Folklore circulates “a cup of tea in the morning, starve to death drug sellers” proverb, visible tea on the health effects of people is extraordinary ~ but, about drinking tea, you may still have some knowledge and do not understand, especially which tea must not drink? How to make tea more health? These nine kinds of tea can not drink 1, spoiled tea tea is not easy to properly store, easy to absorb moisture and mold, and some people out of love tea, savings, can not afford to discard the tea has mold. Spoiled tea contains a large number of harmful substances and germs, is absolutely not drinkable. High-quality tea after brewing if left too long, the tea will also be oxidized and microbial reproduction and deterioration, so the tea can not be consumed again. 2, the first tea modern tea in the planting, processing, packaging process will inevitably be contaminated by pesticides, fertilizers, dust and other substances. The first tea is actually washing tea water, should be poured out as soon as possible and then rushed into the boiling water, so that the tea is the most hygienic. Experts said that the quality and safety of Chinese tea 80% out of pesticide residues. Pesticide residues in tea may not only cause chronic poisoning, but also cause acute poisoning, especially for children is more harmful. 3, burnt tea tea, fried over the fire, nutrition has been lost, the flavor is not good. 4, long time tea brewing time is too long, tea polyphenols, lipids, aromatic substances, such as automatic oxidation, not only the tea color dark, poor taste, low aroma, loss of tasting value, but also due to the tea in the vitamin C, vitamin P, amino acids, etc. due to the oxidation of the reduction of the nutritional value of the tea greatly reduced; at the same time, due to the tea shelved for too long, by the pollution of the surrounding environment, the tea microorganisms (bacteria and bacteria) a greater number, very much less; the tea is not a good choice, but it can cause acute poisoning. ) number is higher, very unhygienic. 5, cold tea Tea should be wet and hot and drink, warm tea, hot tea can make people feel refreshed, bright eyes and ears; cold tea on the body has stagnant cold, phlegm side effects. 6, hot tea Tea is generally brewed with high temperature water, but not in the water temperature is too hot to drink. Too hot tea on the human throat, esophagus and stomach stimulation is strong. If you drink too hot tea for a long time, it may cause lesions in these organs. 7, string flavor tea is tea and other flavored things together for a period of time, changed flavor. Some flavors are toxins, such as paint, camphor flavor. 8, strong tea Strong tea contains a large amount of caffeine, theophylline, etc., stimulating strong, drinking strong tea can lead to insomnia, headache, tinnitus, eyes, on the stomach and intestines is not good, and some people will produce vomiting after drinking. 9, raw tea The so-called raw tea refers to the killing of green tea without kneading and drying directly after the drying of green tea. The appearance of this tea is natural green and green, the composition and the compounds contained in the fresh leaves are basically the same, the low boiling point of aldehydes and alcohol compounds conversion and volatilization is not much, the aroma with a serious green gas. Elderly people drink this green tea, the gastric mucosa irritation is very strong, easy to produce stomach pain after drinking; young people will also feel upset stomach after drinking, which is usually referred to as “scraping the stomach”. Mistakenly purchased this raw tea, it is best not to drink directly, can be placed in a non-greasy iron pot, slowly frying with the fire, baked to raw green gas, to produce a mild chestnut aroma can be consumed.