About water.

Why is water the source of life? What is the specific gravity of water content in human body? Special properties of water? Is the water you drink safe? Is it beneficial for old people and children to drink pure water for a long time? How many human diseases are related to drinking water? What are the main diseases caused by water pollution? What are the characteristics of diseases caused by water pollution? The secret of longevity in Changshou Village? Quality drinking water standard? Who is prone to water shortage? How to drink water when you are thirsty? Do you want to drink water even if you are not thirsty? Should the elderly drink more water? When is the best time for the elderly to drink water?

1. Why is water the source of life?

Is it a coincidence that the human body is 75% water and the surface of the earth is 75% water? People take food as the sky, and food takes drinking as the first priority. Diet, first "drink" and then "eat". Water is a macro-nutrient, and no nutrient can participate in human functions as widely as water. Every organ of the human body contains extremely rich water, of which blood and kidney account for 83%, heart 80%, muscle 76%, brain 75% and liver 68%. Even bones contain 22% water.

Life is made up of cells and must be "soaked in water" to survive. Drying is the main manifestation of aging. Young people account for 42% of intracellular water, while old people only account for 33%, so wrinkles are produced and subcutaneous tissue gradually shrinks. The process of getting old is the process of losing water. People can go without food for several days, but they can't go without water for a day. If the human body loses 15%-20% of its body weight, its physiological function will stop and it will die.

2. What is the proportion of water content in human body?

As we all know, the human body is close to 70% water. That is, a person weighing 60 kilograms has more than 40 kilograms of water. If it is a baby, it is above 80%, and the proportion of fetal water in the mother is even higher. The water content of the elderly is only 50%-60%.

3. What are the special properties of water?

A: Water has many special properties, which have attracted people's attention in recent years. For example, when water freezes, its volume increases; Water in capillaries or water in organisms, also called interstitial water, cannot freeze at-1 10℃; The molecular formula of water molecule is H2O, and its molecular weight is only 18, but it exists in liquid state at room temperature.

4. Is the water you drink safe?

Answer: 1) Tap water is obtained by water treatment in rivers, rivers and lakes. At present, drinking water is generally supplied by water plants, centralized water supply, and then transported to residents' homes through tap water pipelines. For high-rise buildings, high-rise water tanks are used for secondary pressurized water supply. However, the pollution of industrial development to water sources is becoming more and more serious. Due to the limitation of process, technology and economy, waterworks can do nothing about some pollution.

At present, a certain amount of chlorine preparation (bleaching powder) is used in the disinfection process of tap water, which causes chlorine residue in water and reacts with organic matter in water to generate chloroform. Chloroform is known to be the main carcinogen in tap water. Chloroform in cold water is mostly within the specified range, but the content of chloroform rises sharply after heating tap water, especially from 95℃ to 100℃, and the residue decreases after boiling for more than five minutes. In addition to chemical pollution, pipeline corrosion, insoluble calcium in water, organic matter and water storage tanks in high-rise buildings have also caused serious secondary pollution to tap water.

2) Boiling water is stagnant water.

China people are used to drinking boiled water, which is boiled water. It is said that tap water is unsafe. After all, there is still some dissolved oxygen and minerals. In the process of heating water, dissolved oxygen in water will be lost due to the increase of temperature. What is even more frightening is that the chloroform content in boiled water is 3-4 times that of tap water. No wonder watering the flowers with cold water will kill the fish.

3) Pure water (space water, distilled water) ≠ good water

Drinking pure and hygienic water is our current drinking standard. Scientists remind people that "pure water is not equal to healthy water". Scientists define the new standards of drinking water as: oxygen enrichment, activation function, strong solubility and permeability based on purity.

Although pure water contains no impurities and harmful substances, there have been different opinions on its nutrition and secondary pollution.

4) Mineral water claims to contain minerals and trace elements, but some medical experts have suggested that there is no scientific quantitative study on the extent to which mineralization is beneficial to human body, mineral water is not beneficial to anyone, and many counterfeit products on the market are difficult to distinguish.

5. Is it beneficial for old people and children to drink pure water for a long time?

A: The China Consumers Association issued a consumption reminder saying: Experts pointed out that most people are suitable for drinking weakly alkaline water, especially the elderly, children and infants.

The sampling results of bottled purified water in China in recent two years show that the overall quality of the industry is poor and the product quality is seriously polarized. It is understood that a large amount of purified water in Chinese mainland is made by reverse osmosis technology. This method uses reverse osmosis membrane device to achieve the purpose of purifying water. This method can not only effectively remove pollutants such as bacteria and organic matter, but also effectively remove organic matters such as calcium, magnesium, manganese, zinc and silicon. Therefore, pure water is basically pollution-free and basically contains no nutrients.

