2. Eating guava helps to lose weight. Guava is rich in water and contains dietary fiber, vitamin C, carbohydrates and so on. It can promote intestinal peristalsis, increase satiety, moisten the intestines and relax the bowels, and accelerate the discharge of toxic waste in the body. Moreover, guava is low in calories, and moderate consumption helps to lose weight. But guava contains tannic acid and should not be eaten more. The cellulose contained in guava can not be digested in the intestine, causing intestinal discomfort and constipation, which is not conducive to weight loss. Eat 1 ~ 2 guavas every day.