text:  All are key factors, and that's, say, the four elements you need for the brain to function at the highest capacity. Well, I can say that can be true in some cases. And, Joe, thanks so much for your call. I appreciate that. But I can say in my mother's case, my maternal grandmother had Alzheimer's, and my mother was aware of it. And she did crossword puzzles, word searches. She read. She did everything she could.