Drinking alcohol the next day may lead to increased blood glucose, but there will also be a decrease in blood glucose, diabetic patients are not recommended to drink alcohol. 1. Elevated blood sugar: Alcohol has a high calorie content, which also increases the burden on the liver, affects the function of the pancreas, and causes abnormalities in glucose metabolism, so it may lead to elevated blood sugar the next day after drinking alcohol. 2. Lower blood sugar: After drinking a lot of alcohol, the alcohol concentration in the body rises, the liver cells absorb a large amount of glucose, inducing a hypoglycemic reaction, too much alcohol or too low a drop in blood sugar can lead to the appearance of coma, starvation, impaired consciousness and other manifestations, it is difficult to distinguish between the two, and it is very likely to have a life-threatening condition if it is not treated in a timely manner. Therefore, it is best not to drink alcohol in general. Seek medical treatment in time when blood sugar is abnormal.