これもいろいろある

 ⇒Cholesterol-lowering Drugs May Not Prevent Alzheimer's Disease, According To New Study

Contrary to some reports, taking statins, which are cholesterol-lowering drugs, offers no protection against Alzheimer's disease, according to new research.

 極東ブログのほうで専門家さんらしい人がいろいろコメントされていたけど、まだ定説はなさそう。