Tea is a favorite drink for many men. Drinking tea is not only to enjoy the sweet aroma, but also to relax the tense nerves, and even to promote a job. In fact, drinking tea is also good for health. Drinking tea and green tea for a long time is beneficial to cardiovascular health. Professor Wu Wei, the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, said that the benefits of tea on cardiovascular health have been widely recognized. An observational study involving nearly 100000 people in 15 provinces of China, with a median follow-up of 7.3 years, found that tea drinking was associated with a lower risk of cardiovascular disease and death, especially among people who drank green tea and drank tea for a long time. Another 13 year follow-up study involving nearly 70000 people also reported the association between green tea and low risk of death from cardiovascular disease. In addition, people who drink tea for a long time have higher HDL-C (commonly known as "good cholesterol") levels, and the risk of cardiovascular disease is 8% lower than other people. The effects of tea on cardiovascular system include: regulating lipid, anti inflammation, improving vascular endothelial function, and delaying atherosclerosis; Dilating vascular smooth muscle and improving microcirculation; Scavenging oxygen free radicals and inhibiting lipid peroxidation; Anti platelet aggregation and prevention of thrombosis; diuresis; Increase cardiac output; Resist high blood pressure. In addition, tea can also stimulate the brain, eliminate fatigue, improve immunity, fight viruses, and prevent cancer. According to Professor Huang Yanshou, the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, tea should be selected according to people, time and place. Traditional Chinese medicine emphasizes "three factors": people, time and place. Tea drinking should also be adjusted according to the cold and warm constitution, cold and warm seasons and hot regions. Those who are physically strong and easy to get angry should drink green tea, white tea, raw Pu'er, etc; Shan Cong and cooked Pu'er can be selected for those who are old and weak in health. In spring, you can drink scented tea (such as jasmine tea and rose tea) to help yang qi develop; Drinking green tea and Mingqian tea in summer can stimulate saliva and quench thirst; In autumn, drinking osmanthus tea and lemon black tea can relieve the dryness of autumn; Drinking black tea, cooked Pu'er tea, Dancong tea, etc. in winter can warm the spleen and stomach, or you can add dried tangerine peel or ginger slices to cooked Pu'er tea to resist external cold. Who should not drink tea? ① Insomniacs should not drink traditional tea. It is recommended to drink jasmine, osmanthus and other flower tea. ② Patients with peptic ulcer should not drink tea, especially strong tea, which will damage the mucous protective layer of gastric mucosa. ③ Anemia patients should not drink tea, because the tannic acid in tea combines with iron, which can inhibit the absorption of iron. ④ Patients with heart failure should not drink tea to avoid insomnia, rapid heart rate and arrhythmia caused by sympathetic excitement. ⑤ After coronary heart disease is implanted in the stent, patients taking aspirin, clopidogrel and other antiplatelet drugs should not drink strong tea to avoid inducing peptic ulcer and gastric bleeding. When is it inappropriate to drink tea? ① As the saying goes, "Don't drink tea if you are hungry.". Drinking tea on an empty stomach will dilute gastric juice and damage gastric mucosa. ② When taking medicine, it is not appropriate to drink tea (take medicine) to avoid the interaction between tea and medicine and reduce the efficacy. ③ Don't drink tea before going to bed to prevent affecting sleep, because caffeine and theophylline can excite the central nervous system. (Outlook New Times)