What cup is the healthiest for drinking water?

The Secretary-General of the International Food Packaging Association said that choosing a cup is not a trivial matter, because it will affect your health. When drinking water, you should first choose a glass. Don't think that glass is just transparent and beautiful. Among all the cups made of materials, the glass is the healthiest. Glass contains no organic chemicals. When people drink water or other drinks from a glass, they don't have to worry about chemicals being drunk into their stomachs, and the glass surface is smooth and easy to clean, so it is the healthiest and safest for people to drink water from a glass. Ceramic cups coated with colorless glaze are both thermal insulation and safe. Ceramic cups coated with colorless glaze are also very healthy, especially the inner wall should be colorless. Not only the material is safe and resistant to high temperature, but also the heat preservation effect is better. Drinking hot water or tea is a good choice. Don't drink coffee in a metal cup, such as stainless steel, which is more expensive than a ceramic cup. Metal elements contained in enamel cups are usually stable, but they may be dissolved in acidic environment, so it is not safe to drink acidic drinks such as coffee and orange juice. Disposable paper cups or disposable paper cups with hidden carcinogens just look hygienic and convenient. In fact, the product qualification rate can't be judged, and whether it is clean or not can't be recognized by naked eyes. From the perspective of environmental protection, disposable paper cups should be used as little as possible. Some paper cup manufacturers add a lot of fluorescent brighteners to make the cups look whiter. It is this fluorescent substance that can mutate cells, and once it enters the human body, it will become a potential carcinogen; Secondly, those unqualified paper cups are generally soft and easy to deform when poured into water. Some paper cups are poorly sealed, and the bottom of the cup is easy to seep, which makes it easy for hot water to burn your hands. What's more, if you gently touch the inside of the paper cup with your hand, you can feel fine powder on it, and it will turn white when you touch it with your fingers. This is a typical inferior paper cup. Plastic cups are the easiest to hide dirt and shelter evil people. Use colored cups. Beware of heavy metal poisoning. Colorful cups are attractive, but it's best not to use them.