Drinking green tea on an empty stomach has an effect on the stomach;
1. Because green tea is unfermented, it retains more natural substances in fresh leaves, among which tea polyphenols and caffeine can retain more than 85% of fresh leaves. The ingredients in green tea do have anti-aging, anti-cancer, anti-cancer, sterilization and anti-inflammatory effects, but drinking on an empty stomach will have adverse effects on the human body.
2. Green tea retains more antioxidants, such as tea polyphenols and caffeine. If you drink green tea on an empty stomach or when you are hungry, some active substances in the tea will combine with protein in the stomach, which will stimulate the stomach, easily hurt the stomach and cause stomach trouble.
3. People with gastric and duodenal ulcers who drink green tea on an empty stomach or drink too strong green tea will stimulate gastrointestinal mucosa due to its anticoagulant effect, and may also cause indigestion or constipation. In severe cases, it may slightly increase the probability of gastric bleeding. In addition, drinking green tea on an empty stomach is more likely to cause symptoms such as hand shaking, excitement and even headache.
4, green tea is known as the "national drink", although drinking green tea on an empty stomach has a certain impact on the human body, but green tea contains health benefits such as clearing away heat and relieving summer heat, preventing cancer and preventing radiation. As long as you drink it reasonably and scientifically, there are still many benefits to drinking green tea in summer.
5. Note: Because the contents of natural substances in green tea, especially caffeine and tea polyphenols, are relatively large, these two substances have relatively great stimulation to the stomach. For people with weak constitution and bad stomach, no matter how good the drink is in summer, cold green tea should not be drunk, and female friends during physiological period and pregnancy should not drink green tea.
Extended data:
Benefits:
1, anti-aging:
It is helpful to delay aging. Tea polyphenols have strong antioxidant and physiological activity, and are free radical scavengers in human body. Studies have proved that 1 mg tea polyphenols is equivalent to 9 micrograms of superoxide dismutase in scavenging excessive free radicals harmful to human body, which is much higher than other similar substances.
2, disease inhibition:
Tea polyphenols can inhibit cardiovascular diseases and play an important role in human fat metabolism. The human body has cardiovascular diseases such as high cholesterol and triglycerides, such as fat deposition on the inner wall of blood vessels and atherosclerotic plaques formed after vascular smooth muscle cells proliferate.
3, antiviral bacteria:
Tea polyphenols have strong convergence, obvious inhibition and killing effects on pathogenic bacteria and viruses, and obvious anti-inflammatory and antidiarrheal effects. Many medical units in China use tea preparation to treat acute and chronic dysentery, amebic dysentery and influenza, and the cure rate is about 90%.
4, beauty and skin care:
Tea polyphenols are water-soluble substances, which can remove facial greasy, astringe pores, sterilize and disinfect, resist skin aging, and reduce the damage of ultraviolet rays in the sun to the skin.
5. Relieve fatigue:
Green tea contains powerful antioxidants and vitamin C, which can not only eliminate free radicals in the body, but also secrete hormones against stress. A small amount of caffeine contained in green tea can stimulate the central nervous system and cheer up the spirit. Because of this, we suggest drinking green tea in the morning to avoid affecting sleep.
Reference: Green Tea-Baidu Encyclopedia