Alcohol has the following effects on the human body: 1. In moderate amounts, alcohol stimulates vasodilation, which can reduce the risk of cardiovascular diseases, such as common heart attacks, strokes and atherosclerosis, and can reduce the incidence. 2. Alcohol metabolism in the liver can produce side effects, and heavy drinking can easily cause liver strain in the human body, leading to fatty liver, alcoholic liver, etc. Long-term drinking can lead to cirrhosis of the liver. Alcohol can cause a decrease in concentration, slow down nerve reflexes, and affect a person’s judgment, especially after driving and working, which can lead to danger and work errors. 4. It can lead to male dysfunction because it acts on the liver, causing male androgen secretion disorders.