Modern medicine and a healthy lifestyle have significantly contributed to the increase in human longevity.

longevity 是由形容词 long（长的）加上后缀 -ev（表示"年龄、时间"）和名词后缀 -ity 构成的名词。longev- 这部分来自拉丁语 longaevus（长寿的），-ity 是表示抽象概念的名词后缀。整个词表示"长寿、寿命"的意思。