Drinking water from these 4 cups is very dangerous and can easily cause cancer and poisoning

1. Disposable paper cups may contain potential carcinogens

Disposable paper cups only look hygienic and convenient, but in fact the product qualification rate is impossible to judge, and whether they are clean and hygienic cannot be identified with the naked eye. From an environmental perspective, disposable paper cups should be used as little as possible. Some paper cup manufacturers add a large amount of fluorescent brightener to make the cups look whiter. It is this fluorescent substance that can cause cells to mutate and become a potential carcinogenic factor once it enters the human body. Secondly, unqualified paper cups are generally soft in body and easily deformed after pouring water into them. Some paper cups have poor sealing and water easily seeps from the bottom of the cup, which can easily cause hot water to scald your hands. What's more, when you gently touch the inside of the paper cup with your hand, you can feel a fine powder on it, and the place where your fingers touch will turn white. This is a typical inferior paper cup.

2. Plastic cups are most likely to harbor dirt

Plastic cups should also be unwelcome. Because plasticizers are often added to plastics, which contain some toxic chemicals, when you use a plastic cup to hold hot water or boiling water, the toxic chemicals will easily be diluted into the water. In addition, the internal microstructure of the plastic has many pores, which hide dirt. If it is not cleaned properly, it will easily breed bacteria. Therefore, when purchasing plastic cups, be sure to choose water cups made of food-grade plastic that meets national standards.

3. Colorful water cups can easily cause heavy metal poisoning

Colorful cups are attractive, but it’s best not to use them. Because there are huge hidden dangers in those bright pigments, especially when the inner wall is coated with glaze. When the cup is filled with boiling water or highly acidic or alkaline beverages, the toxic heavy metal elements such as lead in these pigments will easily dissolve in the liquid. When people drink the liquid containing chemicals, it will cause harm to the human body.

4. Coffee will dissolve when drinking from a metal cup

Metal cups, such as stainless steel, are more expensive than ceramic cups. The metal elements contained in the composition of enamel cups are relatively stable under normal conditions, but they may dissolve in an acidic environment, so it is not safe to use them to drink acidic beverages such as coffee and orange juice.