Updated: May 9, 2020
Statins are cholesterol medications that we use to prevent heart attacks and stroke. It is true that there are possible side-effects to these medications. If we can get by without using them, we do. For those with a significant health risk from their cholesterol though, volumes of medical evidence prove that they reduce health risks. One concerning side-effect has been the potential for memory problems. This recent study is a more robust look at that and suggests that these medications do not cause cognitive impairment.
https://www.nytimes.com/2019/11/18/well/live/statin-drugs-not-linked-to-memory-decline-in-study.html