Can Your Cholesterol Medication Cause a Fuzzy Head?

Dr. Sharon Orrange
Dr. Orrange is an Associate Professor of Clinical Medicine in the Division of Geriatric, Hospitalist and General Internal Medicine at the Keck School of Medicine of USC.
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For years, many of you taking statins to lower your cholesterol have complained of a fuzzy head and less clear thinking. Statins are among the most prescribed medications in the US, including simvastatin (Zocor), atorvastatin (Lipitor), pravastatin (Pravachol), and Crestor (rosuvastatin).

While studies have not shown statins to cause memory impairment, the FDA decided to listen to patients and add a warning on the label of statin drugs.

So, what are the supposed behavioral and cognitive effects of statins, and will you lose your mind over them?

  1. Depression and suicide. Although concerns have been raised about increased suicidal tendencies in patients treated with statins, they do not appear to be associated with an increased risk of suicide or depression.
  2. Irritability and aggression. There have been case reports of patients developing severe irritability and aggression associated with the use of statins. This has been reported but it is rare.
  3. Memory loss. Concerns have been raised about cognitive dysfunction and memory loss associated with statin use. However, a review of reports to the FDA up to 2002 found only 60 reports of patients who had memory loss associated with statins.

Are some statins worse for memory loss than others? Statins that cross the blood-brain barrier are called “lipophilic” statins. Simvastatin and atorvastatin are the most lipophilic while pravastatin and Crestor are the least. The statins that cross the blood-brain barrier have more reported memory and “fuzzy head” problems. While patients have reported these symptoms, further research does not show that statins cause memory loss. Some trials on simvastatin have shown some evidence of minor decreases in cognitive function, measured by neuropsychological testing, and that is important to know.

What do I do if I feel I have memory loss from my statin? If you recently started taking statins and develop memory loss associated with lipophilic statin therapy—simvastatin, Mevacor (lovastatin), atorvastatin, or Lescol (fluvastatin)—and you have a strong indication for lipid lowering therapy, it would be reasonable to talk to your doctor about treatment with a more hydrophilic statin—pravastatin or Crestor.

But don’t statins help prevent dementia? That’s why it’s hard to come up with a blanket recommendation about fuzzy head, memory loss, and statins. There have been several studies that suggest statins may have a role in the prevention of dementia.

See the pickle we are in?

Dr. O.

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