What are the benefits of drinking green tea? First of all, we must understand the ingredients of green tea. It has been confirmed by modern scientific research that green tea contains more than 450 kinds of organic compounds and more than 5 kinds of inorganic minerals/kloc-0. Most of these ingredients have the effects of health care and disease prevention. 1, reduce fat and lose weight, and prevent cardiovascular and cerebrovascular diseases. The relationship between drinking tea and losing weight is very close. As early as more than 2,000 years ago, Shennong Materia Medica mentioned the role of tea in losing weight: "Take it for a long time, feel at ease and benefit qi ...... intellectual man fit is not old". Modern scientific research and clinical experiments have proved that drinking tea can reduce blood lipid and cholesterol, and make the body lighter. This is because of the comprehensive coordination of phenolic derivatives, aromatic substances, amino acids and vitamins in tea, especially the comprehensive effect of tea polyphenols, theanine and vitamin C, which can promote fat oxidation, help digestion, reduce fat and lose weight. In addition, tea polyphenols can dissolve fat, while vitamin C can promote cholesterol excretion. Green tea itself contains tea gan ning, which improves the toughness of blood vessels and makes them not easy to rupture. A study published in Circulation magazine of American Heart Association in May 2002 showed that drinking tea regularly can reduce the risk of death from heart disease. Researchers at Harvard Medical School in the United States * * * conducted a follow-up survey of 1900 patients with heart disease, mainly elderly people over 60 years old. The survey found that those patients who drink more than 14 cups of tea per week on average have a lower risk of death within about three and a half years after a heart attack than those who do not drink tea. The study also shows that even if patients drink less than 14 cups of tea per week on average, it may reduce the death rate of heart disease by 28%. 2. Anti-cancer. Tea polyphenols and caffeine, the components contained in green tea, have a comprehensive effect, not only refreshing and refreshing, but also improving human immunity and anti-cancer. In recent years, the American Chemical Association always found that tea not only has inhibitory effect on digestive system cancer, but also has inhibitory effect on skin, lung and liver cancer. It is confirmed by scientific research that the organic anticancer substances in tea mainly include tea polyphenols, theophylline, vitamin C and vitamin E; Inorganic anticancer elements in tea mainly include selenium, molybdenum, manganese and germanium. Chinese and Japanese scientists believe that catechins in tea polyphenols have the best anticancer effect. 3. Anti-poison sterilization. The use of tea as a good medicine for detoxification can be traced back to the ancient Shennong era (about 2737 BC). The saying that "Shennong tasted a hundred herbs, and when he encountered 72 poisons every day, he got rid of it with tea" was recorded in Records of Historian san huang, Huai Nan Zi Xiu Wu Xun, Materia Medica Yanyi and other books. Cha Sheng Lu Yu pointed out in his Tea Classic, the first authoritative tea book in the world more than 200 years ago (AD 780), that "tea is best used as a drink because it is cold ... if you feel hot, thirsty, stuffy, headache, eye fatigue, limb fatigue and joint discomfort. The above symptoms listed by Lu Yu are very close to typical pneumonia or suspected cases. Chen Zangqi, a medical scientist in the Tang Dynasty, wrote in the Collection of Materia Medica: "Quench thirst and eliminate epidemic diseases. Expensive tea is also. " Liu Zhenliang, a famous eunuch, also listed "eliminating furuncle with tea" as one of cha de in Ten Virtues of Tea. Since the Tang Dynasty, there has been a new narrative in treatment of tea studies in the past dynasties, which is similar to detoxification and sterilization with tea. However, due to the underdeveloped science at that time, diseases with strong infectivity and epidemic were collectively referred to as "plague" or "furuncle". Although the bacteria and viruses were not specified, it has been confirmed that drinking tea is helpful to detoxification and sterilization. The research on the health care function of tea has been deepened in modern medical circles. In 2003, American scientists reported in the Journal of the American Academy of Sciences that "the chemical substance named' theanine' in tea can enhance the human body's ability to resist infection by five times". 4. Longevity. The anti-aging effect of green tea on human body is mainly reflected in the coordination of several effective chemical components and various vitamins, especially tea polyphenols, caffeine, vitamin C, aromatic substances, lipopolysaccharide, etc., which can enhance human myocardial activity and vascular elasticity, inhibit arteriosclerosis, reduce the incidence of hypertension and coronary heart disease, enhance immunity, thus resisting aging and making people live longer. According to medical research, tea polyphenols can not only reduce the contents of cholesterol and triglyceride in blood, but also enhance the toughness and elasticity of microvessels and reduce blood lipids, which is extremely useful for preventing and treating common diseases of middle-aged and elderly people such as hypertension and cardiovascular disease. Tea contains selenium, and it is organic selenium, which is more easily absorbed by people than selenium in grain and oil. Dr. Richard Paixiwat of the United States believes that adding selenium into food, combining with vitamin C and vitamin E, can prolong people's life, and tea is rich in these strange elements that are beneficial to life. Life, old age, illness and death are irresistible laws. The so-called "immortality" is false, and "longevity" is true. There are countless cases of drinking tea for a long life. According to Song? 6? 