Beer is made of malt, rice, hops, beer yeast and brewing water. Its main feature is low alcohol content, rich in nutrients such as sugar, vitamins, amino acids, potassium, calcium, magnesium, etc., which is beneficial to health if drunk in moderation. Beer has high water content and can quench thirst; At the same time, the organic acids in beer have a refreshing effect. On the one hand, it can reduce excessive excitement and tension and promote muscle relaxation; On the other hand, it can stimulate nerves and promote digestion; In addition, the content of sodium, alcohol and nucleic acid in beer is low, which can increase the blood supply to the brain, dilate the coronary artery, and accelerate the metabolic activity of the human body through the stimulation of the kidney provided by the blood. Moreover, beer also has the function of "preventing diseases". According to the experiment of California Medical Center, compared with alcoholics and alcoholics, moderate beer drinkers can reduce the chances of heart disease and ulcer, and prevent diseases such as hypertension. Excessive drinking of beer is very harmful. 1. Heavy drinking has a high risk of cancer. Not long ago, American cancer experts issued a shocking warning: people who drink a lot of beer are three times more likely to suffer from oral cancer and esophageal cancer than those who drink hard liquor. After studying the health records of a large number of beer drinkers, Arthur, an American cancer expert, found that people who drink more than 6 bottles of beer every day are very likely to develop the above cancer. Australian scholars also found that people who drink more than 10 bottles of beer every day are most likely to suffer from rectal cancer. This is mainly because the content of nitrosamines in beer is higher than other drinks. 2. Drinking a lot of beer is also very harmful to the liver. At the national meeting of liver experts held in Chicago, USA, experts warned people that people who drink a lot of beer are more likely to die of liver disease than those who drink the same amount of wine. A survey was conducted in six hospitals in the United States, and it was found that 24% of the people who had hepatitis due to alcoholism but only survived for five years were beer drinkers. Dr. Mendenhall of Cincinnati Medical Center and his colleagues followed up 370 patients with hepatitis caused by alcoholism, and found that 65 of them drank beer for a long time. 3. Drinking more beer will trigger kidney calculi. This is the conclusion recently reached by Dr. Cui Bo from Heidenborg University Hospital. Because the wort for brewing beer not only contains calcium and oxalic acid, but also contains a lot of guanine nucleotides, which can more than double the amount of uric acid in the human body and promote the occurrence of stones. When you drink too much beer a day, the alcohol in it will directly damage the oral cavity and esophageal mucosa. In addition, the alcohol used to prepare beer is impure, and chemicals such as pigments and nitrosamines contained in smoked products such as salted fish, bacon, sausage and braised pork, which are commonly used in drinking beer, are easy to damage the mucosa of the mouth and esophagus under the interaction with alcohol. People who drink a lot of beer often have enlarged confidants, which is called "bull heart" or "beer heart". Although the alcohol content in beer is not too high, if it is drunk in large quantities for a long time, the heart will continue to be damaged by alcohol, thus weakening the function of fat cells in myocardial tissue and causing tachycardia. Since drinking too much beer is dangerous, we should pay attention to the right amount at the right time, usually 1 to 2 cups at a time. Fresh vegetables, fresh fish and meat and eggs are the best appetizers, and pickled products are used as little as possible. In short, you can't drink too much beer. If you drink several bottles in a row, it will not play the role of "bread", but will play the role of "chronic poison". .