After a lifetime of drinking water, let's test your knowledge: What's the best cup for drinking water?
Glass cups, enamel cups, ceramic cups, plastic cups, stainless steel cups, iron cups, aluminum cups, paper cups... When we go shopping for water cups, all kinds of cups catch our eye, especially those with bright colors and unique designs that really stand out. We end up getting overwhelmed by all the choices.
Let me tell you: glass cups should be your top choice for drinking water.
Don't assume glass cups are merely transparent and pretty. Among all cup materials, glass is the healthiest option. Glass contains no organic chemicals, so when drinking water or other beverages from a glass cup, you needn't worry about ingesting harmful substances. Plus, glass surfaces are smooth and easy to clean, making glass cups the healthiest and safest choice for drinking water.
Second, experts also recommend using enamel cups.
Made through a high-temperature enameling process exceeding 1,000 degrees Celsius, enamel cups contain no harmful substances like lead and are safe for daily use.
The ubiquitous plastic cup poses the most hidden dangers.
While colorful cups may be visually appealing, the vibrant pigments they contain harbor significant risks. When hot water or beverages with high acidity or alkalinity are poured into these cups, toxic heavy metals like lead from the pigments can easily dissolve into the liquid. Consuming such chemically contaminated liquids can harm human health.
Plastic often contains added plasticizers with toxic chemicals. When used for hot water or boiling water, these toxins can easily leach into the liquid. Additionally, the microscopic structure of plastic contains numerous crevices where contaminants can hide. Experts therefore advise selecting only cups made from food-grade plastic that meets national standards.
What about magnetized cups and energy cups?
Another significant category within the water cup family includes products marketed as "magnetized cups" or "energy cups."
Medical reports worldwide do suggest magnetized water offers health benefits, but not all magnetized water is beneficial.Only negatively magnetized water can enhance physiological functions and provide health benefits, while positively magnetized water should be consumed sparingly. Most magnetized cups available on the market use ordinary magnets without distinguishing polarity. Therefore, consumers should carefully identify and select cups made from single-pole magnetic plates (negative polarity).
"Energy cups" theoretically also enhance bodily functions and offer health benefits. However, many manufacturers currently producing "energy cups" have not conducted rigorous physiological efficacy testing for these functions, exaggerating the cup's effects—some even claiming it can cure all diseases. Experts advise consumers to verify legitimate certifications from relevant authorities when purchasing "energy cups" marketed for health benefits, and not to blindly follow trends.
Extended Reading: 80% of People Don't Clean Their Cups Properly—Washing the Bottom Matters
We use cups daily, but do you clean them every day? Where should you focus when washing, and what cleaner works best? These seemingly simple questions are closely tied to health.
Survey results reveal that among 3,849 respondents, only 9.6% wash cups immediately after use. 40.2% wash daily, 29.7% wash every few days, and 20.5% wash even less frequently. Cleaning priorities vary significantly.68% focus on cleaning the rim where lips touch, 24.1% prioritize the inner surface, 5.6% mainly clean the bottom, and 2.3% concentrate on the outer surface. Cleaning methods also vary: 52.8% simply rinse with water, 23.0% scrub thoroughly, and 24.2% use dish soap or other cleaners.
Ideally, cups should be washed immediately after each use. If this seems too troublesome, they should at least be cleaned once daily—preferably before bedtime—and allowed to air dry. When cleaning, focus not only on the rim but also the bottom and sides, especially the bottom, which often accumulates bacteria and grime due to infrequent cleaning.Professor Cai Chun specifically advises women that lipstick contains chemical ingredients and readily absorbs harmful substances and pathogens from the air. Drinking from a cup with lipstick residue can introduce these contaminants into the body. Therefore, lipstick stains on the rim must be thoroughly cleaned. Simply rinsing the cup with water is insufficient; using a brush is recommended. Additionally, since dish soap primarily consists of chemical synthetic agents, it should be used cautiously and rinsed thoroughly with clean water.For cups heavily stained with grease, grime, or tea residue, apply toothpaste to a brush and scrub the interior thoroughly. Toothpaste contains both detergents and fine abrasives that effectively remove residue without damaging the cup.