Is it harmful not to clean a cup of tea dirt for three years? Is it harmful to people?

1, many people usually like to drink tea, but long-term use of tea cups is easy to produce tea stains. Generally, tea stains in teacups are harmful to people. Due to the long-term use of tea cups, the tea stains produced in them contain some heavy metals such as mercury and cadmium, and some of them are easy to produce carcinogens, which are harmful to human health.

2. If you don't clean the teacup for a long time, it is easy to cause the formation of harmful substances, and the carcinogens contained in the tea scale usually adhere to the surface of the teacup. If people take this tea for a long time, it will easily stimulate the digestive system of the human body. It will also increase the burden of liver function and affect health.

3. At the same time, if the teacup is not disinfected and cleaned for a long time, it is easy to produce a lot of scale, and the harmful substances inside will also stimulate the nervous system of the human body and even cause some complications. It is best to wash the teacup carefully after drinking tea every time to promote the healthy development of human body.