4hw.com.cn: with the improvement of people's living standards, more and more people pay attention to health problems. What we often say is to get up early for a glass of water. Drinking water early is not only conducive to replenishing the water lost at night, but also helps to protect the intestinal tract, help the intestinal tract to be healthy and defecate smoothly. Many people are wondering whether they can drink the overnight water. The overnight water and the overnight vegetables contain nitrite Salt causes cancer, which is very harmful to human body. There are endless such statements. Is it true?
In fact, whether the overnight water has little impact on the water quality, and the key factors affecting the water are the containers and the placing environment. Many people think that the overnight water is harmful to the health of the body, which may be considered that the placing time is too long and the bacterial reproduction is too fast. Generally, the growth of bacteria in the containers or air takes time. But a lot of hot boiled water is placed in warm water bottles, which are relatively in a closed space, and there are not many opportunities to contact microorganisms in the air. Moreover, the temperature of hot water is 80 degrees, which is not conducive to the propagation and growth of bacteria. For most people, it is not the same to put hot water in warm water cups, because warm water cups are the workers we often use to drink water in our daily life Yes, we have contact with our mouth, lips, saliva and air, so these conditions are conducive to the growth of bacteria. There may be some microorganisms in the water, but it's a bit exaggerated to say that the overnight water contains carcinogens such as nitrite. Generally, the nitrite in the water comes from nitrate. After the water containing nitrate is boiled, the bacteria in the normal temperature air will change the nitrate into nitrite. Nitrite is toxic, but it does not cause cancer. When it is combined with amines decomposed from proteins, it can become 'nitroso compounds', which are common carcinogens. Nitrosamines increase the risk of gastric cancer and colorectal cancer. However, there is no protein in the water, and there is no condition for carcinogens to form at all. How about carcinogenesis?
On the contrary, many people don't care about eating bacon, dachshund and all kinds of baked products. These foods are the main source of nitrite. If you are worried about the harm to your body, you can supplement green leafy vegetables rich in vitamin C and all kinds of fresh fruits and vegetables, which will help reduce the impact on your body
In short, overnight water has little impact on human body, so you can drink it safely and boldly