有很多关于咖啡对人影响的说法，但是很少人在讨论咖啡对心情的影响。

There's been a lot of talk about how coffee might be good or bad for you but not many people are discussing it's effect on mood.

关于陈奕迅，关于咖啡，关于生活。

About Eason Chan, about coffee, also about life.

这些仅仅是关于咖啡用途的一小部分。

These are just a few of the many uses for coffee.

在这段时间里，关于咖啡对人们健康的影响的研究一直存在矛盾。

During that time, there have been contradictory studies about coffee's impact on people's health.

关于咖啡益处和害处的医学研究的证据有很多。 （看这里和这里）。

There is a good deal of medical research to validate both sides of the argument (see here and here).