risk, but it isn't confirmed.
- How sure
- Rung 1 · UnprovenLab or animal data only, or never directly tested in people.
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 systematic review found only lab and animal studies; no human cancer trials. As a dairy food it shares dairy's probable link to lower colorectal risk.
What to do
Fine as part of your dairy intake; no proven anticancer effect of its own.
Sources
To take it to your doctor, print this page.
Related
Every food we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.