https://pagesix.com/2022/03/30/bruce-willis-had-cognitive-issues-on-recent-sets/ The article says the issues go back to 2020. I had no idea he had a gut! Wow, that is a major contributing factor. You may not know this yet, but scientists now refer to Dementia, Alzheimers, et al as Diabetes Type 3. Your brain becomes insulin resistant and loses function. How can you avoid it? #1 cut out sugar and most carbs. #2 take care of your liver (and gut). #3 Keto diet (periodically), MCT oil , Choline and lots of all the B vitamins. Your brain can operate on Ketones rather than Glucose.