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肺是人体重要脏器之一,因此肺老化亦为人整体老化过程的一部份。生物都要经历生长、发育、衰老和死亡。肺也和机体内其它器官组织一样,在经历这些过程后最终功能活动停止。据研究,人的肺脏在12岁以内为生长期,在此期内肺泡数目增多,肺的各种功能值亦增加,女性在20岁以前、男性在25岁以前为发育期或成熟期,在此期内肺泡数目继续增多,最后可达到初生期的18倍,功能亦随之增长。
Lung is one of the important organs of the human body, so lung aging is also part of the overall aging process. The creatures all experience growth, development, aging, and death. The lungs, like other organ tissues in the body, eventually stop functioning after they have undergone these processes. According to the study, human lungs are within the 12-year-old growth period, during which the number of alveoli increased, various functional values of the lungs also increased in women before the age of 20, men before the age of 25 for the development or maturation, in During this period, the number of alveoli continues to increase, reaching 18 times of the first birth and finally increasing in function.