What is the limit of the life span of human ? The results of these two scientific calculations are disappointing. Everyone knows that birth, old age, sickness and death are the laws of nature. Although human beings can extend their life to a certain extent with the development of science and technology, this is not infinite. There is a life limit, so what is this limit? In the history of mankind, biologists have conducted relevant studies and investigations on this lifespan limit.
First of all, we need to know why there is death? And what determines the lifespan of our human beings is actually genes. There is a protein complex called "telomere" on the ends of chromosomes in all animals. This kind of substance plays a great role in the spread of chromosomes, but every When the cells in our body divide, each time they divide, the telomeres become shorter.
The most terminal particles disappear completely, the cell will stop dividing, and the cell cannot divide, which often leads to aging and death, so from the biological calculation method, we can study cell division and telomere wear Circumstances to predict the life limit.
So as early as 1961, the famous biologist Hayflick found through a lot of research that in an extremely ideal environment, telomeres can provide cell divisions about 50 times, and the highest limit is about 60 times. , And for our human body, within 2.4 years, the cell will complete a division, so we can know that the human life span is about 144 years. When the cell is not dividing, nothing stops.
This is what we call the first scientific calculation method. According to this calculation method, the limit of human life span is about 144 years, and humans cannot make breakthroughs.
And the second method is based on the principle of statistics. The essence of these two methods is to collect data on mammals, including us humans, and some life cycles. After the statistics are completed, A very careful analysis can be carried out, and some key factors can be drawn, and finally the limit of human life span can be obtained. Where is it?
And through the comparison of the life cycle of these mammals, we finally discovered two key characteristics, one is the growth period of mammals, and the other is the sexual maturity period. For these mammals, life span is often growth. 6 times the period of sexual maturity is 9 times the period of sexual maturity, and according to this method, it can be concluded that the limit of human life span is about 180 years old.
From these two scientific calculation methods, we can know that the overall life expectancy limit does not exceed 200 years, and although the limit ranges from 144 to 180, in fact, no one can live that long. At present, the world's longest life People are only 122 years old. This is because such extreme calculations are in a very ideal situation. In real life, there are too many other factors, which will greatly reduce the life span of human beings. .
. Fundamentally speaking, it is because of genetic problems, and to be more careful, it has a lot to do with telomeres. In the animal kingdom, animals with longer life spans often have this kind of in their bodies. Telomerase that can repair telomeres, such as the familiar lobster.
Under normal circumstances, the life span of a lobster is actually very long, often reaching hundreds of years. This is mainly because the telomerase is present in the body of the lobster, which constantly helps the lobster to repair the damaged end Li. Of course, because telomerase does not spread all over the body of lobsters, although lobsters live a long life, they may die one day.
and for us humans, it may also be able to produce substances like telomerase for repairing. For this situation, we have also conducted large experiments. In fact, in our fetal stage, there are telomeres in the body. Enzymatic, but after birth, it disappears.
is not just as simple as disappearing. Biologists have discovered through a lot of observations that after this telomerase enters our body, there are only a few cells.Will accept them, and most of the cells will be instinctively eliminated and inhibited. As for why this happens? It is mainly caused by human genes.
seems to be the overall setting of genes. In the face of the natural environment, all living things must be born, old, sick, and die. This is mainly for the balance of the earth’s ecology to better allow their own populations to continue. This way of inheritance Although it is cruel for individuals, it is a very superior thing for the entire population.
The results obtained by these two calculation methods are also disappointing. Of course, with the development of science and technology, we are constantly exploring the microscopic world such as genes, hoping to find the secret of longevity!
