is some promising research involving digestive health, blood sugar, and antioxidant activity, but more high-quality human research is needed to determine exactly how useful guava-leaf preparations may be.
If you enjoy guava-leaf tea, moderation and sensible preparation are important. And when a health problem is persistent or serious, proven medical treatment should always come first.
Guava leaves may be interesting—but promising research is not the same thing as a proven cure.
