Edible value Guava is sweet and juicy, with smooth pulp and few seeds. Regular consumption can supplement the nutrients that the human body lacks, strengthen the body and improve the physical quality. Guava is not only nutritious, but also high in trace elements. Eating a guava for breakfast can meet the body's demand for nutrients such as protein and fat, and supplement nutrients such as calcium, iron, dietary fiber and vitamins that are lacking in the body. The most important thing is that guava contains low fat and calories. Eating a guava in the morning can meet the needs of internal organs, such as iron, folic acid, calcium, fiber, protein, carbohydrates, vitamins A, B and C. A guava contains about 0.9 grams of fat or 84 calories. Compared with apples, guava has 38% lower fat content and 42% lower calories. Guava is also widely used in food processing industry, the main purpose is to increase the content of vitamin C in food, so that the nutrition of food can be strengthened and improved. Guava is rich in nutrition, and rich in vitamin C has a good effect on treating diabetes. Guava can not only be eaten directly, but also be processed into different forms such as juice, jam, jelly and preserved fruit. Guava can be beauty beauty, and you can lose weight. Supplementing various nutrients needed by human body, improving human digestive system, improving human immunity and treating some physical diseases. Vitamin c in guava has the effect of treating male infertility. In addition, it can reduce the risk of common cold, swollen gums, high blood pressure, obesity, diabetes and cancer. Guava is rich in dietary fiber, which is good for people with constipation. For people who are trying to lose weight, the high fiber content of guava is also beneficial. If guava is regarded as a daily food, then according to the research results, guava has the effects of anti-cancer and heart disease treatment. Psidiumguajava, the scientific name of guava, helps to resist free radicals produced by metabolism. Guava can be eaten raw or cooked as fresh fruit, and the cooked guava can be made into various sauces such as water jam, jelly and hot and sour sauce. Guava can also add flavor when making sauces, fruit salads, pies, puddings, ice cream, yogurt and some drinks. Guava can be eaten with or without skin. Before eating, the fruit should be divided into two parts, which can be added according to cooking needs. Indications of medicinal value function: invigorating spleen and eliminating stagnation; Astringent intestine to stop diarrhea. The staple food is full; Malnutrition; Diarrhea; Dysentery; Rectum; Blood collapse. [5] Convergence to stop diarrhea; Relieve pain and cure sores. Treat diarrhea; Abdominal pain; Toothache; Diabetes; Ulcer; Snake bite. ① Annals of Nanning Medicine: astringe and stop diarrhea. Treat diarrhea, chronic dysentery, eczema and traumatic hemorrhage. ② Manual of Chinese herbal medicines commonly used in Guangzhou army: treating eczema, itching and miliaria. Pharmacological effect 1, hypoglycemic effect: normal rabbits fed with 25g/kg guava juice, the blood sugar level decreased 19%, and diabetic rabbits decreased by 25%. The drug effect reached the highest 4 hours after taking the medicine, and the original blood sugar level was restored within 24 hours. 2. Hemostasis: 20mg/kg of gallic acid extracted from Guava can shorten the average coagulation time by 565,438 0%. 3. Anti-fertility effect: Guava root decoction has obvious anti-fertility, anti-implantation, anti-early pregnancy and induced labor in mice; The best route of administration is intraperitoneal injection, followed by subcutaneous administration, and oral administration is almost ineffective; It can enhance the contraction of mouse uterus in vitro and in vivo, especially the contraction of pregnant uterus. Combined with prostaglandin E2, it has obvious synergistic effect on resisting early pregnancy and exciting isolated uterus in mice. Its mechanism of action may be to damage placental trophoblast cells, cause degeneration and necrosis, or interfere with progesterone secretion. The effective antifertility component of guava root may be tannin, especially guava ellagic acid glucose. 4. Toxic Guagua decoction has scab and tissue necrosis at the subcutaneous injection site in mice, and intraperitoneal injection can stimulate the liver. The lethal dose of Guagua decoction is 2.84g (crude drug) /kg. Attachment ① Treatment of enteritis and dysentery: Guava fresh leaves 1 ~ 2 tablets, decocted in water. (Selected Chinese Herbal Medicine in Yunnan) ② Treatment of traumatic injury and knife wound bleeding: Mash fresh leaves of guava and apply them externally to the affected area. (Manual of Chinese Herbal Medicine Commonly Used by Guangzhou Air Force)