Why can t you drink water overnight Is there any harm?

Overnight water can be a problem for bacteria to grow.

But ice in the refrigerator overnight water can reduce bacterial growth.

Because overnight water is easy to breed a large number of bacteria, it is not beneficial to human health, but some people know that they still often drink overnight water, which is really bad.

Although tap water has been disinfected and filtered, there are still certain bacteria, boiling water overnight, 37 o'clock is the most likely for bacteria to grow and multiply, and the nitrite content in the water will rise overnight, drinking this water is easy to cause disease, so a pot of water for three days is a bad habit.

Many people have a cool bottle of water at home, and the cool boiled water in it can be drunk at any time. However, this convenience can pose health risks. If you don't finish it that day, be sure to pour it out.

This is because nitrogen-containing organic matter in boiled water will be continuously decomposed into nitrite, and at the same time, it is inevitable that the intervention of microorganisms will accelerate the decomposition of nitrogen-containing organic matter. The harm of nitrite to the body is well known, it has a strong ability to bind to hemoglobin in the body, which can hinder the normal oxygen transport function of the blood. Therefore, it is best to drink boiled water on the same day.

In addition, many families are now accustomed to drinking bottled water, and seemingly well-sealed bottled water should be drunk within three or four days. Because, after the bottled water is opened for a long time, bacteria will slip into the water inlet, and the water dispenser will form a negative pressure when the water is discharged, and it will inevitably inhale part of the air, and the bacteria and microorganisms in the air will also take advantage of the void to enter. If you don't drink it in a short period of time, the bacteria will exceed the standard and the purified water will no longer be pure.

Dangers of drinking water overnight.

Overnight boiled water is drinkable. Some people think that boiled water cannot be drunk overnight for two reasons: first, a large number of bacteria are present in it.

2. Overnight boiled water is carcinogenic. Actually, it's all wrong. Overnight boiled water contains a certain amount of bacteria, but not a lot, and drinking cold boiled water has many benefits for the body, and there is no guarantee that there are no bacteria in the water, just a matter of how much.

If you leave plain water for more than two days, don't drink it, but overnight, that is, 8-12 hours, is no problem. There is also boiled water after repeated decoction before it can cause cancer, but it must be decocted more than 35 times, which is not possible for ordinary families. Therefore, overnight boiled water is not harmful to the body, and it can be boiled again if necessary, and it can be drunk after boiling.

The reason why you can't drink water overnight is because it can harbor a lot of bacteria. Overnight boiled water contains a certain amount of bacteria, but not a lot, and drinking cold boiled water has many benefits for the body, there is no guarantee that there are absolutely no bacteria in the water, if the boiled water is put for more than two days, do not drink it, but there is no problem for about eight to twelve hours overnight. Try to drink boiled water on the same day, and it is not recommended to drink boiled water overnight.

Many people have certain doubts about whether overnight water can be drunk, but in fact, overnight water does not cause cancer, and it is okay to drink! Let's talk about it in detail.

Overnight water refers to boiling water that has been left on hold overnight, so can you drink overnight water? Is it really harmful?

Can you drink water overnight?

Some people say that overnight water is poisonous and even carcinogenic. The reason for this is still the problem of "nitrites", nitrosamines are indeed a new type of drinking water disinfection by-product, but the amount of nitrosamines we ingest from drinking water is actually "minimal".

Because the production of nitrosamine substances requires a suitable environment and precursor substances, but the bacterial substances in the water will lose their activity after boiling, and the nitrate content is small, and there is no basis for the production of a large number of nitrosamine substances.

Therefore, even if the boiling water is left overnight, it will not change the properties of the water itself, and the microbial content may increase, but it will not cause great harm to the human body.

There is an argument that overnight water produces nitrite, which is a strong carcinogen, so overnight water becomes carcinogenic water, which in the eyes of some people is comparable to poison. However, studies have shown that drinking water does contain small amounts of nitrate and nitrite, but the levels are very low and do not pose a threat to the human body. Nitrate and nitrite are mainly used in formations, domestic sewage and industrial wastewater, but after the treatment of drinking water, its content has been very low, although the night is dark and mysterious, but it does not make the nitrate and nitrite in the water increase out of thin air.

Therefore, this claim is completely unfounded.

Drinking overnight water is not good for health, although tap water has been disinfected and filtered, but there are still certain bacteria, boiling water overnight, 37 o'clock is the most likely for bacteria to grow and multiply, and the nitrite content in the water will rise overnight, drinking this water is easy to cause disease, so drinking a pot of water for three days is a bad habit.

The most scientific method is that when the water is boiled, the lid of the large kettle is opened, and the harmful substances in the water are evaporated through the water vapor, so that it can be boiled for another 2-3 minutes, but not too long, more than 5 minutes is not good.

