Nothing can quench your thirst like warm water. On a hot summer day, the coolest thing is to have a sour and sweet iced drink! At present, the concept of beverage is complicated and dazzling, and consumers' tastes are varied, which should be delicious and refreshing, but more nutritious. What kind of drink is best for you? I don't know when all kinds of drinks began to replace boiled water and mineral water and become the main drinks in our lives. Its colorful colors and refreshing, sweet and sour taste make more and more people fondle it. Although the main component of beverage is water, it can supplement the beneficial substances such as sugar, inorganic salts and vitamins consumed by human body due to activities or sports, and maintain the balance of water and electrolyte in the body. What are the functions of summer drinks? Recently, the reporter interviewed Professor Zhang Jiazhi from Beijing Food Research Institute. Insufficient intake of fruit juice and vegetables is very common in China, and fruit juice and vegetable juice just make up for this gap. At present, there are dozens of fruit juice and vegetable juice drinks on the market. Professor Zhang Jiazhi from Beijing Food Research Institute said that most fruit juice drinks are not pure fruit juice, and the content of fruit and vegetable juice is only 50% at most. It is understood that pure fruit juice is made by processing fruits and vegetables into unfermented fruit juice, or adding natural moisture lost in the process of fruit juice concentration to concentrated fruit juice, which has the color and flavor of the original pulp, and the original vitamin substances of the fruit will not be destroyed. Fruit juice beverage is made by adding water, sugar solution, sour agent and other ingredients into fruit juice, and the content of fruit juice is less than half of pure fruit juice. Benefits: The fruit juice beverage is low in calories and contains a lot of trace elements and minerals such as vitamins, carotene, dietary fiber, etc. It has the functions of resisting oxidation, helping digestion and strengthening physical strength. It can not only avoid excessive intake of energy foods such as meat and promote digestion, but also regulate chronic diseases such as arteriosclerosis, hyperlipidemia and coronary heart disease. Especially vegetable protein drinks, can provide energy and protein. For example, almond drink has the function of moistening lung, and walnut contains phospholipids, which has the function of strengthening brain. This drink has high health care value. Love reminder: Juice drinks are not fruits, nor can they replace fruits. Although it contains a lot of nutrients, it also lacks an important ingredient, that is, crude fiber in fruits. Moreover, the sugar in fruit juice is very high. Drinking it before going to bed is easy to increase blood viscosity and increase the risk of cardiovascular and cerebrovascular diseases, which is very unfavorable for blood sugar control. In addition, the colors of many fruit juice drinks are made by adding pigments, which is not good for your health. People with diabetes must pay attention to the sugar content. Tip: If you want to drink juice to supplement trace elements, I suggest you pay more attention to the specific juice content when buying juice drinks. It is best to take 1-2 cups a day, and the more kinds of fruits and vegetables, the better. Lactic acid beverage Lactic acid beverage is on fire, so many people can't tell what is yogurt and what is lactic acid beverage, thinking that nutrition is just as good, and they often buy it wrong. Professor Zhang Jiazhi said that lactic acid drinks are far less nutritious than yogurt. Professor Zhang made it clear that yogurt is made of high-quality milk fermented by lactic acid bacteria and belongs to the category of dairy products, while lactic acid beverage is just a beverage, not a dairy product. The nutrition of yogurt drink is only 1/3 of that of yogurt. Benefits: Ordinary lactic acid drinks can supplement certain nutrients, and some lactic acid drinks containing additives can also provide calcium and vitamins needed by the human body. There are also a few lactic acid drinks containing active lactic acid bacteria, although the content is very small, but it is the most beneficial to the human body, which has many health care effects such as promoting the absorption of nutrients and regulating gastrointestinal function. In addition, because there are few or no lactic acid bacteria in lactic acid drinks, the shelf life is long, usually more than one month, and the storage conditions are not so strict, so they can be stored at room temperature. Love reminder: According to the regulations of dairy industry, the content of protein in 100g yogurt is ≥ 2.9g, while the content of protein in lactic acid beverage is only about1g.. But in fact, the nutritional value of lactic acid drinks is very low. It only contains about 5% milk ingredients, mainly water, sugar, acid and so on. Therefore, it is mainly delicious and used to quench thirst. Lactic acid drinks have high sugar content, and obese people can easily induce fatty liver and hyperlipidemia if they drink too much. For patients with diarrhea, sugar will also increase the burden of gastrointestinal digestion, make sugar indigestion, and aggravate diarrhea and bloating. Tip: The nutritional value of lactic acid beverage is not as high as that of yogurt, so you can't use lactic acid beverage instead of yogurt. Tea drinks: black tea, green tea, lemon tea, oolong tea ... more and more tea drinks appear. Although it is not as cultural as tasting tea, it tastes much better because of its fragrance and is more acceptable to people. Benefits: The biggest feature of tea beverage is fresh and refreshing, and it also has anti-oxidation and anti-fatigue effects. At the same time, the tea beverage also contains vitamin A and vitamin E, which helps to protect smooth and delicate skin, reduce wrinkles and prevent radiation. In addition, tea beverage also contains some tea tannins and tea polyphenols unique to tea, which can play the role of diuresis, heatstroke prevention and cooling in summer. At present, several sugar-free tea drinks with xylitol as the main raw material are very popular. Xylitol has the best physiological activity among all edible sugar alcohols, and can prevent dental caries without raising blood sugar. Xylitol can also reduce the salinity of mucous layer of respiratory tract and prevent bacterial infection of respiratory