目前,中国是世界上老年人口最多的国家,且正在以每年3%以上的速度快速增长,是同期人口增速的5倍多。据统计,截至2014年底,我国60岁以上老年人口已经达到2.12亿,占总人口的1 5.5%。到2020年老年人口将达到2.43亿,约占总人口的18%。据预测,本世纪中叶老年人口数量将达到峰值,超过4亿,届时每3人中就会有一个老年人。随着年龄的增长,人将避免不了老化,出现身体功能下降,疾病逐渐增多,老年人中的慢性疾病 At present, China is the country with the largest population of the elderly in the world and is growing rapidly at an annual rate of over 3%, which is more than five times the population growth rate over the same period. According to statistics, as of the end of 2014, the population aged over 60 in China has reached 212 million, accounting for 15.5% of the total population. By 2020, the elderly population will reach 243 million, accounting for about 18% of the total population. It is predicted that the number of elderly people in the middle of this century will peak at more than 400 million and there will be one out of every three people by that time. With age, people will not be able to avoid aging, there will be a decline in physical function, disease gradually increased, the elderly in chronic diseases