Therefore, at the time of the creation of human beings, many rules and restrictions were established for human beings, such as the arrangement of human bodies, human cells and useful life, human continuity and reproduction, the upper limit of human knowledge, and so on.
Humans are designed to be carbon-based organisms that need to breathe oxygen to survive, but because of oxidation, human cells don't last more than 100 years, and then they die completely; But there's another kind of cell that keeps us from dying out when all the other cells die, and that's our reproductive cells, like sperm and eggs, and the combination of the two is able to produce full-life cells throughout the body. In theory, a human cell can only reproduce a cell at a certain point in time, and this cell can't reproduce for an hour, or even a second, if it can, then the cell will not die, will always be young, and this restriction stipulates that after the cell reaches its useful life, it will completely die, and therefore human beings will die; But the sperm cell and the egg cell will not, and when the two combine, they will create a new life cell, and this cell, as if reset the time, needs to be reoxidized to die.
Why is it that most human cells don't last more than 100 years? Because it is completely killed by the rules of design - the poison of the cell, and this deadly poison is our essential oxygen. Because the essence of aging is actually a process of oxidation, and the process of oxidation must have the participation of oxygen. In this way, the cells in our body will accelerate aging due to oxidation, and at this time the cells must divide, so as to give birth to new cells to replace the aging cells, but unfortunately, the number of times the cells in the human body can divide is limited, which is known as the Heflick limit in biology. When this limit is reached, because no new cells are produced, the human body will eventually die as the cells age and die. And most diseases are essentially an oxidative process. Therefore, whether aging or disease, there is a close relationship with the participation of oxygen.