Water is the source of life, a substance people must consume daily. Although everyone drinks water every day, how much do we really know about the proper way to drink it? In fact, not all water is beneficial to the human body. Below, the editor will introduce several types of water that you must never drink.
1. Raw Water
Raw water contains various harmful bacteria, viruses, and parasites that can be transmitted from animals to humans. Drinking raw water can easily cause acute gastroenteritis, viral hepatitis, typhoid, dysentery, and parasitic infections. Especially today, rivers, reservoirs, and well water are all polluted to varying degrees by industrial wastewater, domestic sewage, and pesticide residues. Drinking raw water in such conditions can more easily lead to diseases.
2. Aged Water
Commonly known as "stagnant water," this is water that has been stored for a long time without moving. Drinking this water often can, for minors, significantly slow down cellular metabolism and affect physical development; for middle-aged and elderly people, it can accelerate aging. In many places, the incidence of esophageal and stomach cancer is increasing daily. According to medical research, this may be related to long-term consumption of aged water.
3. Re-boiled Water
Re-boiled water is water that has been boiling on a stove all night or for a very long time, as well as water in an electric water heater that has been boiled repeatedly. Because it has been boiled for too long, this water contains high levels of non-volatile substances, such as heavy metals like calcium and magnesium, and a high content of nitrates. Drinking this water for a long time can interfere with a person's gastrointestinal function, causing temporary diarrhea and bloating. The toxic nitrates can also cause hypoxia in the body, and in severe cases, can lead to coma, convulsions, and even death.
4. Steamer Water
Steamer water is the leftover water from steaming foods like steamed buns. Especially when reused multiple times, the nitrate concentration in this water becomes very high. Drinking this water often, or using it to congee, can cause nitrate poisoning. The scale that often enters the body with the water can also cause digestive, nervous, urinary, and hematopoietic system disorders, and even premature aging.
5. Unboiled Water
The tap water people drink is disinfected and sterilized by chlorination. In chlorinated water, 13 harmful substances can be separated, among which halogenated hydrocarbons and chloroform have carcinogenic and teratogenic effects. When the water temperature reaches 90°C, the content of halogenated hydrocarbons increases from 53 micrograms per kilogram to 177 micrograms, which is twice the national drinking water hygiene standard.
Drinking water seems simple, but it is actually a science. Drink it correctly, and your body will naturally be healthy; drink it incorrectly, and over time, the damage to your body can be significant. Friends, be sure to pay attention.