People live by absorbing oxygen and spitting out carbon dioxide. Oxygen began to circulate in the body to supplement the functions of internal organs, and under the action of various enzymes, various nutrients needed by the body to maintain life were produced.
Oxygen is used for
health
People don't need air, except under special circumstances.
Oxygen is necessary to rescue patients and has magical life-saving function. Such as dying patients, SARS patients and patients with poor breathing and lack of oxygen.
Oxygen can improve sub-health people to some extent.
But oxygen is a double-edged sword, which has both advantages and disadvantages for human beings.
Our body provides oxygen for various tissues and organs, and people are trying their best to avoid the harm of excessive oxygen to the body-oxidative damage. This kind of injury is closely related to the aging process of people. If the oxygen concentration in the air we breathe is too high, it is toxic to the human body.
Excessive oxygen inhalation will cause dependence on oxygen.