The principle behind selenium-enriched mineral water, selenium-enriched rice, selenium-enriched pears, and selenium-enriched tea is similar. The key is in the "selenium."
Enshi in Hubei Province is known as the "World Selenium Capital," and many selenium-enriched products have originated there in recent years. Enshi also boasts abundant selenium-rich natural water and mineral water resources, making it a leading example of green economy.
The trace element selenium also follows a closed loop of "air-water-soil-plant-animal." Selenium in water and soil is absorbed by plants and animals; humans, being animals, are in the last link. However, selenium has some unique characteristics.
First, it is different from cadmium. Cadmium acts as a toxic target for the body; cadmium-enriched rice is undeniably toxic. Second, as an essential trace element for the human body, selenium differs from calcium and magnesium ions. Exceeding the limit, selenium is toxic, even fatal. If a comparison must be made, selenium is somewhat similar to fluoride.
Selenium-enriched mineral water refers to rainwater infused with selenium from rocks or soil, containing a higher-than-average level of selenium. There are two common types of selenium-enriched water: selenium-enriched natural water and selenium-enriched natural mineral water, distinguished by their selenium content.
Ordinary mineral water, on the other hand, is deep groundwater, a type of water containing minerals. It is either naturally flowing from the surface or artificially extracted and remains unpolluted within a specific area.
Distilled water, as we commonly refer to it, is purified water produced through distillation. Natural mineral water, however, requires minimal treatment and is typically bottled locally.
Mineral water contains various trace elements, and drinking it can replenish many of these essential trace elements for the human body.