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Kullanmaya devam edin! Kolesterol ilaçları hafıza kaybına yol açıyor

1987- 2013 yılları arasında 482.543 statin kullanan, 26.484 hiç statin kullanmamış ve 68.028 statin harici lipid düşürücü kullanan olmak üzere toplam 577.055 kişi üzerinde yapılan araştırmada statin kullanılmaya başladıktan 30 gün sonra akut hafıza kaybı ortaya çıkmıştır. Gerek statitnler gerekse statin dışı lipid düşürücüler anlamlı olarak ilaç kullanmayanlara nazaran 4 misli daha fazla hafıza kaybına sebep olmuştur.
Statin Therapy and Risk of Acute Memory Impairment
Brian L. Strom, MD, MPH1,2,3; Rita Schinnar, MPA2,3; Jason Karlawish, MD4,5; Sean Hennessy, PharmD, PhD2,3; Valerie Teal, MS2; Warren B. Bilker, PhD2,3
JAMA Intern Med. 2015;175(8):1399-1405. doi:10.1001/jamainternmed.2015.2092.

Importance Reports on the association between statins and memory impairment are inconsistent.
Objective To assess whether statin users show acute decline in memory compared with nonusers and with users of nonstatin lipid-lowering drugs (LLDs).
Design, Setting, and Participants Using The Health Improvement Network database during January 13, 1987, through December 16, 2013, a retrospective cohort study compared 482 543 statin users with 2 control groups: 482 543 matched nonusers of any LLDs and all 26 484 users of nonstatin LLDs. A case-crossover study of 68 028 patients with incident acute memory loss evaluated exposure to statins during the period immediately before the outcome vs 3 earlier periods. Analysis was conducted from July 7, 2013, through January 15, 2015.
Results When compared with matched nonusers of any LLDs (using odds ratio [95% CI]), a strong association was present between first exposure to statins and incident acute memory loss diagnosed within 30 days immediately following exposure (fully adjusted, 4.40; 3.01-6.41). This association was not reproduced in the comparison of statins vs nonstatin LLDs (fully adjusted, 1.03; 0.63-1.66) but was also present when comparing nonstatin LLDs with matched nonuser controls (adjusted, 3.60; 1.34-9.70). The case-crossover analysis showed little association.
Conclusions and Relevance Both statin and nonstatin LLDs were strongly associated with acute memory loss in the first 30 days following exposure in users compared with nonusers but not when compared with each other. Thus, either all LLDs cause acute memory loss regardless of drug class or the association is the result of detection bias rather than a causal association.