6. How many human diseases are related to drinking water?

A: According to the World Health Organization, 80% of human diseases are related to water. The main disinfection method of tap water is chlorination, which can remove a lot of bacteria, but there are also harmful substances, especially heavy metals, chlorine molecules and nitrite in water. At the same time, the transportation process and water tower storage all cause secondary pollution to some extent. Although the water is boiled, harmful substances such as heavy metals cannot be removed. Excessive intake of these substances will do great harm to the human body.

7. What are the main diseases caused by water pollution?

A: Cancer: nitrite compounds, chloroform, radioactive particles.

Liver disease: toxic organic substances and heavy metals contained in industrial wastewater and pesticides.

Stone: groundwater with high hardness.

Cardiovascular: high content of inorganic salts.

Dementia: metal aluminum, etc.

Bone diseases: heavy metal cadmium.

Hematopoietic diseases: heavy metals.

Endocrine disorders: toxic organic matter, high content of inorganic salts, heavy metals, etc.

8. What are the characteristics of diseases caused by water pollution?

A: (1) Progressive: All kinds of toxic substances accumulate slowly in the human body until the onset, which is more concealed because it takes a long time.

(2) Not easy to decompose: most toxic organic substances and all heavy metals cannot be decomposed and metabolized in human body, but can only stay and accumulate in human body for a long time.

(3) Easy to accumulate in the body: Once the heavy metals enter the body, they will combine with human protein to form compounds that are difficult to metabolize.

9. What is the secret of longevity in Changshou Village?

A: Changshou Village is very famous in the Caucasus region in the south of the former Soviet Union. Changshou Village in the Caucasus is the only place in the world where cancer has never occurred, and even the incidence of general diseases in adults is extremely low. There are many elderly people over 0/00 years old in this area, with an average life expectancy of 0/20 years old. They have no pain of disease, sleep at the end of their lives and die peacefully.

Further research by scientists found that the water people in Changshou Village drank was weak alkaline water with small molecular groups. So I came to a conclusion: "Because people in Changshou Village often drink weakly alkaline small molecular water, they will excrete clean feces in their daily lives, and as a result, they are easy to live a long and healthy life."

10, the standard of high-quality drinking water?

A: The World Health Organization (WTO) has analyzed a large number of survey results in longevity areas around the world and put forward six standards for high-quality drinking water:

1) does not contain physical, chemical and biological pollution harmful to human health;

2) contains appropriate amount of minerals (potassium, magnesium, calcium, etc. 100 mg/L), which is beneficial to human health and is in ionic state;

3) Small water cluster and strong solubility and permeability;

4) It should be weakly alkaline (pH 8-9);

5) The water contains dissolved oxygen (about 5mg/L) and carbonate ions;

6) It can quickly and effectively remove acidic metabolites and various harmful substances in the body.

So far, only activated ionized water can fully meet the above standards. Therefore, it is not only suitable for healthy people to drink for a long time, but also suitable for adjuvant treatment of patients with gastrointestinal diseases, diabetes, hypertension, coronary heart disease, nephropathy, obesity, constipation and allergic diseases because of its obvious functions of regulating gastrointestinal function, regulating blood lipid, antioxidation, anti-fatigue and beautifying.

1 1, which human bodies are prone to water shortage?

A: The elderly are less sensitive to thirst, so their bodies are often in a state of dehydration, with less digestive juice secretion, easy constipation and high blood viscosity, which is not good for cardiovascular health.

Babies have vigorous metabolism and fast growth, and the amount of water needed to be supplemented per unit weight is higher than that of adults. Although babies mainly eat liquid food, it is advisable to feed some water between feeding.

Children exercise a lot and need to drink more water. However, children often forget to drink water because they are playful, and only drink water when eating, which affects the digestion and absorption of food.

12. How to drink water when you are thirsty?

A: "Don't drink when you are thirsty" is a proverb. If you drink too much water at a time, which exceeds the capacity of your stomach, your stomach will swell too much, which will cause you an uncomfortable feeling. In addition, a large amount of water suddenly enters the stomach, and gastric juice is diluted at once, which will inevitably affect the digestion and sterilization function of gastric juice. More importantly, after the blood absorbs a lot of water, the blood volume suddenly increases, the concentration decreases, and the burden on the heart increases. When the heart function is not good, there will be uncomfortable feelings such as palpitation, shortness of breath and chest tightness. Poor renal function will aggravate edema. When you are thirsty, drink less saliva first, moisten your throat, stop drinking for a while, or drink some light salt water to supplement the lost salt. It is good for health to take a "small amount" drinking method for many times.

13. Do you want to drink water even if you are not thirsty?

A: If you wait until you are thirsty to drink water, then your body is already short of water. The active principle holds that people should take the initiative to drink water regularly. In addition to three meals, the average adult needs to supplement 1500- 1800 ml of water every day. When you sweat a lot in hot weather, you should drink more water. "Drinking water is not thirsty" is more important for middle-aged and elderly people. If middle-aged and elderly people can insist on drinking proper amount of water every day, it will be beneficial to improve blood circulation and prevent cardiovascular diseases.

