Glass, enamel, ceramic, plastic, stainless steel, iron, aluminum, paper... When we go to the mall to buy a water cup, all kinds of cups will come into our sight. Especially those cups with bright colors and unique shapes are more eye-catching, making it hard to choose.
Let me tell you, glass should be your first choice for drinking water.
Don't think that glass cups are just transparent and beautiful. Among all materials, glass cups are the healthiest. Glass cups do not contain organic chemicals. When people drink water or other beverages from a glass cup, there is no need to worry about chemicals being ingested. Moreover, the glass surface is smooth and easy to clean, so drinking from a glass cup is the healthiest and safest.
In addition, experts also recommend using enamel cups because they are made through a process of vitrification at thousands of degrees Celsius and do not contain harmful substances like lead, so they can be used with confidence. However, experts have raised questions about cups made from other materials.
Colorful cups are very popular, but in fact, the bright pigments hide great dangers. When cups are filled with boiling water or acidic or highly alkaline beverages, toxic heavy metal elements like lead in these pigments can easily dissolve into the liquid. When people drink the liquid containing chemicals, it can be harmful to the human body. Plastic cups often contain plasticizers, which include some toxic chemicals. When using a plastic cup for hot or boiling water, these toxic chemicals can easily leach into the water. Furthermore, the internal microstructure of plastic has many crevices where dirt can hide. Therefore, experts remind that when choosing a plastic cup, you must select one made of food-grade plastic that meets national standards.
In addition, there is a large group in the water cup family: the so-called "magnetized cups" and "energy cups" promoted by merchants.
Medical reports from home and abroad do state that magnetized water is very beneficial to human health, but not all magnetized water is beneficial. Only negatively charged magnetized water can improve human physiological functions and have a health-preserving effect, while positively charged magnetized water should not be consumed in large quantities.
The magnetized cups we see on the market mostly use ordinary magnets with indistinguishable positive and negative poles. Therefore, when consumers choose a magnetized cup, they should carefully identify and select one made with a single-pole (negative) magnet.
Principally, "energy cups" can also improve human body functions and have a health-preserving effect. However, many manufacturers of "energy cups" on the market today have not conducted practical physiological verification of this function, exaggerating the effects of "energy cups," and some even claim they can cure all diseases. Experts remind consumers that when purchasing "energy cups" with health benefits, they should recognize the official certifications from the relevant authorities and not follow blindly.