Lifespan depends on the health of your cells
What is important is cell division. We need to know whether the number of cell divisions is really limited, or whether infinite division is possible if the conditions are right, and what causes cell damage. If the number of divisions is set, we need to know what causes it. If the number of divisions is set, lifespan can be extended by preventing cell damage, but even if cells recover, lifespan cannot be extended because the number of divisions has been exceeded.
Fortunately, the number of cell divisions is not set. They can divide continuously, and even damaged cells can recover if sufficient energy is supplied. If the number of divisions is fixed, then the lifespan will also be fixed. However, the time each person spends in the world is different. You create your own lifespan. However, there are people who live long, disease-free lives, and there are people who die young, and there are those who have youthful eyesight and those who have presbyopia. Of course, the genetic aspect cannot be ignored.
Why are cells damaged? What should we do to make our cells healthy? Scientists say that how quickly cells degenerate and how long a person can live depends on the speed at which problems occur within cells and whether the body has the ability to efficiently repair damaged cells.
That is correct. However, the priority is to prevent cells from being damaged, and the second priority is to have a system for rapid recovery. It is natural that cells with less damage remain healthy for a long time.
# cell division : 세포분열
# youthful eyesight : 동안
# presbyopia : 노안
# lifespan : 수명
# prevent A from ~ing : A가 ~하는 것을 방해(예방)하다