The researchers caution that their findings only show a link, not a cause-and-effect relationship, between optimism and health outcomes.

研究者们警告说，对于乐观和健康结果之间的关系，他们的研究结果仅仅只表明了一种相关性，而不是“原因和结果”的关系。

youdao

The researchers caution that their findings only show a link, not a cause-and-effect relationship, between optimism and health outcomes.

研究人员提醒说，他们的发现只是显示乐观与健康存在一种联系，但并非因果联系。

youdao

It's hardly clear that there is a causal relationship between optimism and health; it could be that they are related to the same underlying gene complex or set of mechanisms.

乐观的生活态度与健康之间是否有着因果关系尚难明确；有可能是相同的潜在基因综合体或者是某种生理结构使之然。

youdao

And that's partly, they say, because optimism is good for our health.

CNN: Is optimism really good for you?