中老年容易患的疾病。人到中老年，身体状况逐渐走下坡路，各个器官的功能开始减退，免疫系统低下，一些疾病就会随之而来。
帕金森氏病是一种典型的中老年疾病。
作为一种多发于中老年的疾病，男性发病率高于女性，比例为3：2。
As a disease whose prevalence is related with advancing age, it affects more men than women with a ratio of 3:2.
有可能根本改变我们治疗中老年人慢性疾病的方法。
There is potential for a fundamental change in the way we provide treatment for chronic diseases in older people.
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