Dr. Hau cites recommendations from some scientists, if using too much tea with a strong concentration can have a bad effect. Caffeine in tea can reduce the amount of calcium absorbed in the intestine and reduce calcium reabsorption in the renal tubules, causing osteoporosis. Tannins in tea reduce iron absorption, so it is easy to cause anemia.
“Drinking tea a lot has the risk of making the body iron deficient, leading to anemia,” the nutritionist said. Tea also reduces zinc absorption, so it is not beneficial for young children, especially malnourished children, because the need for zinc is very high.
“Anemic people who are taking iron supplements, people who are taking zinc supplements, young children and pregnant women who are in need of iron and zinc should not drink tea,” Dr. Hau recommended.
Tea has a thermogenic effect, so if you have a fever, you should not use tea, and tea also reduces the effect of antipyretic drugs.
For those who have difficulty sleeping, especially young children, tea should not be used, especially in the evening because of its euphoric effect, making it more difficult to sleep.
People with a history of peptic ulcers should not use tea because tea has the effect of increasing gastric secretion. Young children should not use tea because the protective mucus layer of the stomach is still fragile, prone to ulcers. Tea is also a cause of constipation in children, pregnant women, the elderly or people with weak bowel movements.
In young children, it is necessary to weigh the beneficial effects of antioxidants once morest some adverse health effects. Young children have high nutritional needs, need protein, iron, zinc, calcium… but tea reduces the absorption of these substances.
In addition, the child’s digestive system is not yet complete, and is prone to digestive disorders when drinking caffeine; Children also need deep sleep to grow. Therefore, taking psychostimulants such as tea and coffee is not beneficial.
“Not to mention, tea for children often comes with milk and pearls, fruit syrups contain a lot of sugar, or add a lot of sugar to cover the acrid taste, so it is easy to cause infection if not processed and preserved. carefully, it is easy to cause obesity by putting in too much empty energy, which is not beneficial for children,” said Dr. Hau.
Vo Thu