It found aspirin most likely has a protective effect.<p>It found no strong evidence of any association for acetaminophen, but the 95% confidence interval on the result is pretty wide. So it doesn&#x27;t entirely rule out the possibility of there being a relationship, and based on its results alone it&#x27;s entirely plausible that a test with more statistical power could find that it doubles your risk of Alzheimer&#x27;s disease. But it could also plausibly find that it has a mild protective effect.<p>Regardless of which is the case, this study still strongly challenges what&#x27;s being suggested by TFA. Even a doubling of Alzheimer&#x27;s risk resulting from a lifetime of acetaminophen use is nothing at all like its suggestion that Alzheimer&#x27;s is a disease that was unheard of before the development of NSAIDs related to Tylenol.