Does tea cause insomnia?

Tea does not necessarily lead to insomnia, mainly related to factors such as the choice of tea, the time of drinking tea and the concentration of tea. If the selected tea contains less caffeine and polyphenols, such as fermented tea or cooked tea, it will not cause insomnia after drinking. And the time of drinking tea should be selected in the morning, which can play a refreshing role to a certain extent and help improve work efficiency. However, if the selected tea contains more tea polyphenols and caffeine components, and it is drinking tea before going to bed, it is easy to improve the nerve excitability of the human body, resulting in insomnia. In addition, attention should be paid to the concentration of tea to prevent excessive, should be based on drinking light tea.