Some friends worry that drinking beer often will make people fat and produce a beer belly. In fact, it is unreasonable to associate drinking beer with getting fat. Beer can produce high calorific value, mainly from alcohol and other extracted nutrients. Because of the different types of beer, there are also differences in calories. For example, a large bottle of Jiafeng beer has a calorie of about 160 kcal, and the extract components can be converted into 90 kcal, which can provide about 1/5 calories for normal people every day. Beer does not contain high fat that makes people fat, so drinking beer itself will not make people fat. But it is worth mentioning that beer can promote the secretion of gastric juice and increase appetite. In addition, it is hard to say that eating high-calorie dishes while drinking can increase the absorption of fat. Therefore, unrestrained overeating is the real cause of obesity. In fact, beer is a widely drunk hobby between wine and cold drinks. With the continuous improvement of people's living standards, drinking beer has changed from a summer drink to a healthy drink that is not limited by seasons all year round. Many middle-aged men have bulging stomachs like watermelons, which seems to be caused by overnutrition. In fact, the appearance of "beer belly" may be a signal of malnutrition. Generally speaking, when men are close to old age, they need less calories because of their low metabolic rate; But for various vitamins, minerals and some nutrients, it needs more. If you can't take in and balance nutrition effectively, you are prone to hair loss, loose teeth, dry skin, muscle weakness, constipation and mental retardation. For men, a moderate diet (referring to the intake of nutrients) can not only prevent heart disease, but also make 60-year-olds as agile as 30-year-olds. Therefore, men should pay attention to the intake of iron, calcium, protein, folic acid and vitamins C, D and B 12 from middle age. Iron supplementation (you can eat more liver, eggs and nuts) can enhance hematopoietic function and prevent the occurrence of insensitive and shortness of breath. Eat more oranges, cabbages, green peppers and watermelons. Vitamin C helps to improve the body's ability to absorb iron, reduce cholesterol, avoid tension and slow down aging. Ensure that protein's demand (eat more fish, soybeans, milk and eggs) will slow down muscle atrophy with age. Calcium and vitamin D (rich in milk and fish) will play a key role in preventing osteoporosis and tooth loosening. Folic acid (rich in green vegetables, fruits and milk) and vitamin B 12 will be anti-aging and anti-fatigue.