Food such as cake is not allowed to be eaten by diabetic patients. This is because cake is typically a high glycemic index food, which means that if a diabetic eats cake, it will cause a significant increase in blood sugar within a short period of time, which is not good for the control of the diabetic’s condition. Regardless of the type of cake, the most basic ingredient of cake is still sugar, and it is a typical high sugar food, which will not only affect blood sugar, but also lead to a significant excess of energy intake. This, from another point of view, is not good for weight control in diabetic patients, because the excess calories, which are difficult to consume in a short time, will be converted into fat to form high-fat toxicity, thus aggravating the formation of insulin resistance. Cakes tend to have a lot of fatty acids, especially saturated fatty acids, which are also not good for improving fat metabolism in diabetic patients. So if diabetics are going to eat dessert, desserts like cake should be avoided as much as possible.