Grapes have a relatively high sugar content, which varies from variety to variety, but is around 10% overall. Grapes are not only delicious, but also have a high nutritional value, being rich in many vitamins, trace elements and amino acids needed by the human body, and are good for lowering serum cholesterol when eaten regularly by healthy people. For people with diabetes, diarrhea, weak stomach and intestines should not eat grapes, grapes contain a large amount of fructose and glucose, which can easily lead to a rise in blood sugar, making blood sugar unstable, and grapes have a certain role in promoting digestion, which can aggravate diarrhea and cause gastrointestinal discomfort after eating in large quantities. In addition, you should not simply look at the sugar content of food, you should also consider the GI value, that is, the ratio of food into the body can raise blood sugar, which represents the body’s absorption efficiency of food sugar is high and low. Food with high sugar content but low GI value is generally not easy to cause diabetes and obesity, such as oranges, sorbets, grapes, apples and so on. Although the sugar content is relatively high, but the human body does not rise significantly after the intake of blood sugar, these types of food generally taste better, less impact, suitable for consumption. Like watermelon, this kind of food with low sugar content, but high GI value, it is easy to cause the rise of blood sugar, easy to cause diabetes and obesity.