Alcohol metabolism needs to be carried out in the liver, and if you often drink, it is easy to increase the load on the liver, leading to alcoholic cirrhosis, fatty liver and other diseases. In addition, drinking alcohol will make blood sugar fluctuate and cause greater impact on blood sugar, the main effects are as follows: 1. lower blood sugar: If you drink alcohol in a fasting state, the ethanol in the wine will easily inhibit the glycogen of the liver, and at the same time will stimulate the secretion of insulin by the pancreatic islet cells, which will lead to lower blood sugar concentration in the human body. In this case, the patient is prone to hypoglycemia; 2. Elevated blood sugar: In the process of drinking, ethanol provides heat but does not raise sugar, and the blood sugar rises after drinking because of the production of insulin resistance, and the hypoglycemic effect is weakened, resulting in elevated blood sugar. In addition, if you drink a lot of alcohol for a long time and repeatedly, it is easy to cause damage to the pancreas, which may affect insulin secretion and cause elevated blood glucose. In summary, alcohol consumption has a large impact on blood sugar. If diabetic patients drink a lot of alcohol, especially after insulin medication injection, the risk of hypoglycemia is higher. Therefore, it is recommended that diabetic patients should quit smoking and drinking, eat regularly and exercise appropriately to keep their blood sugar in the normal range.