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任何生物都要经过“出生、发育、成熟、衰老、死亡”5个阶段走完生命的全过程,衰老是生物界不可抗拒的自然规律。遗传基因赋予人类的最高自然寿限是100～120岁。尽管科学技术的发展使人的平均寿命不断提高,但百岁老人仍是少数,我国至今不到十万分之一,可见早衰现象是相当普遍的
Any creature needs to go through the whole process of life in five stages of “birth, development, maturity, aging and death”. Aging is an irresistible natural law in the biological world. The maximum natural life time a gene confers on humans is 100 to 120 years old. Although the average life expectancy of people continues to increase despite the development of science and technology, centenarians are still a minority, less than one in 100,000 in our country so far. The phenomenon of premature aging is quite common