Rejuvenation, originally a Taoist language, refers to ancient art. It can be seen that as early as thousands of years ago, people dreamed of recovering their youth from aging. But today, people still have different views on whether they can be rejuvenated.

Some people think that all living things will age and die, aging is an irresistible law of human beings, and rejuvenation is only a beautiful wish of human beings, which cannot be realized.

However, some people take some cases of "rejuvenation" in life as evidence, and think that rejuvenation is a dream that human beings may realize.

Some people think that although human beings can't resist the law of aging, they may be able to slow down the process of aging through hard work.

At the end of last century, Mechnikov, a Russian biologist, thought that the bacteria in the large intestine would release toxins that make people aging, and thus put forward the method of eliminating bacteria in the large intestine to inhibit aging. At the beginning of the 20th century, French surgeon voronov believed that the decline of human function was caused by the degeneration of various glands. If young people's organs can be transplanted into old people, their youthful vitality will be restored. Later, Carlisle of England suggested that human aging is due to the increase of inhibitory substances in serum. Opinions vary, and no one can agree.

195 1 British biologist Medawar pointed out that with the decline of cell proliferation and division function in human body, the tissues and organs composed of these cells are bound to age, and the life function will gradually decline, so will the human body. This is a relatively complete argument that aging is related to cell aging.