Watermelon is the most natural natural beverage, and it is rich in nutrition and beneficial to human body. However, although watermelon has many advantages, the side effects should not be ignored if eaten in large quantities or for a long time. Watermelon can't be eaten after deterioration, which is easy to cause gastrointestinal diseases and diarrhea. Wei Qing. Zhang Lu's "Ben Jing Feng Yuan" says: Watermelon, sweet and cold, diarrhea. Its nature is that the kernel is warm and warm, and the principle of clearing phlegm and saliva is its nature. He also quoted the cloud of Xiang gan zhi: after eating watermelon, he ate his son, that is, he did not smell the melon, and his power of warming and dispersing was known. Those who eat fruits and vegetables too much and cause abdominal pain due to gastrointestinal cold accumulation can be treated by taking Lizhong decoction. Although watermelons are beneficial to people, please remember the folk slang in Taiwan Province: eating watermelons every day makes you sick at midnight.

unsuitable crowd: patients with deficiency of spleen and stomach or diarrhea in loose stool. Maternal women's physique is relatively weak. From a medical point of view, watermelon is cold, so eating too much will lead to excessive cold and damage the spleen and stomach. Patients with renal insufficiency who have problems with renal function will eat too much watermelon, which will lead to excessive water storage in the body, increased blood volume and easy to induce acute heart failure. Eating watermelon in diabetic patients will lead to an increase in blood sugar. If the illness is serious, it may even cause acidosis due to metabolic disorder, which is life-threatening. Oral ulcer in patients with oral ulcer is considered to be caused by internal heat due to yin deficiency and disturbance of virtual fire in traditional Chinese medicine. Eating watermelon causes the water needed for the recovery of oral ulcer to be discharged too much, which aggravates yin deficiency and internal heat, and leads to the prolonged healing time of patients.