Guava is also rich in vitamin C, potassium, antioxidants, and plant compounds such as flavonoids. These nutrients may support metabolic health, reduce inflammation, and contribute to normal immune function.

Some early research has also looked at guava leaf tea, which may help reduce blood sugar spikes after meals and slow the breakdown of carbohydrates into glucose. However, it should be viewed as a supportive habit rather than a treatment.

For the most benefit, choose fresh guava with the skin, avoid heavily sweetened juices or processed products, and consider pairing it with protein or healthy fats. No single fruit can replace medication, medical care, or an overall balanced diet.