1 Qian Yi's "Southern New Book" records that in the third year of Tang Xuanzong (AD 849), there was an old monk in his thirties in Dongdu (now Luoyang, Henan Province). The emperor asked him the way of keeping in good health, and he said, "I am a young minister, and I know nothing about medicine, but I am good at tea. I only want tea everywhere, or I will meet you every day." Qianlong was the longest-lived feudal emperor in China, who lived to 89 years old after 60 years in office. Drinking tea was one of his health-preserving recipes. Su Juxian, the oldest longevity star in Shanghai and the last scholar in the late Qing Dynasty, insisted on drinking tea as a big habit in his life, which exceeded the symbol of "tea" 108 (according to the Chinese character "tea", the radicals can be broken down into "Mi" and "eighty-eight", which is 108. Shanghai 1994, Yuan Dunzi and Wang Huiqin, both of whom were awarded the title of "Birthday Birthday Couple", are 104 years old. Their longevity is also "drinking tea every day", and they usually drink tea at 0: 00 am and 3: 00 pm every day. Born in 1896, Zhang Shun, a centenarian from Gaozhou, Guangdong, has four noes: no smoking, no drinking, no gluttony and no picky eaters; "Sixi" likes coarse grains, sweet potatoes, jealousy and tea. 1898 Born in Fengshun County, Guangdong Province on August 20th, Zhang Lanhua, a hard-working woman who has gone through many vicissitudes, does not smoke, drink or drink tea. Professor Wu Juenong, honorary chairman of the Chinese Tea Society, who was honored as "contemporary Cha Sheng", celebrated his 90th birthday. When he talked about the mystery of his and his wife's longevity, he gave the answer of drinking more tea and eating more fruits. (Press: Wu Lao lived to be 9 1 year old, and his wife Chen Xuanzhao lived to be 98 years old. ) A famous mathematician, consultant of Shanghai Tea Society, and Professor Su Buqing of Fudan University will live to 10 1 years old, and drinking tea every morning after breakfast is his way to health and longevity. Mr. Cui Guiyong, President of Luyu Tea Classics Research Association of Korea, was fond of drinking tea in daily life and lived to 100 years old (died on April 5, 2002). In the northwestern Indian city of Gapu 'er, there was an old man named Habibou Mian, whose age was officially recognized by the local government as 125. When the old man told the secret of his longevity, he talked about his eating habits. "I never smoke, and drinking tea is the only thing I am addicted to." There was a farmer's birthday girl named Zanadi Michal in Egypt. He drank more than six cups of tea every day, but he was lucky enough to live to the age of 130! Deng Xiaoping, a politician with three ups and downs, loves to drink green tea. Deng Xiaoping's sister Deng Xianqun once recalled Deng Xiaoping's life during the Cultural Revolution and said, "My eldest brother likes drinking tea. He likes to drink green tea produced in Sichuan and Anhui, and sometimes drinks West Lake Longjing tea. Tea is still relatively expensive. He put a lot of tea in his cup, which will take up two-thirds of the cup when it is completely soaked. My eldest sister-in-law makes a strong cup of tea for my eldest brother every morning. After my eldest brother has finished drinking, my eldest sister-in-law will continue to drink the remaining tea roots and make him another cup in the afternoon. " The ancients called tea a medicine for all diseases. Tea can preserve health and prolong life, but it is important to persist and persevere, and you will see the effect. Drinking tea has a hundred benefits but no harm. Although drinking green tea is good, there are still many regrettable places: 1, green tea is easy to oxidize and difficult to keep. Tea polyphenols in green tea are strong antioxidants, so it is easy to nourish itself. Although it is inconclusive that tea polyphenols are the reason why drinking tea can make people live longer, the tea brewed from oxidized old tea is coffee red and has no tea fragrance, and its taste is greatly deteriorated. 2, most people drink tea very weakly, and they are not used to strong tea. Therefore, for health, the amount of tea they drink is not enough. 3. Beware of "urea tea". What is "urea tea"? A few years ago, tea was in demand, and tea farmers in some places had "technical innovation". Every morning, after picking tea, urea solution was sprayed on the tea trees in the afternoon, and the tea grew very long the next morning. This cycle led to a sharp increase in tea output. Therefore, when drinking tea, you should recognize the brand and see the quality, and you must not be greedy for cheap.