Drinking tea in moderation is good for your health, but if you drink it in excess or without restraint, it will definitely bring harm to your health. For the elderly, pregnant women, young children and other specific groups, it is better to drink less. ?
First, tea contains a lot of oxalic acid, which easily reacts with calcium excreted in urine to generate calcium oxalate, which in turn causes urinary calculi. At the same time, tea trees will be sprayed with pesticides in the growth process, and pesticides are easy to remain on the surface of tea leaves, and untreated tea leaves are easy to carry residual pesticides.
Therefore, tea washing is a necessary procedure before drinking tea, and there is also a saying in life that "don't drink the first sip of tea". Drinking tea on an empty stomach can also lead to dizziness, palpitation and trance.
Second, tea contains caffeine, which will lead to the loss of calcium and increase the risk of osteoporosis; Can freely enter the fetus through the placental barrier, causing direct harm to the fetus; Caffeine is metabolized by the liver, which will increase the burden on the liver once it is taken in excess; Caffeine easily excites people, and people with neurasthenia who drink too much tea can cause insomnia and headache.
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