Tea has the effect of nourishing, lifting, the general public appropriate drinking tea on the body has benefits, but tea is not everyone drink the benefits of the following groups of people should not drink tea.
People with constipation
Tea contains catechol substances, the gastrointestinal mucosa has a certain astringent effect, so it will affect the digestion and absorption of food, easily causing dry stools, causing or aggravating constipation.
Insomnia of neurasthenia
Caffeine in tea has a significant excitatory effect on the human nerve center, so there is a refreshing effect, especially when drinking strong tea, will make the brain has been in a state of excitement and not rest, so neurasthenia or insomnia people drink tea, will aggravate the condition.
Anemic people
Tea contains tannic acid, tannic acid and iron chemical reaction to generate a substance that can not be absorbed by the body, so people with anemia should not drink tea, otherwise it will aggravate the symptoms of iron deficiency anemia.
People with stomach ulcers
There is phosphodiesterase inside the stomach that inhibits the secretion of gastric acid by the stomach wall cells, and theophylline in tea will react with phosphodiesterase and reduce its activity, making the stomach wall cells secrete a lot of gastric acid, which is not conducive to the improvement of gastric ulcer.
People with calcium deficiency or fracture
The alkaloids in tea will inhibit the digestion and absorption of calcium in the duodenum, and also promote the excretion of calcium in the urine, making the body less calcium in and more calcium out, which will easily aggravate calcium deficiency or osteoporosis, making it difficult for fracture patients to recover.
Patients with joint stones
Tea has more oxalic acid, which can easily combine with calcium in the body and aggravate the development of stone disease. So patients with stones should not drink tea, especially strong tea.
Patients with high blood pressure and heart disease
Caffeine in tea has a strong cardiac excitatory effect, and the excitement process will affect the normal work of the body, accelerating blood circulation, so it will increase the burden on the heart, but also easy to cause a sudden increase in blood pressure.
Physiological women
Women should not drink tea during menstruation, lactation, pregnancy, menstruating women drinking tea is likely to cause dysmenorrhea; lactating women drinking strong tea will also affect the secretion of milk, which is not conducive to breastfeeding; pregnant mothers drinking strong tea will affect the fetus on the absorption of calcium, which affects the normal development of the fetus.
Young children should not drink tea
Because tea contains theophylline and other substances, it is easy to excite the central nervous system, and infants and young children's bodies are in the developmental stage, the nervous system for the excitatory substances inhibitory ability is weak, will cause insomnia, frequent urination and other problems, affecting sleep, and then affect the development.
