A number of early reports suggested that the risk of AD was reduced in patients taking an HMG CoA reductase inhibitor (statin) (Wolozin et al. Arch Neurol 2000; 57: 1439-1443, free full text at http://archneur.ama-assn.org/cgi/reprint/57/10/1439; Rockwood et al. Arch Neurol 2002; 59: 223-227, free full text at http://archneur.ama-assn.org/cgi/reprint/59/2/223).
A rationale was that statins reduced beta-amyloid formation in the CNS (Fassbender et al. PNAS USA 2001; 98: 5856-5861, free full text at www.ncbi.nlm.nih.gov/pmc/articles/PMC33303/pdf/pq005856.pdf; Sjogren et al. Dement Geriatr Cogn Disord 2003; 16: 25-30).