The statement about "water only has a shelf life of 16 hours" has spread wildly online. When one of my friends, Xiao Chen, saw this information, he almost vomited out the water he had just drunk because he was a lazy cancer patient. He didn't change the bottled water at home once a week, let alone 16 hours, he drank a lot of water for more than 24 hours.
There are quite a lot of "lazy people" like Xiao Chen in society, but can a cup of "expired water" really make people cancer?
water will "expirate"? Will it cause cancer?
The water in the bottle will "expirate", but it is not really expiring. In fact, sometimes the expired bottle water is cleaner than some river water. However, the reason why the water in the bottle is easily contaminated is that it is almost a closed system in the bottle. After the bottle cap is covered, the water in the bottle will not evaporate and the water from the outside will not enter.
Because the amount of water in the bottle is very small, a little microorganisms will cause contamination of the water in the bottle. Also, if the bottle cap is not closed for a long time, the microorganisms in the air will also enter the bottle, contaminating the water resources in the bottle.
From the perspective of drinking water hygiene, it is best not to drink water that has been left for too long, because it is unhygienic and may contaminate harmful microorganisms such as bacteria. Of course, if it is sealed water, it will be fine. For example, before the bottled mineral water is opened, it will be fine not only for 16 hours, but also for several days and months.
Of course, it still has a shelf life, not indefinitely. Moreover, if the bottle cap has been opened and drunk, it is recommended to drink it as soon as possible, otherwise it may be contaminated and breed microorganisms and bacteria, etc., but you don’t have to worry about carcinogenic problems!
thousand boiling water . Does overnight water cause cancer?
In daily life, we often hear such remarks: "Thousand boiling water and overnight water are prone to cancer and must not drink it." Repeated boiling water is called "Thousand boiling water". It is rumored that Thousand boiling water contains carcinogenic substance nitrite .
In fact, these statements are unscientific. Although some of the nitrate in the water will be converted into nitrite under high temperature and hypoxia conditions, experiments have proved that the nitrite content in tap water is very low, only 0.007mg/L, even if the nitrite only rises to 0.021mg/L after boiling water.
According to national standards, the nitrite content in drinking water in daily life is ≤1 mg/L, which means that the water will be boiled 200 times before it will exceed this limit, so we don’t need to worry about the saying that thousands of boiling water causes cancer.
overnight water is also not cancerous. The same way, as long as the water source is safe, you can drink it. Think about it, you can drink the water you burn in the morning at night, but why can’t you drink the water you burn in the evening? Both of them have passed eight hours, and there is no difference between the water in the two time periods.
Just heat it before drinking it to avoid irritating the intestines, so you can drink overnight water and Qianbo water with confidence.
2 type of water is often drunk, or when feeding cancer cells
When it comes to drinking water, people always feel that cold water can easily stimulate the stomach and intestines, and hot water is conducive to speeding up metabolism, so they always drink hot water habitually in life.
However, it is unknown that if the temperature of water exceeds 65℃, it is easy to increase the risk of esophageal cancer, because the esophagus is relatively fragile and can only withstand high temperatures of up to 60℃. But if you drink water above 65℃ frequently, it will continue to damage the esophagus and in mild cases, inflammation will occur.
will also cause abnormal proliferation during repeated damage repairs. This is also the main reason why International Cancer Research Institute lists hot drinks at 65℃ as a Class 2 carcinogen.
2, "Wine"
As early as 2018, a study in the journal Asian Surgery pointed out that alcohol has been identified as a risk factor for squamous esophageal cancer. The average weekly alcohol intake exceeds 170 grams, and the risk of squamous esophageal cancer is significantly increased.
Generally speaking, after people consume alcohol, the alcohol in the body will be oxidized into acetaldehyde , and acetaldehyde is a carcinogen, which is very harmful to the human body.
Most wines are irritating. If it is some high-concentration white wine, it is more irritating, which will cause stronger stimulation to the esophageal wall. In the long run, it will cause esophageal cancer and double the harm.
Healthy drinking water, avoid the following 2 bad habits
Hydrink water never washes
Bottled water and water dispenser are very common in homes, offices and public places. Have you ever thought that the water dispenser used has never "taken a bath" since it was placed there.
water dispenser seems to make people drink good quality water, but in fact, "secondary pollution" is very serious. Whenever the water dispenser faucet is turned on, a string of bubbles will come out of the bucket. This means that air enters, and dust and microorganisms will be brought in.
--Don't drink water without thirst
This situation is very common in our daily life. Some people are busy with work and forget to drink water for a while. Unless they wait until they are very thirsty, they will think of drinking water, which often delays water from participating in metabolic activities in the body, which can easily cause blood viscosity and induce diseases.
So no matter whether you are thirsty or not, you should remember to replenish your water in time. The amount of 8 cups of water per day must not be reduced.
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