Many people like to eat doughnuts for breakfast, so is it okay for diabetics to eat them? Food that originally contains no or very little fat increases exponentially in fat after being fried. Although fat is a high-calorie food is difficult to digest, but the absorption rate is high, too much intake will certainly lead to excess calories. If you do not increase exercise to consume the excess calories, it will lead to obesity over time, resulting in cardiovascular and cerebrovascular diseases, hypertension, lipid disorders, and a significant increase in blood sugar, making it more difficult to control the existing diabetes. Doughnuts after high-temperature heating, cooking oil in the beneficial nutrients will be damaged to varying degrees, with the rise in oil temperature and frying time to extend the degree of destruction of its nutrients more obvious; fried food in many nutrients, will also suffer serious damage due to high temperatures and other factors, so excessive consumption of fried food will cause people to nutritional imbalance. Doughnuts are high-temperature fried food, high melting point, long residence time in the stomach, difficult to digest. Older diabetic patients due to the increasing decline in physiological function, gastric function is reduced, the intestinal absorption capacity is poor, more should not eat greasy and difficult to digest food. The high-temperature oil used repeatedly by roadside stalls also contains certain toxic substances. Some experiments have proved that the carcinogen malondialdehyde contained in cooking oil increases 2.8 times after three times of repeated use, and the carcinogen malondialdehyde contained in cooking oil increases more than 30 times after seven times of repeated use, which can seriously affect the health of the body. In summary, doughnuts can increase calories, raise blood sugar, lose nutrients and damage health, so it is best for diabetics not to eat doughnuts.