Don't drink coffee from metal cups
Metal cups, such as stainless steel, are more expensive than ceramic cups. The metal elements contained in the composition of the enamel cup are usually relatively stable, but in an acidic environment, the metal elements may be precipitated, and it is not safe to drink acidic beverages such as coffee and orange juice.
Disposable paper cups hide potential carcinogens
Disposable paper cups only look hygienic and convenient. In fact, the qualified rate of the product cannot be judged, and whether it is clean and hygienic can not be identified with the naked eye. From an environmental point of view, disposable paper cups should be used as little as possible. Some paper cup manufacturers add a large amount of fluorescent whitening agent to make the cup look whiter. It is this kind of fluorescent substance that can cause cells to mutate, and once it enters the human body, it will become a potential carcinogen.
The healthiest material - glass
Of all cups, glass is the healthiest. The glass does not contain organic chemicals during the firing process. When people drink water or other beverages from the glass, they don't have to worry about the chemicals being drunk into their stomachs. Moreover, the glass surface is smooth and easy to clean, preventing bacteria and Dirt is not easy to breed on the wall of the cup, so it is the healthiest and safest for people to drink water from a glass.
