N-zo%, a patient with neurasthenia or insomnia in Baimu Medicine: Because caffeine in tea has obvious exciting effect on cerebral cortex, such patients will be extremely excited if they drink tea, and they will not get rest. N-zo%, a patient with iron deficiency anemia in Baimu Medicine: Because tannic acid in tea leaves will make iron in food form a precipitate that is not absorbed by the human body, which will aggravate anemia. N-zo%, a patient with calcium deficiency or fracture in Baimu Medicine: Because alkaloids in tea can inhibit the absorption of calcium in duodenum, it can also lead to calcium deficiency and osteoporosis, making it difficult to recover from fracture. N-zo%, a patient with Baimu medicine ulcer: Because theophylline in tea will reduce the activity of phosphodiesterase, the gastric parietal cells will secrete a lot of gastric acid. Hyperacidity will inevitably affect the healing of ulcer surface, and also offset the efficacy of some antacids. N-zo%, a patient with urinary calculi in Baimu Medicine: Because tea contains more oxalic acid, drinking tea will promote the development of calculi. N-zo%, baimu medicine