respectfully, could it not be the medication but the activity that results from the medication?
I am assuming they factored for that in their data, but who knows.
My thoughts exactly. One of the few activities that shuts down the brain completely and gives it a chance to rest . . . LOL!
....or, the activity causes a heart attack so fewer people live long enough to get Alzheimer’s?
respectfully ...
Viagra was originally developed as a treatment for high blood pressure. The notorious side effect was discovered during trials.
Given the notoriety of the side effect, a well designed study would correct for such activity. Not sure how ... ask the participants how often?
In any case, it should not be surprising that some drugs have beneficial effects beyond those envisioned in their initial development and trials.
It’s hard to tell.