It is nutritious, can increase appetite and promote children's growth and development, and contains protein, fat, sugar, vitamins A, B and C, calcium, phosphorus and iron. Guava has high nutritional value. In terms of vitamin C, it is 8 times more than citrus, and it is better than banana and papaya guava.

Tomatoes (tomatoes), watermelons, pineapples, etc. are ten times more abundant in iron, calcium and phosphorus, and the iron content in seeds is better than other fruits, so it is best to eat them together. Dietotherapy has high medicinal value, can prevent and treat hypertension and diabetes, and is the most ideal fruit for patients with obesity and poor stomach. The leaves and young fruits of guava are sliced and dried in the sun to make tea, which can help treat diabetes.