Who said that the overnight water can't be drunk, there is no scientific basis, the boiling water boiled in the morning, put it in the afternoon to drink, and the overnight water can't be drunk, the water is left overnight, does it know itself? The key is to look at the container, the container is not up to standard, and the long time will decompose and the heavy metals exceed the standard.

Don't drink water overnight, there is no scientific basis, boiled water in the morning, drink it in the afternoon, don't drink water overnight, keep the water overnight, the key is to look at the container. If the container does not meet the standard for a long time, decompose heavy metals, standard.

Overnight water can be drunk, no freshly boiled water has sufficient nutrients, no more than 12 hours can be drunk, it is best to release chlorine from the water pipes just connected, and then boil water to drink.

Your question is wrong, overnight water can be drunk, it is harmless to the human body, and it is a rumor to say that overnight water cannot be drunk!

There is no harm, and the water left overnight is drinkable.

I think you can drink water overnight, don't leave it for too long, try to make it hot and drink.

1. The reason why the overnight water can not be drunk is because the boiled water is placed for too long, which will easily breed bacteria, if the temperature is too high, it will be easy to deteriorate, and it will easily cause diarrhea after drinking, especially for children or the elderly with weak stomach, it is best to drink fresh boiled water.

2. Don't drink overnight water in summer if you can't drink it. It is best not to leave boiled water for too long, and it is not advisable to drink boiled water after several days.

3. If there is no other substance as the basis of the reaction in the overnight water, carcinogens will not be formed for no reason. As long as the water quality can be ensured to be normal** and the safety standards can be met, theoretically, no matter how much the water is burned, carcinogens will not be formed.

There are two main reasons why water cannot be drunk overnight.

First, overnight water can be contaminated with airborne bacteria and microorganisms. Because the water contains nutrients and the temperature is suitable for microorganisms to multiply, it is easy to breed various bacteria, microorganisms and other potentially harmful substances during storage. If you drink the water overnight again, it may cause health problems such as gastrointestinal upset.

Second, water may lose its freshness after being stored for a long time, taste bad, and may even form an off-flavor. This is because when water comes into contact with air, it absorbs gases such as oxygen and carbon dioxide in it, resulting in qualitative change. In addition, there are some special conditions, such as if the shirt is placed in a plastic container for a long time, it may release environmental hormone compounds, which may have adverse effects on the human body after consumption.

Therefore, it is advisable to drink as fresh and clean water as possible every day and avoid overnight and reuse. Consumers can properly prepare several clean water cups or kettles to ensure that the water is fresh every time it is used.

Why can't you drink water overnight, as long as it is not polluted, drink it correctly.

In general, overnight water can be drunk, but it depends on the situation. If the overnight water is kept in a clean container, it is not contaminated, there is no odor and discoloration, then it can be continued to drink. However, if the overnight water is kept in an unclean container or is contaminated, then it is not recommended to drink it.

In addition, the number of microorganisms and bacteria in the overnight water will gradually increase, and if it is stored for a long time, it may cause problems such as poor water quality, odor and discoloration, and even diarrhea. Therefore, it is advisable not to keep water for a long time, and it is better to drink fresh water every day.

In short, overnight water can be drunk, but pay attention to the preservation environment and storage time to ensure water quality safety and health.

Why can't you drink water overnightDo you think you can drink water overnight? I don't know if I can do it quickly? Some people may feel strange, feel that they should not have thought much about this problem, some people want to know why the overnight water can not be drunk, because they are not very familiar, they dare not drink overnight water, after all, Chang Chang does not know much, and I don't know why I can't drink it, it is more troublesome, so I usually don't drink much Yanxun, so why can't I drink overnight water?

Why can't you drink water overnight1.Overnight water can harbor bacteria.

Generally, overnight boiled water will cause bacteria to grow if it settles overnight. If the water is boiled to 100 degrees Celsius, it will kill many bacteria and viruses. However, as the water level decreases, it will favor the growth of bacteria and viruses.

If the weather is hot and humid in summer, and the ambient temperature is high, it will be more conducive to the growth of bacteria. It's time to pay more attention.

2.Generally boiled water settles overnight. Generally, there are not too many bacteria, but if you leave the water overnight for a long time, there will be more bacteria.

Moreover, drinking water overnight often will cause abdominal pain, diarrhea and diarrhea. Water cannot be drunk overnight. To prevent causing abdominal discomfort.

You can usually store the water in a thermos cup, so that it will not cause abdominal discomfort. It can be of some help.

There is a theory that overnight water will increase the nitrite content in the water, and the nitrite in it, which is a carcinogen, may cause cancer if consumed for a long time.

However, the generation of nitrosamines is not so easy, it needs to have certain precursor substances and environmental conditions, the most easy to produce nitrosamines is the gastric juice of humans and animals, and most of the gastric juice acidity is not enough, in order to generate nitrosamines, this phenomenon is also called endogenous nitrosation.

Because in people's minds, overnight water is similar to water that has been left in the air for a long time, and the water will increase the reproduction of many bacteria, which is not conducive to human health after drinking.