Q. My doctor prescribed rosuvastatin for high cholesterol. After taking it for six to nine months, I noticed that my cognitive function had slipped. I would not be able to find the word I was looking for. My family also noticed this cognitive decline.
I stopped the rosuvastatin and, in a fairly short period of time, my full cognitive function returned. I do engineering-type design work, and it is critical that I have full mental capacity.
A. Health professionals have been arguing about statin side effects for years, especially when it comes to cognitive impairment. Many discount this complaint, but other readers have reported problems like the ones you describe.
The official prescribing information for rosuvastatin (Crestor) includes the following: “… rare postmarketing reports of cognitive impairment (e.g., memory loss, forgetfulness, amnesia, memory impairment, and confusion) associated with the use of all statins.”
An article in the journal Medicine (Sept. 5, 2025) asked the question: “Are lipid-lowering drugs harmful to cognitive performance?” The authors’ answer: “This study suggests that statins and ezetimibe [Zetia] may have adverse effects on cognition, while PCSK9 inhibitors [Praluent, Repatha] and fibrates appear to have no such effect, which may help clinicians make more informed prescription decisions.”
To help you and your doctor determine other ways to lower your risk of heart disease, you may wish to review our “eGuide to Cholesterol Control & Heart Health.” This online resource may be found under the Health eGuides tab at www.PeoplesPharmacy.com.
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In their column, Joe and Teresa Graedon answer letters from readers. Write to them in care of King Features, 628 Virginia Drive, Orlando, FL 32803, or email them via their website: www.PeoplesPharmacy.com. Their newest book is “Top Screwups Doctors Make and How to Avoid Them.”