tract. Love reminder: Although tea beverage contains some effective ingredients of tea, it is mainly composed of the essence of tea, so it can't replace tea at all, especially when you are thirsty, drinking a cup of tea can actually solve the problem. Tip: Tea drinks will not harm your health. If you feel delicious and refreshing, you might as well drink more. Just be careful not to drink it before meals, especially iced tea, otherwise it will affect your appetite. Carbonated drinks Some people say that we have entered an era of carbonated drinks. Faced with a dazzling array of carbonated drinks, we blindly choose and drink. Even though people often say that it is not good to drink "steam" drinks, more and more people drink them, especially young people. Professor Zhang Jiazhi said that carbonated drinks are often called soft drinks, which are full of carbon dioxide gas. They are very enjoyable to drink, but they must not be addictive, because its side effects will greatly exceed the sensory stimulation it brings. Benefits: Perhaps the only benefit of carbonated drinks is that their steam has a unique effect. Sufficient carbon dioxide can play the role of sterilization and bacteriostasis, and can also take away the heat in the body by evaporation to cool down, which makes people drink very refreshing. Professor Zhang said that orange juice soda, orange juice soda and other fruit juice carbonated drinks are all added with some raw juice, and fresh fruits are squeezed into juice and added to soda. Some drinks have a small amount of pulp precipitation, so some vitamins can be supplemented appropriately. It is more suitable for young people and children to drink, but it can't be drunk every day or in large quantities at one time. There are also some low-calorie carbonated drinks with low sugar content, but you can drink more appropriately. Love reminder: carbonated drinks are very harmful to the digestive system and bones. Because the main component of carbonated drinks is carbon dioxide, it will be refreshing and exciting to drink. However, a large amount of carbon dioxide can inhibit bacteria in drinks, and at the same time, it can also inhibit beneficial bacteria in our bodies, and the digestive system will be destroyed. Young people especially like the stimulation brought by steam, but if they drink too much at once, the released carbon dioxide can easily cause bloating, affect appetite and even cause gastrointestinal dysfunction. In addition, carbonated drinks contain a lot of sugar. Too much sugar in drinks is absorbed by the human body, which will produce a lot of heat, which will inevitably lead to obesity over time. In particular, it will bring a great burden to the kidneys, which is also one of the hidden dangers of diabetes. Professor Zhang Jiazhi particularly emphasized that sugar is very harmful to children's tooth development, and it is particularly prone to tooth decay. Even if you choose sugar-free carbonated drinks to reduce the intake of sugar, the acidity of the drinks is still very strong, which will also lead to tooth decay. In addition, carbonated drinks mostly contain phosphoric acid, and the intake of a large amount of phosphoric acid will affect the absorption of calcium, resulting in calcium and phosphorus imbalance. For growing teenagers, calcium deficiency undoubtedly means slow bone development and osteoporosis. According to some data, the risk of fracture of teenagers who often drink a lot of carbonated drinks is three times that of other teenagers. Tip: Pay attention to the date of production when drinking carbonated drinks in summer, and it is best to drink them all at once after opening a bottle, otherwise the carbon dioxide inside will overflow during storage and easily breed bacteria. At the same time, don't drink alcohol before or during meals, which will not only affect appetite, but also affect digestion, causing steam in the stomach, which will easily lead to chronic esophagitis and chronic gastritis. New things in functional drinks are always the most attractive. Playing the "function" brand drink made everyone drink it again. It seems that since it is a "functional" drink, it can stimulate the body on a hot day, and you can still work after drinking it. However, Beijing Consumers Association reminds you that functional drinks are only suitable for specific people, and the sugar in them will make people feel full and easily cause dehydration. Benefits: since it is called a functional drink, it must have its function. Its particularity determines that it is useful for people to drink it under the circumstances of strenuous exercise, high physical consumption and a lot of sweating. Zhang Yanling, from the Department of Infectious Gastroenterology, Beijing Institute of Pediatrics, said that functional drinks are rich in electrolytes, which can properly supplement trace elements such as calcium and zinc lost by human body and salt missing after sweating. Because of the need to activate body functions, some functional drinks also contain caffeine, taurine and other ingredients that stimulate the central nervous system, which can refresh the mind and resist fatigue. Some health-care ingredients, such as LGT and Bifidobacterium proliferation factor, are added to some functional drinks, which are safe for human body to lose weight, help to regulate the stomach and intestines, promote fat metabolism, and play the role of anti-fatigue, slimming and beauty. In addition, some functional drinks contain lysine, which must be supplemented during the growth and development of children. Love reminder: the rich electrolyte contained in functional drinks can be self-regulated for developing children, but if it is supplemented too early or too much, the self-regulation of the body will increase the load and damage the child's renal function. Moreover, this kind of injury is sometimes not easy to find, and it may cause renal failure in adulthood. Secondly, caffeine and taurine in functional drinks stimulate the central nervous system and have an impact on the heart. In addition, although amino acids are essential for human body, Professor Zhang reminded that frequent and excessive intake of lysine will increase the burden on liver and kidney, and at the same time lead to increased blood pressure and brain cell damage. Tip: Although you can drink functional drinks in moderation, you can't habitually drink functional drinks as water, and there is no need to drink them without extra exercise or physical exertion.