英语语法分析

Statin drugs lower cholesterol.

他汀类药物还可以降低血液胆固醇水平。

However, in many cases niacin is a good drug for reducing statin levels, he adds.

然而，他还说，很多情况下尼克酸是降低抑制素水平一种很好的药物。

I've heard that taking statin drugs to lower cholesterol can cause memory loss?

我已听说服用司他汀药物降低胆固醇会引起记忆力丧失。