Why do humans grow old and die, and why do people die of aging?

Because there are countless cells in the human body, and there are fewer and fewer new cells as we get older, so people die of aging because most of the body's cells die first and are rarely reborn.

Categories: Education, Science, >> Science & Technology.

Problem description: Please from multiple angles!

Analysis: From a philosophical point of view, this is because everything, including life, has a process from generation to development to peak to decay and finally extinction.

From an ecological point of view, the birth, aging, sickness and death of all life can maintain the balance of the natural world, after all, the life that the earth can carry is limited.

From a physiological point of view, this is because the human life process is a metabolic process, but metabolism is actually the result of two opposite forces and processes acting at the same time, in the growth stage, the number and speed of new cell generation exceeds the number and speed of old cell death, so people will grow taller, weight gain, internal organs will continue to increase, to adulthood, these two forces are evenly matched, so people's height, weight and function maintain relative stability, in old age, the speed of new cell generation is greatly slowed down, This manifests itself in a gradual decline in human functioning.

From a sociological point of view, a person's life is a process of continuous harvest and giving, especially after adulthood, the pressure of family and society are pressed on the individual's body, which makes people physically and mentally exhausted and urges people to age.

Summary. Because of microcirculation.

Man-made is gradually aging towards death, rather than dying immediately.

Because of microcirculation.

The microcirculation is located at the outer and distal ends of the body, and these places first form stasis and blockage, and then slowly spread inward, generally one percent of the annual stasis and blockage. When a person reaches the age of 50, the microcirculation stasis reaches about 50% (more than half), and the human body begins to age rapidly. By the age of seventy or eighty, the microcirculation is blocked to 70-80%, and basically only the middle part of the human body circulates smoothly, and the microcirculation of the limbs and distal ends is basically not good, and the human life is almost at an end.

Is there anything else. Pain is a good thing, indicating that the blood circulation has not been completely blocked, and the body is producing self-help and impacting "stasis". And once it's blocked, you won't feel the pain, which will ruin a big deal.

Just like many people have varicose veins, we can clearly see that all the blood vessels are blocked, but does anyone feel pain?

Joints and capillaries. There are many internal and external gaps in the joints, which are called acupuncture points in traditional Chinese medicine, which are the "breakthroughs" for the invasion of external evils and the external discharge of internal evils. Therefore, we must not underestimate or ignore the abnormality of the joints, this alarm signal is the most important, and the fastest and most effective way to "dispel evil" through massage and aerobic activation exercise.

The capillaries are all in the microcirculation, and the joints are mostly capillaries, because generally the large and medium blood vessels will not be blocked.

In medicine, 'natural death' refers to the natural development of life and disease, without violent intervention.

Death that occurred. It is divided into death from aging and death from disease. Death due to disease is well understood, and the human body has 'respiratory arrest', 'pulse arrest', 'cardiac arrest' or 'brain death' due to various diseases.

And then there's what you call natural aging. What is the human body made of? Some people say that **, bones, organs, some people say, 'head, neck, chest and abdomen, hips, legs, hands', etc., in fact, it can be said simply, all kinds of life are composed of 'cells', whether it is bones or hair, they are composed of cells.

The lifespan of cells is long and short, that is to say, the cells in our body are constantly renewed, when we are young (long body), cell generation is greater than death, so we are growing, but one day there will be a generation that is not enough to make up for the amount of death, at this time 'aging' will begin, this aging can be delayed, such as: usually exercise more, pay attention to dietary hygiene, develop good habits, etc. But, in any case, natural death is inevitable and can only be delayed.

When one day, due to the aging and death of cells, the organs such as "breathing", "heart" and "brain" stop working, then it means that they have died naturally. The above answer is what I typed word by word, try to say the vernacular, recognize the ** points, thank you.

Everything will have a process of oxidation, the human body source is no exception, the human body needs the oxygen in the air, but after the oxygen enters the human body, it will oxidize the human body's fine dao cells, producing a harmful substance, free radicals, which are harmful compounds produced in the body's oxidation reaction, with strong oxidation, which can damage the body's tissues and cells, and then cause chronic diseases and aging effects.

Scientists have shown that if the human body is not attacked by free radicals, it can live to be at least 160 years old.

The anti-aging products developed now are basically studying antioxidants, and this word is often heard in skin care product advertisements, and such and such a product can be antioxidant.

In some beauty and skincare programs, you will be told which foods to eat more will be antioxidant and so on.

In addition, the preservatives added to food also belong to this category, and it can also be jokingly said that delaying aging is a study of the antiseptic treatment of the living human body, hehe.

Cells first senescent and apoptosis, then tissue necrosis, then organ atrophy and loss of function, and finally the human body as a whole dies.

Will the machine wear out after a long time? Is it necessary to explain that the components of the human body are constantly renewed, such as water... Children should read more books, this problem is too big, and they will not be able to explain it for a while.