That makes sense to me. The brain needs to be exercised and reading is a great way to do that. I suspect working puzzles, doing mathematical calculations, and other mental actions can also be of great benefit. I read not long ago that every time we learn something new our brains do not simply store it away in a storage bucket. The brain actually re-wires itself as we learn new things. So it is kind of like defragmenting an old hard-drive. The brain re-wires itself creating new pathways and in the process can bypass damaged areas. So read, read, read!!!!