Guava leaves, used in tea form, have been studied for their anti-diabetic properties. Research suggests guava leaf extract can:

Lower blood glucose after meals

Inhibit certain enzymes that convert carbs into glucose

Improve insulin function

How to Use Guava for Blood Sugar Control

Eat the fruit raw (with the skin, if pesticide-free)

Drink guava leaf tea (boil dried leaves in water for 10 minutes)

Avoid sugary guava juices or canned varieties

Stick to moderate portions — even healthy fruits contain natural sugars

Note:

While guava can support blood sugar control, it does not replace medication or doctor-recommended treatment. Always consult a healthcare provider before making changes to your diet or trying herbal remedies like guava leaf tea.