Water is the source of life, and the body's metabolism, blood circulation, breathing, digestion, absorption, secretion, diarrhea, etc. all require the participation of water to function normally. Dehydration in the body can be a health hazard:
◎ If you lack 1% of water, you will feel thirsty and your body temperature regulation will be affected;
◎ Water shortage of 2%, will produce a sense of depression, decreased appetite;
◎ Water deficiency 4%, will feel fatigue, dullness, emotional restlessness, decreased tolerance to stress, and even feel nausea;
◎ Water shortage of more than 10% may be life-threatening!
This shows the importance of drinking water for us. But you know what? There is a kind of water to drink, but it is not good for our health.
1 It is the "carcinogenic water" named by the WHO
Many people like to drink ice water in summer, but in fact, drinking too much ice will not only stimulate the gastrointestinal tract, resulting in abdominal pain, diarrhea and other discomfort, but also easily lead to the accumulation of residual heat in the body, causing heat stroke.
For people with three higher underlying diseases, it may also cause coronary artery spasm, lead to narrowing of blood vessels and cause angina, and even secondary thrombosis causing myocardial infarction.
But it's not that "drinking more hot water" is a good thing. Some people like hot tea, in fact, overheated water (above 65 ° C) is easy to cause burns to the esophageal mucosa and form inflammation.
In the long term, in the process of continuous damage and repair of the esophageal mucosa, scarring, hyperplasia, and even precancerous lesions and even esophageal cancer may occur.
The authoritative "carcinogenic water" announced by the WHO is water with a long-term drinking temperature of more than 65 degrees. This water is a class 2A carcinogen, which has been well documented in animal experiments to cause cancer, and may also cause cancer to humans.
Generally speaking, the temperature of drinking water should be about 25~37 °C.
In addition, can we drink the "thousand boiling water", "overnight water" and "yin and yang water" that we are more familiar with in life?
2,000 boiling water, overnight water, yin and yang water, can't drink?
1,000 boiling water
Repeatedly boiled water is called "thousand boiling water", rumors say that it nitrite exceeds the standard, often drinking is easy to cause cancer. But in fact, the nitrite content in the repeatedly boiled water is not high.
Experiments have proved that the nitrite content in tap water is about 0.007mg/L; After boiling once, nitrite was 0.021mg/L; After boiling 20 times, nitrite is 0.038mg/L.
The standard of nitrite in mainland drinking water is ≤1mg/L, which is theoretically safe to drink.
2 overnight water
In life, many people have been told by their elders: overnight water must not be drunk! Is there a scientific basis for this claim?
Regarding overnight water, the "deterioration" of water has no fixed time, because water will be affected by external temperature and humidity, summer temperature is high, humidity, bacteria multiply faster, it is easier to pollute water, cause human diarrhea.
Therefore, it is best not to drink overnight water in summer, and overnight water in winter is best packed in a container with a lid such as a warm water bottle, but it should not be left for too long.
3. Yin and Yang Water
People call the combination of "hot water + cold water" yin and yang water, and think that drinking it is not good for health. In fact, not necessarily, this mainly depends on what kind of water the cool water is.
If the cool water is raw water, such as well water and river water, it may contain bacteria, viruses, and parasites, of course, it cannot be drunk directly. Even tap water, which has been disinfected, may be contaminated again in the pipeline, and it is not recommended to drink it directly.
And if the cool water is cool and white, and the time is not particularly long, it is just a mixture of water at different temperatures, of course, it can be drunk.
3. Add a little "it" to the water, often drink it well
Drinking water daily, you can also add some "ingredients" to the water, which can help regulate the physical condition, enhance physical fitness, and relieve some uncomfortable symptoms.
1 water + chrysanthemum, goji berry: clear liver and clear eyes
Chrysanthemum can disperse wind and clear heat, calm the liver and clear eyes, clear heat and detoxify; Goji berries can nourish the liver, moisturize the lungs and nourish the kidneys, and also contain nutrients such as vitamin C, vitamin A, and goji berry polysaccharides, which help fight free radicals and improve brain function.
Usually, you can drink with an appropriate amount of goji berries + chrysanthemum soaked water, which helps clear the liver and clear the eyes, and is very suitable for modern people who often look at computers and play with mobile phones.
2 water + hawthorn: adjust fat and eliminate food
Hawthorn is rich in vitamin C, pectin, minerals (such as: potassium, calcium), organic acids, flavonoids (such as quercetin) and other nutrients, of which pectin and flavonoids are beneficial for controlling blood lipids.
You can drink 1~2 pieces of fresh and tender hawthorn fruit or dried hawthorn tea every day, which can assist in food consumption, regulate blood lipids, and also have certain benefits for improving fatty liver.
In 2023
China Women's Daily
Source/I am the Great Doctor Officer Micro Picture/Editor-in-Charge of Photo Network/Su Lin Review/Yifan Producer/Zhifei