There is a popular question on the American version of Zhihu Quora: What do you think is the most "Chinese" thing for Chinese people? There are various answers in the replies, but the one mentioned the most is stillDrinking water, especially hot waterIndeed, the matter of drinking hot water has been engraved into the DNA of Chinese people, and it seems that nothing is unfair. catch a cold? Drinking hot water; sorethroat? Drinking hot water; Even COVID-19 Yang, the expert's advice is to drink more hot waterIt is such an ordinary and beneficial thing, but a small number of people associate it with cancer and proposeBoiling water overnight can cause cancerThe viewpoint of

There is a popular question on the American version of Zhihu Quora: What do you think is the most "Chinese" thing for Chinese people? There are various answers in the replies, but the one mentioned the most is stillDrinking water, especially hot water

Indeed, the matter of drinking hot water has been engraved into the DNA of Chinese people, and it seems that nothing is unfair. catch a cold? Drinking hot water; sorethroat? Drinking hot water; Even COVID-19 Yang, the expert's advice is to drink more hot water

It is such an ordinary and beneficial thing, but a small number of people associate it with cancer and proposeBoiling water overnight can cause cancerThe viewpoint of.

As soon as this statement was made, it scared Chinese people who love drinking water, and everyone asked: How can the same glass of water be consumed during the day and at night, but not during the day? Can water still carry us on its back and secretly spoil at night?

1 Overnight water and boiling water can cause cancer? Research tells you the answer

The reason why there is a saying that overnight water or thousand boiling water can cause cancer is because some people believe that overnight water or thousand boiling waterExcessive nitrite contentAnd nitrite is regarded asHigh risk factors for cancerThe conversation turned pale.

In fact, nitrite itself is not carcinogenic, and if used in moderation, it can also create convenience for our lives. For example, in daily life, it is often regarded asfood additivesUsed for meat productsPreservation, preservation, and color enhancement

However, it should be noted that when nitrite enters the human stomach and intestines, it may be affected by stomach acid and may be mixed with foodSecondary amine, tertiary amine, and amideWait for a reaction to occur and ultimately generateStrong carcinogen N-nitrosamine

The relevant toxicological research results show that the human body ingests once0.2-0.5gNitrite may appearAcute toxic reactionAnd one-time intake3g, there is a risk of endangering life,Causing death

Do overnight water and boiling water really contain enough nitrite to pose a threat to human health? In order to find the answer, staff from the Food Testing Center of the Market Supervision Bureau of Weihai City, Shandong Province conducted an experiment specifically:

They use stainless steel electric kettles to boil tap water separately1, 5, and 10 timesThen pour it into a cup to cool and place the water in place0 hours, 24 hours, and 48 hours,Finally, the nitrite content in different experimental cups was measured separately.

Source: Weihai Market Supervision Bureau

It was found that as the water continued to heat and boil, and the storage time continued to extend, the nitrite content in the water did indeedSlightly increasedTrends.

Among them, placing24 hoursThe nitrite content in the later water will increase compared to before2-4 times andBoil 10 times and let stand for 48 hoursThe highest nitrite content in water can reach0.014 mg/L

However, it can be reassuring that whether it is boiled water or overnight water, the increased nitrite content is not enough to cause cancer, far below the nitrite reference index specified in China's standard drinking water1 milligram/liter

24 hours

2 Drinking water is also important. Hurry up and see if you're drinking right?

Drinking water is the most common thing in daily life, to the extent that many people overlook it. Drinking water is actually a "technical activity", and the wrong way to open it can not only damage the kidneys, but also potentially trigger a series of health problems. Here are the 1 to 3 things to avoid when drinking water. If you don't know, take a look now~

Drink 1 glass of water for 1.3 periods of time

There are three optimal time periods of the day for drinking water, which areMorning rise, before meals, and before bedtimeIt is recommended that everyone develop a habit of drinking a glass of water at these three fixed time periods:

Just wake up in the morning and have a drink on an empty stomach200mlWarm water on both sides, yesReduce blood viscosityAccelerate gastrointestinal peristalsis,Preventing constipation

1 hour before meals,FastingDrinking 1 cup of water is beneficial for producing sufficient digestive fluid,Promote digestion.

1 cup of water before bedtime can prevent an increase in blood viscosity at night, which is beneficial forPrevent blood vessel blockageProtect our cardiovascular and cerebrovascular systems.

2. Do not drink too much water for a short period of time

Drink plenty of water every day, but it is not recommended to drink a large amount of water for a short period of time, as it may causeWater poisoning

Under normal circumstances, there is a set ofPrecision operation mechanismWhen we drink too much water, it will pass throughIncrease the discharge of waterTo maintain fluid balance. For example, it may pass throughIncrease urine output, perspiration, respiratory rate and intensityAccelerate the metabolism and excretion of water through other methods.

If we consume a large amount of water quickly and urgently within a certain period of time,Kidney overload operationThis mechanism may not work properly,The balance between water intake and excretion is disrupted,Water poisoning

3. Don't wait for thirst before drinking water

Waiting for thirst before drinking water indicates that the body has alreadyIn a state of water scarcityAt this point, the kidneys have undergone a long period of high-intensity work,Toxins in the bodyIt has been accumulating continuously, in the urineImpurity concentrationIt will also continue to rise.

And these are all unfavorable factors for kidney health, which will increaseKidney stones, urinary tract infectionsThe risk of disease occurrence. So, it's important to regularly replenish water every day and not wait until you're thirsty to drink water.

4. Avoid drinking too cold or too hot water

Hot water is prone to overheatingDamage to esophageal mucosaIncreasing the risk of developing esophageal cancer. Drinking too cold water should also be avoided, because from the perspective of traditional Chinese medicine, drinking cold water and ice water frequently can easily causeSpleen Stomach Deficiency ColdOver time, it can lead toDeficiency cold constitution

3 Three truly harmful types of water, try to drink as little as possible in daily life

Compared to boiling water and overnight water, the following three types of water pose greater risks to human health: mild to diarrhea and vomiting, and severe to cancer. Therefore, in daily life, we should try to avoid using them.

1. Boiling water

Chinese people have the habit of "eating while it's hot" and "drinking while it's hot", but little do they knowEsophageal mucosaThe damage is very significant.

Esophageal mucosa50-60Esophageal mucosaDamage and decayMechanical damage.

If the mucosa is damaged and not repaired before being burned, it can lead to chronic mucosal damage over time, which may induceEsophageal cancer.

2. Raw water

Raw water has not been disinfected and filtered, and may containChlorine gas, bacteria, insect eggs, residual organic matterWait, not suitable for drinking, otherwise it may causeAcute gastroenteritis,Even contracted infectious diseases.

3. Water stored for more than 7 days

It is best not to drink water that has been left in the water dispenser for more than 7 days, as the water dispenserDifficult to fully disinfectAnd as the water becomes less and lessThe greater the probability of breeding bacteria.

Fruits are the source of life, and everyone must have the awareness and consciousness to replenish water. Of course, it is also important to know what water can be consumed and what water is beneficial for health in order to enjoy the benefits of drinking water.

#Rumor Zero Zero Plan#

reference material:

[1] What can and cannot be eaten overnight? Speak clearly at once! "Health Times, August 22, 2022

[2] Drinking 5000 yuan from a sip of hot water! Persuading people to "eat while it's hot" can harm many people! "Health Times, July 28, 2021

[3] Science Popularization: How to Drink Water and Maintain Health in Summer Heat. People's Daily - Hainan Channel, June 18, 2021

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