Xylitol does have a lot of functions, the use is also very wide, but if excessive consumption will be fat. And from the physical and chemical properties, xylitol is on the cool side, it is not broken down by gastric enzymes, directly into the intestinal tract, eat more on the gastrointestinal stimulation, may cause abdominal discomfort, flatulence, intestinal chirping. Because xylitol is less than 20% absorbed in the intestines, it is easy to accumulate in the intestinal wall, which can easily cause osmotic diarrhea. In Europe and the United States, food containing xylitol, will be indicated on the label "excessive intake may cause diarrhea" such as consumer tips. But in the domestic market sales of food, but rarely see this logo. A well-known chewing gum manufacturer said that its production of xylitol chewing gum, "xylitol content is low, and not enough to cause diarrhea," so this kind of labeling "is not necessary. Nonetheless, dietitians warn that the upper limit of xylitol intake in a day is 50 grams for a Chinese person's physique. Chewing gum alone should not be a problem, but if you eat a lot of other xylitol food, you need to pay attention to the amount. Excessive consumption of xylitol can raise blood lipids. Diabetic patients can't consume too much sugar due to insulin secretion dysfunction in the body, and even a small amount of sugar may cause adverse consequences. At present, there are about 30 million diabetics in China, that is to say, involving about 30 million families to choose their diets carefully. This has led many businesses to seize the opportunity to make money by mass-producing sugar-free foods. As a result, there are more and more "suitable" for diabetics to take food, such as ultra-dry beer, pumpkin juice drinks, sugar-free milk powder, sugar-free cookies, sugar-free cereals, sugar-free chewing gum, sugar-free candy and so on. Xylitol and glucose are the same as glucose are composed of carbon, hydrogen, oxygen elements of carbohydrates, xylitol in the metabolism of the initial, may not need insulin to participate in, but in the metabolism of the late stage, it will need to be promoted by insulin. Therefore, xylitol can not replace glucose to correct metabolic disorders, nor can it reduce blood glucose, urinary glucose, and improve clinical symptoms. Clinical practice shows that xylitol does not treat diabetes, and xylitol eat too much, blood triglycerides rise, causing coronary artery atherosclerosis, therefore, diabetics should not eat more xylitol.　　The above is my simple introduction to the harm of xylitol overdose, in order to avoid the adverse effects of xylitol on the body, we recommend that you eat a moderate amount of food with xylitol. I wish you good health and a happy life.