Sorry, this wasn't aimed at you specifically, but at all the jokes on here (from all different people) on the subject. I know everyone who posts intends it to give a laugh. It's just that there are so many on the same subject. I'd reached the "Enough already!" point when I saw it. Didn't mean to trash your thread.
I agree that laughter and attitude are very beneficial, but in fact, poor health can bring on memory loss in old age. So staying healthy is one way to prevent some forms of memory loss and minimize others.
I did not, however, mean to turn your humor thread into a discussion on memory loss. Again, sorry.