Alcohol is not recommended for people with diabetes. Drinking alcohol may cause poor glycemic control for them, which can increase the chances of diabetic complications in the long run. 1. Dietary treatment for diabetic patients is fundamental, and dietary treatment includes limiting the total calories of carbohydrates, fats, proteins, and fruits. In the process of drinking alcohol, it is easy to lead to the inability to control the total calories, causing excessive intake, which affects blood glucose. 2. Diabetic patients usually take a variety of drugs to control blood glucose, due to the different physical qualities of individuals, alcohol may affect the effect of drugs, resulting in changes in drug efficacy, affecting the control of blood glucose, blood glucose fluctuations. And should be alert to alcohol may induce hypoglycemia, so avoid drinking on an empty stomach. 3. The complications of diabetes mellitus include vascular, retinal, and neurological, etc. Poor glycemic control caused by alcohol consumption will increase the risk of diabetic cardiovascular disease, diabetic nephropathy, retinopathy, peripheral neuropathy, and complications such as cerebral infarction, uremia, blindness, and diabetic foot. 4. Some studies have shown that moderate alcohol consumption can also affect brain health, increasing the chances of suffering from dementia, Parkinson’s and other diseases. Diabetic patients should develop good living habits, quit smoking, quit drinking, control blood sugar, blood pressure, blood lipids, in order to reduce the emergence of diabetes complications. More food health knowledge can consult a nutritionist, under the guidance of the doctor’s scientific and rational consumption.