Water is the source of life, which is indeed the most pertinent evaluation. Since the first day of life in water, the role of water in life has not changed. Water is the most abundant substance on the earth and in our bodies. An 8 kg baby has nearly 6 kg of water, and an adult is 75% water. Water exists only in human body. Because all metabolic reactions occur in water medium, water is also an essential substance in life. For the human body, participate in life sports, eliminate harmful toxins in the body, help metabolism, maintain aerobic breathing and so on. Its function and function are unique.

We may know a lot about all kinds of water in nature (rain, sea water, river water, etc.) ), but we know little or nothing about the water in the body. If we understand the role and function of water in human body, we will suddenly realize that many inherent concepts will be completely changed.

The various physical and chemical properties of water make it undertake various key body functions. The role of water in maintaining life includes:

Help digestion: the food we eat in our mouth, after being chewed by our teeth and moistened by saliva, goes through the process of complete digestion and absorption from esophagus to stomach, and all these links need the participation of water. The nutrients we need can only be absorbed if they are completely dissolved in water.

1. transport nutrition: water transports fully dissolved nutrients to cells, and water also transports various bioactive substances, such as hormones, enzymes, platelets and blood cells. Water makes the chemical function of cells go smoothly after metabolism.

2. Waste discharge: Water is a very good solvent and suspension medium. Many substances are dissolved and suspended in water, and can form new substances through various reactions. This property of water can make the wastes and toxins produced in the process of metabolism in the body excrete in various ways, and all these ways require the participation of water.

3. Joint lubrication: Water is the main source of human joint lubrication fluid. As a solvent, water, together with various viscous components, forms a lubricating liquid for lubricating joints, a viscous liquid for lubricating the digestive tract and urinary system, a slurry for lubricating internal organs, and digestive tract secretions such as saliva that play a lubricating role in food digestion.

4. Balance body temperature: After water absorbs heat, the temperature change is relatively small. Because of this thermal solubility, water absorbs heat, produces and evaporates sweat to release heat to help the body regulate body temperature and keep it normal.

5. Maintain cells: Water is an important part of human body structure. It promotes the metabolism of cells and participates in maintaining the normal morphology of cells and the composition of intact cell membranes. It also maintains the whole organ through its buffering effect. The maintenance of body structure also needs its help. Keeping the skin smooth and elastic, the hydration state of cells and the regulation of the body play a key role in maintaining the normal function of cells.

To sum up, it is not difficult to see that water is the most basic substance for human life-sustaining activities and is closely related to our health. However, due to the relative availability of water and people's ignorance of water, their importance is often ignored. As the famous environmental researcher, nutritionist and water expert Martin Fox pointed out: The quality of drinking water (whether bottled water or tap water, etc. ) is vital to our health. However, it may also be the most easily overlooked of all our health plans.

It is necessary to emphasize again that according to the survey of the World Health Organization, 80% of diseases and 52% of children's deaths are related to the poor quality of drinking water caused by water pollution, which is devouring human health and life. Jiang Bensheng, a famous Japanese scholar, thinks according to his profound research on water for many years: "People live in a state of water almost all their lives. From a material point of view, man is water. No matter what race you are, this premise will not change. In short, it can be achieved as long as the water that accounts for 75% of the human body is clean.