Tea is a healthy drink for all ages, but it is not suitable for preschool children.
Tea contains theophylline and other substances, which easily excites the central nervous system. Children are in the stage of growth and development, and the nervous system of the body is weak in inhibiting excitatory substances, so it can't adjust itself as effectively as adults. Therefore, after children drink tea, there will be a phenomenon of accelerated heartbeat, which may lead to excessive physical exertion. If you drink tea at night, it will also cause insomnia, frequent urination and other problems for your child, which will affect your sleep and thus your development. Tea contains citric acid and theophylline, which will inhibit the absorption of some trace elements, such as calcium, zinc, iron and magnesium. Therefore, children drinking too much tea or strong tea may lead to the lack of trace elements in the body and even malnutrition. Of course, occasionally drinking a small amount of weak tea for children will not do much harm to the body. If you often give your child tea or strong tea, it will affect your child's health. However, it can be advocated to gargle with tea after meals, which has a good effect on preventing dental caries in children.