Whether rice can be eaten overnight mainly depends on whether it is well preserved, if the rice is well preserved, there is no deterioration, overnight rice can be eaten, if the overnight rice has deteriorated, it is not to be eaten. If the rice has been properly preserved and there is no spoilage, it can usually be eaten normally. People with diabetes can also eat well-preserved overnight rice. Cold rice of the same weight generally has a slower glycemic rate than freshly simmered rice. If the rice is not well preserved at higher room temperatures, and thus spoiled and other abnormalities occur, it should be avoided, otherwise it may cause gastrointestinal infections and food poisoning, which is harmful to the health of the body. Note that usually the overnight rice in the refrigerator to keep as much as possible when sealed with plastic wrap, and eat overnight rice is best to eat fully heated.