Unclear
Guava fruit and leaf
fruit, juice and guava-leaf tea. Vegetables & fruit.
- Verdict
- UnclearThere isn't enough human evidence to say either way.
- 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 shown in people
What the evidence shows
Guava extracts slow cancer cells in lab and animal studies. A 2023 review found no clinical trial in people and said trials are needed before it can be called safe or effective.
What to do
Enjoy the fruit. Don't rely on guava-leaf tea or extracts against cancer.
Sources
To take it to your doctor, print this page.
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Related
Every food we rated, or follow one cancer step by step: breast cancer, colorectal cancer, lung cancer and prostate cancer.