It generally takes 12 hours for alcohol to be excreted from the body, but the specific time may vary depending on the individual’s physical condition and metabolizing ability. After drinking alcohol, most of the alcohol will be absorbed by the gastrointestinal tract into the blood circulatory system; ethanol in the role of the relevant proteolytic enzymes are decomposed and metabolized into acetaldehyde, acetic acid, and carbon dioxide and water, this process generally takes two to four hours; and then decomposition of the products of the urine, respiration and complete excretion of the body will take 12 hours. Drinking large amounts of alcohol will prolong the metabolism time, and will increase the burden on the liver. Alcohol is recognized by the World Health Organization as a carcinogen, so it is recommended not to drink alcohol. In addition to causing cancer, alcohol abuse can lead to cardiomyopathy, central nervous system disorders and many other health problems.