1. What water is healthier to drink for a long time?
water
Water is the source of life. Because of the existence of water, we humans can survive on the earth. It can be said that water gave birth to us. When we were born, about 80% of our weight was water, so when we saw the baby, our skin was tender. 60-70% of an adult's body weight is water. After old age, about 55% of body weight is water. It can be said that the process of human aging is actually the process of water loss.
Water is the source of life.
Everyone sees wrinkles on the skin of the elderly, which is obviously a phenomenon of insufficient water. When I was watching a dream of red mansions before, I heard a sentence "Women are made of water". It is true that women's skin looks tender and elastic. Usually, women live longer than men, which may be related to the fact that women have more water than men. If a person drinks water without eating, he can live for about a month. But if he doesn't drink water, his life will be in danger in just seven days. About 10% of body water loss will affect the normal life activities of human body. Losing about 20% will be life-threatening. So what water is good?
tap water
The first one is tap water. In order to prevent the spread of diseases, tap water must be purified and disinfected before it can be used by people. Chlorination, commonly known as bleaching powder, is a common disinfection method in waterworks. This is because the disinfection effect of bleaching powder is good, and of course the low price of chlorine gas is also a feature. However, although chlorine can be used for disinfection, our genes cannot recognize it. To some extent, it is also a carcinogen, especially when tap water is boiled again, it will produce a substance called chloroform, which is a strong carcinogen. Now water safety and food safety are also a factor leading to cancer blowout.
Therefore, drinking tap water must reduce the harm caused by chlorine in tap water and reduce chlorine. Boiled tap water is good water! Two suggestions:
The first one is to connect the tap water to the water tank, then open the lid to let the chlorine slowly evaporate and burn the evaporated tap water.
Second, open the lid after the tap water is boiled, and then burn for a few minutes to volatilize chlorine to reduce the harm of chloroform.
bottled water
The second is bottled water (I will explain it based on pure water today)
Generally, 8 yuan-15 yuan, the relatively cheap purified water is a kind of clean water after multi-pass filtration and RO membrane filtration. Like the bottled water in the office now, it is all this pure water. However, due to the use of RO membrane, the minerals in the water are also filtered out, but the acidic ions in the water cannot be filtered, so this purified water is weakly acidic. You can test pure water with ph test paper.
Ph test paper: The PH value of human blood is between 7.35 and 7.4. It remains the same. The calcium content in the blood is also relatively stable. It accounts for 1% of total calcium in human body. Don't underestimate this 1% calcium. It has a great effect. When you drink weakly acidic water for a long time, in order to maintain the normal ph value of blood, calcium in blood will neutralize these acidic substances, and blood calcium is stable. What should I do if there is not enough calcium in my blood? The human body will automatically produce osteoclasts, which will release calcium from the bones into the blood to supplement the deficiency of blood calcium and maintain the balance of blood calcium. If you persist in old age for a long time, it is easy to have chronic bone diseases such as osteoporosis.
mineral water
The third is mineral water: mineral water contains minerals and trace elements needed by the human body and is a good water source. Such as Wahaha mineral water, ice dew mineral water, Master Kong, Nongfu Spring and other brands of mineral water. Dropping the same amount of ph test solution into each mineral water, it was found that only Nongfu Spring was alkaline, and other brands of mineral water were acidic. So Nongfu Spring is a good water source. However, according to the drinking water requirements of the dietary pagoda, the daily drinking water per capita is 1500- 1700ml. Even if it is calculated according to a bottle of 500ml, it is not cost-effective to drink three bottles a day.
Water per day 1500- 1700ml.
Therefore, the above three best, most economical and most affordable water are undoubtedly boiled tap water, with the highest cost performance! But the premise must be volatile chlorine and chloroform. The suggestion has been told to you. Don't forget!
well water
In fact, there is another kind of water that is undoubtedly the best, but it is difficult to drink now, that is, the kind of "well water" in the countryside before. Drinking this natural "well water" now feels extravagant! Anyway, my family has no countryside. After urbanization, it is all tap water. . . And the water filtered by many water purifiers on the market now. The water purifier is actually produced in line with the times. Merchants feel that water pollution is serious, and then produce so many water purifiers. Of course, this kind of water can be used, but for ordinary families, the price of water purifier is on the high side. I still recommend drinking boiled tap water, which is the most economical and relatively healthy.
2. What kind of water can't be drunk?
1, unpolluted water-bladder cancer, rectal cancer
Experts point out that drinking raw water increases the possibility of bladder cancer and rectal cancer by 2 1%-38%. When the water temperature reaches 100℃, these two harmful substances will be greatly reduced with the evaporation of steam. If boiling lasts for 3 minutes, it is safe to drink.
2, thousands of boiling water-diarrhea, abdominal distension, coma and convulsions
Thousands of boiling water is water that has been boiled on the stove for a night or a long time, and it is water that has been boiled repeatedly in an electric water heater. Because this kind of water takes a long time to boil, the content of heavy metals such as calcium and magnesium and nonvolatile substances such as nitrite in the water is high. Drinking this water for a long time will interfere with people's gastrointestinal function and cause temporary diarrhea and bloating; Toxic nitrite can also cause hypoxia in the body, which can lead to coma, convulsion and even death in severe cases.
3. Re-boiled water-poisoning
Some people are used to boiling the warm water left in the thermos before drinking, which can save water, coal (gas) and time. But this "saving" is not enough. Because water burns and evaporates, nitrite will rise. If you drink this water regularly, nitrite will accumulate in the body and cause poisoning.
4, boiler water-premature aging, cancer.
Boiler water is leftover boiler water such as steamed bread, and the concentration of nitrite in the repeatedly used boiler water is very high. Drinking this water often, or cooking porridge with this water, will cause nitrite poisoning; Scale often enters the human body with water, and it can also cause digestive, neurological, urinary and hematopoietic diseases, and even cause premature aging and cancer.
5, water for the elderly-esophageal cancer, gastric cancer
Commonly known as "stagnant water", that is, water that cannot be stored for a long time. Drinking this kind of water often will obviously slow down cell metabolism and affect physical development for minors; Middle-aged and elderly people will accelerate the recession; The incidence of esophageal cancer and gastric cancer is increasing in many old places, which may be related to long-term drinking of aged water. Toxic substances in aging water also increase with the increase of water storage time.
Because people can't live without water, we drink water almost every day, so water is very important to us, so we should pay special attention to the health and safety of water. In fact, bottled mineral water is the safest, but its price is relatively high and too extravagant, so the next best thing is to boil water with tap water, but it is best to open the lid for a while and let the chlorine evaporate before drinking.