The Neurology article is paywalled. From the abstract:<p>&gt; No association was found between AD risk and use of acetaminophen (RR = 1.35; 95% CI: 0.79-2.30), and there was no trend of decreasing risk with increasing duration of use.<p>Depending on the methodology (no multiple regression?) and the possible association between NSAID and paracetamol intake, there may be a smoking gun, right there :-)