What is the importance of water to human body?

Without water, nutrients in food can't be absorbed, waste can't be excreted, and even drugs can't play a role in the body. Water is not only the carrier of human metabolism, but also has the functions of maintaining normal osmotic pressure and electrolyte balance of body fluids, regulating body temperature and lubricating.

Water in the human body accounts for about 70% of the body weight, of which brain water content is 75%, blood water content is 83%, muscle water content is 76%, and even the hardest bones contain 22% water.

Water has many important functions in human body.

(1) water is an important part of cell protoplasm;

(2) Water acts as a solvent in the body to dissolve various electrolytes;

(3) Water plays a transport role in the body, which can transfer nutrients, metabolic wastes and endocrine substances (such as hormones);

(4) Water has high thermal conductivity and specific heat, and can be used as a "heat carrier" to transfer heat between the body and the skin surface, which helps to regulate body temperature. ?

Refer to the above content: Baidu Encyclopedia-Water