Beer does not directly constitute obesity. The main reason why people are really obese is that drinking is the food they eat, and they are the culprit. A can of 350ml canned beer contains about 143 kcal, which is only equivalent to a piece of bread. Alcohol is easily decomposed into water and carbon dioxide after being absorbed by the human body. It can provide energy, but it will not be stored in the body.

Although the alcohol content of beer is not high, once it is excessive, the absolute amount of alcohol will increase, which will increase the burden on the liver and directly damage the liver tissue, increase the burden on the kidney and weaken the myocardial function. In the long run, it will lead to heart failure and arrhythmia. Studies have confirmed that excessive drinking of beer will promote the occurrence and development of arteriosclerosis, heart disease and fatty liver. Drinking a lot of beer damages the gastric mucosa, causing gastritis and peptic ulcer, with symptoms such as epigastric discomfort, loss of appetite, abdominal distension, belching and acid regurgitation. In summer, many people like to drink cold beer, which leads to the decrease of gastrointestinal temperature, the contraction of capillaries and the decline of digestive function.

In patients with atrophic gastritis and urinary calculi, drinking a lot of beer will lead to relapse or aggravate the disease. This is because the wort of brewing beer contains calcium, oxalic acid, uridine and purine nucleotides. Their interaction can more than double the amount of uric acid in human body, which not only promotes the formation of gallstones, but also induces gout. Drinking beer in moderation can prevent diseases, but the extremes meet, and the body's reaction ability will be reduced if you drink too much. Australian experts have found that people who drink more than 5 liters of beer a day are most likely to develop rectal cancer.