The ancients said, "Water is the source of all things." Li Shizhen listed "Water" as the first chapter of " Compendium of Materia Medica", citing examples of the health and healing effects of water; the United States lists water as the top nutrient, which has its own truth; "Water is the source of life", it is enough to see its importance, but in this hot period of other functional nutrients, the nutritional value of water has been marginalized. Today, let's talk about the forgotten nutrient-water.
1. Why can water, such a simple substance, be among the seven nutrients?
The nutritional value of water lies in its irreplaceability for maintaining the life of the body. Water has four main functions to the human body: it constitutes the body's body fluids, promotes metabolism, regulates body temperature and acts as lubrication. In the human body, water mainly plays the role of "transportation captain". Through it, the nutrients ingested by the human body are sent to the internal organs and the cells of the whole body. At the same time, it can also transport the waste and toxins discharged from the human endocrine system to the corresponding organs. Make it excreted from the body [1].
China Nutrition Association announced the new diet pagoda, water, as one of the seven nutrients, occupies an important position in the nutritional diet pagoda, and emphasizes the importance of scientific drinking water and adequate drinking water , Emphasize the relationship between drinking water and health.
2. How to drink water scientifically? How much is enough to drink but not too much?
The human body’s water requirements vary from person to person and to the environment.The 2016 edition of the Dietary Guidelines for Chinese Residents recommends that you drink plenty of water, 7 to 8 cups (1500 to 1700 mL) per day for adults, and it is recommended to drink boiled water and tea, and no or less sugary drinks.
Cultivation of scientific methods of drinking water can start from the following points: Negative Effects.
②Drink before you are thirsty. If you feel thirsty, it means that the body is dehydrated.
③Do not drink too fast or too quickly, which may cause hiccups or abdominal gas, especially after strenuous exercise.
④The most ideal drinking water is cold boiled water and light salt water.
When boiled water is naturally dried at 20~25℃, its physical and chemical properties such as tension and density are very similar to the chemical characteristics of water in biological cells, and it is easily absorbed by the body.
After a lot of sweating, it is beneficial to supplement with light salt water, generally 500mL with 1g salt is appropriate.
⑤Do not drink these kinds of water
Contaminated raw water: untreated,Contains various bacteria, viruses, etc., and even contains pollutants harmful to the human body;
Aging water: Water that is stored immobile for a long time, the harmful substances in it will change with the extension of storage time Increase;
Thousand rolls of water: The content of non-volatile substances such as calcium, magnesium, and nitrite will increase, and long-term drinking will interfere with the body's gastrointestinal function; Repeated use of steamer water: may accumulate nitrite , long-term drinking may cause nitrite poisoning ;
_strong4 _strong4 _strong25 strong2 The drinking tap water contains halogenated hydrocarbon, chloroform and other carcinogenic and teratogenic substances. When the water temperature reaches 100℃, these two harmful substances will be greatly reduced as the steam evaporates.
3. To be healthy, drink healthy water.
In real life, life is inseparable from water. Water accounts for about 70% of a person's body weight. This picture allows you to understand how important water is to the life composition of the human body.
World Health Organization information: "80% of the world’s diseases are caused by drinking 50% of the world’s unclean water. Caused by contaminated water. The world’s 1.2 billion people suffer from various diseases from drinking contaminated water.”
It can be seen that drinking good water is one of the basic conditions for healthy and longevity.
longevity village One of the reasons for the longevity of people in the world is the good water quality and high activity there. So what standards should good water quality meet? According to scientific investigation and analysis, we have obtained 7 standard criteria for healthy water, as shown in the following table [2]:
What is evil, so it is more than Tao. Although water is unknown, it is extremely important! In daily life, we should pay attention to cultivating the habit of drinking healthy water scientifically.
References
[1] Liu Xufeng. Chemistry in Life [M]. China Textile Publishing House 4span _span _span 9 span. Science and Health of China[M]. Fudan University Press, 2012.
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