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Conceptual Foundations of the UCSD Statin Study
A Randomized Controlled Trial Assessing the Impact of Statins on Cognition, Behavior, and Biochemistry
Beatrice Alexandra Golomb, MD, PhD;
Michael H. Criqui, MD, MPH;
Halbert White, PhD;
Joel E. Dimsdale, MD
Arch Intern Med. 2004;164:153-162.
Background Statin cholesterol-lowering drugs are among the most prescribed drugs in the United States. Their cardiac benefits are substantial and well supported. However, there has been persistent controversy regarding possible favorable or adverse effects of statins or of cholesterol reduction on cognition, mood, and behavior (including aggressive or violent behavior).
Methods The literature pertaining to the relationship of cholesterol or statins to several noncardiac domains was reviewed, including the link between statins (or cholesterol) and cognition, aggression, and serotonin.
Results There are reasons to think both favorable and adverse effects of statins and low cholesterol on cognition may pertain; the balance of these factors requires further elucidation. A substantial body of literature links low cholesterol level to aggressive behavior; statin randomized trials have not supported a connection, but they have not been designed to address this issue. A limited number of reports suggest a connection between reduced cholesterol level and reduced serotonin level, but more information is needed with serotonin measures that are practical for clinical use. Whether lipophilic and hydrophilic statins differ in their impact should be assessed.
Conclusion There is a strong need for randomized controlled trial data to more clearly establish the impact of hydrophilic and lipophilic statins on cognition, aggression, and serotonin, as well as on other measures relevant to risks and quality-of-life impact in noncardiac domains.
From the Departments of Medicine (Drs Golomb and Criqui), Economics (Dr White), Psychiatry (Dr Dimsdale), Family and Preventive Medicine (Drs Golomb and Criqui), and Psychology (Dr Golomb), University of California, San Diego. The authors have no relevant financial interest in this article.
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