With the continuous occurrence of various diseases, more and more people gradually attach importance to daily maintenance. The basis of maintenance is to ensure the physical and mental health of diet and lifestyle. As a basic nutrient element, the safety factor of water is also concerned by many people, especially overnight water. Some people think drinking is safe, while others think it is not. Is the rumor true because there are carcinogenic chemicals in it? I'll explain it to you this time.
Overnight water can cause cancer, is it scientific?
Why does this view appear? Many people are worried that water will cause sodium nitrite overnight. These organic substances will dissolve into nitrite after contact with gastric juice, which is one of the carcinogenic chemicals recognized by WHO. Long-term and overnight water will increase the risk of malignant tumor.
In fact, there is not enough research data to confirm the statement that water causes cancer overnight. This is because the content of sodium nitrite in warm water that people usually drink is very low. Even if germs and bacteria in the air enter the water through overnight deposition, the content of carcinogenic chemicals will be very low and will not reach the risk of cancer. At the same time, the human body has its own "immune mechanism", and those harmful substances will be eliminated by cellular immunity after entering the human body. We don't have to worry too much.
From this, I think that the statement that overnight water causes cancer is not established, and there is no corresponding scientific proof, so we don't have to worry about it, but this conclusion does not mean that overnight water can be safely drunk. If the storage time does not exceed 12 hours, it can be directly drunk after heating. If it is more than 24 hours, it is not recommended for everyone to drink it, because there are probably more germs in it and minerals in the water.
How to drink water correctly and healthily? The doctor taught you to pay attention to drinking water.
Don't drink too hot water at first. It is a good habit to insist on drinking boiled water, but boiling water that is too hot is harmful to your health, especially boiling water over 65 degrees. This is because overheated water is very easy to burn esophagus, mouth and gastric mucosa, which increases the probability of inflammation. Inflammation is the main manifestation before cancer occurs, so water over 65 degrees has a certain risk of cancer. Usually pay more attention to whether it is tea or simply suitable.
Second, don't drink "cold water", that is, water that has not been disinfected at high temperature, especially drinking water. Although this kind of water has been disinfected in the case of waterworks, it may be contaminated with some germs or sparganium when it spreads to every household. If you can drink directly without all the solutions, it may increase the total number of bacteria in the body and increase the damage of the intestine.
The suitable temperature of drinking water is 18-30℃. If you prefer to drink boiled water, it is suggested that it does not need to exceed 50℃, that is, it feels hot to the touch, but the level of meridians is the best, which can not only play the role of promoting fluid production and quenching thirst, but also will not burn the mucosa in the body. More importantly, it can also supplement trace elements.