What are the hazards of oxygen to the human body

We know that in our daily lives we cannot live without air and oxygen. Once we leave oxygen, we cannot breathe. A certain concentration of oxygen will bring us easy breathing and a comfortable feeling, but once the oxygen concentration exceeds the range that the human body can bear, it will endanger our health. So what are the hazards of oxygen to the human body? The following are introduced one by one:

When the oxygen concentration exceeds 70%, high-purity oxygen will be harmful to the human body, which is the so-called "oxygen" poisoning. Inhaling 80% or higher purity oxygen at standard atmospheric pressure for several hours may cause nasal discomfort.

Inhaled oxygen at a higher pressure will be absorbed in a shorter time.

Inhalation of pressurized pure oxygen may damage lung function and the central nervous system, thus

Causes dizziness, tingling, impaired vision and hearing, muscle twitching, loss of consciousness, and seizures

It will also reduce the visual range and prolong the time it takes for vision to adapt to darkness.

Excessive oxygen intake can also promote aging. Oxygen entering the human body reacts with oxidase in cells to generate hydrogen peroxide, which then turns into lipofuscin. This lipofuscin is a harmful substance that accelerates cell aging. It accumulates in the myocardium, causing myocardial cell aging and heart function decline; it accumulates on the blood vessel wall, causing blood vessel aging and hardening; it accumulates in the liver, weakening liver function; it accumulates in the brain, causing intellectual decline, memory decline, and people become demented; it accumulates on the skin, forming age spots.

The above is an introduction to the harm of oxygen to the human body. Although we cannot survive independently without air and oxygen, we cannot just absorb pure oxygen. In short, the concentration of oxygen we absorb must be within the range that our human body can withstand. Too little or too much oxygen will cause certain harm to our body.