14 Should the elderly drink more water?

A: Drink plenty of water in summer, especially for the elderly. Old people have less water than young people 1/3. In addition, when sweating in hot weather, the body is more short of water. Not thirsty doesn't mean not short of water. Even if the elderly don't feel thirsty, they should drink more than 1000 ml of water every day, drink more water several times, even if they are not thirsty, or drink some light tea properly. The daily urine output shall not be less than 1000 ml, so as to ensure that the blood can be diluted, maintain sufficient blood volume, reduce blood viscosity, discharge poisons, and reduce the burden on the heart and kidneys. Especially when sweating too much or having a fever or diarrhea, drink plenty of water to facilitate blood dilution, promote blood circulation in the brain and prevent embolism.

15, the best time for the elderly to drink water?

Answer: After getting up in the morning: Be sure to drink water, because this is the key to starting exercise in a day. When the elderly sleep at night, due to urination, sweating and breathing, the blood in the body is concentrated, the blood flow is slow, and functional metabolites accumulate. Drinking a glass of water after getting up can make the blood circulate normally and prevent diseases such as hypertension, cerebral thrombosis and myocardial infarction. Running after drinking water is more beneficial. Drinking water in the morning is best on an empty stomach. Drink 450 ml of water slowly with a small mouth. Don't sit still after drinking.

At about ten o'clock in the morning: At this time, the biological clock of the human body is the most vigorous in a day, and 300 ml of water should be added. Around 3 pm: It happens to be tea time, drinking 400 ml. Before going to bed: drink 400 ml before going to bed. For the elderly or people with cardiovascular and cerebrovascular diseases, drinking water before going to bed at night can prevent fatal infarction. Many elderly people are not used to drinking water before going to bed and are afraid of getting up at night. In fact, the bladder of the elderly is atrophied and its capacity is reduced, so they have to get up at night without drinking water. Midnight: Drink 200ml. Because of the decline of renal contractile function, the elderly urinate a lot at night, which leads to water shortage in the body, which is easy to make the blood sticky and the blood flow resistance of the heart and brain is high, which is easy to lead to cardiovascular and cerebrovascular diseases. Therefore, drinking water in the middle of the night is very important.

16, special moment for drinking water:

After exercise: Although we are not athletes, we don't exercise so much. No matter what exercise we do, we should drink water, such as cleaning the room, so as not to get tired and ache all over.

In an air-conditioned environment: it is especially necessary to replenish water.

17, drink water in the morning:

1. What to drink?

Fresh boiled water is the best choice. Boiling water is boiled from natural water after multi-layer purification. Microorganisms in water have been killed by high temperature, and calcium and magnesium in boiling water are very beneficial to health. Studies have shown that hard water containing elements such as calcium and magnesium can prevent cardiovascular diseases.

It is wrong to drink light salt water in the morning. People didn't drink a drop of water during the whole night's sleep, but breathing, sweating and urination continued. These physiological activities consume a lot of water. If you get up in the morning and drink some boiled water, you can quickly dilute the blood and correct hypertonic dehydration at night. On the contrary, drinking salt water will aggravate hypertonic dehydration and make people more thirsty. Morning is the first peak of human blood pressure rise, and drinking salt water will raise blood pressure.

It is best not to drink juice, cola, soda, coffee, milk and other drinks in the first glass of water in the morning. Most carbonated drinks such as soda and cola contain citric acid, which will accelerate the excretion of calcium in metabolism and reduce the content of calcium in blood. Long-term drinking will lead to calcium deficiency. Other drinks have diuretic effect. Drinking them in the morning can not only effectively replenish the water that the body lacks, but also increase the body's demand for water, thus causing water shortage in the body.

2. What's the temperature?

Drink water in the morning, it is best to drink the same boiling water as room temperature, and drink warm boiling water when it is cold to minimize the irritation to the gastrointestinal tract. It is found that boiled water cooled to 20-25℃ has specific biological activity, which can easily penetrate cell membrane, promote metabolism and enhance human immune function. People who are used to drinking warm and cold boiled water have higher deoxyenzyme activity in their bodies, good metabolism, less accumulation of lactic acid in muscle tissues and are not easy to feel tired. Be sure to cover the boiled water when it is aired the night before, because the boiled water will lose its activity if it is exposed to the air for too long.

3. How much do you drink?

A healthy person should drink at least 7-8 glasses of water (about 2.5 liters) every day. When the exercise is heavy or the weather is hot, the water consumption will increase accordingly. Getting up in the morning is the key moment for the body to replenish water in the new day. At this time, it is best to drink 300 ml of water.

4. How to drink?

Drinking water in the morning must be on an empty stomach, that is, drinking water before breakfast, otherwise it will not achieve the effect of promoting blood circulation and gastric lavage. It is best to drink water in small sips, because drinking water too fast is very harmful to the body, which may cause blood pressure reduction and brain edema, leading to headache, nausea and vomiting.