Generally the skin of guava is edible. Guava skin is rich in vitamins, fiber, protein and other nutrients, consumption of the human body has certain benefits. Guava skin and pulp are connected, which is rich in vitamins, fiber and other nutrients, moderate consumption can be supplemented for the human body, is conducive to human health. Although the nutritional value of guavas is high, the content of cellulose in guavas is relatively high, and the human body does not have the enzyme that can completely digest and metabolize the cellulose content, overconsumption is likely to aggravate the digestive burden on the human body, which may lead to abdominal pain, diarrhea, and loose stools (stools that are thin and not shaped), and other discomforts, which are threatening to the human body, so it is recommended that guavas be consumed in moderation. In addition, guavas contain a lot of sugar, and diabetic patients have high blood sugar, overconsumption is likely to induce or aggravate the condition of diabetic patients, posing a threat to their health, so it is generally not recommended that diabetic patients overconsume.