We all know that the habit is rich in water, which is difficult to match the general fruit. And watermelon also contains vitamins, proteins, pectin and other ingredients, pectin into the human body can promote insulin secretion in the human body, so that high blood sugar patients with blood sugar reduction. Therefore, patients with high blood sugar can eat watermelon, while watermelon heat detoxification, summer cooling effect is definitely the best tool against the summer heat. However, because watermelon is cold, eat too much of it is not good for our stomach, so older patients with high blood sugar is best not to eat watermelon. At the same time, because watermelon also contains high sugar, so patients with high blood sugar must not eat watermelon, which will make your blood sugar rise instead of fall, is not conducive to the control of high blood sugar. At the same time, we should remember that for patients with high blood sugar to eat watermelon time is also a strict requirement, it is best to eat between meals, this time to eat will be better for patients with high blood sugar.