Simply my own thoughts, but I think any cognitive activity that is intensely practiced protects against cognitive impairment. My grandmother reads a lot of nov

Simply my own thoughts, but I think any cognitive activity that is intensely practiced protects against cognitive impairment. My grandmother reads a lot of novels, including quite complicated ones and does a lot of language puzzles, yet only knows one language. I'm sure that if she would only watch television and not read a lot of (medieval-based) novels and language puzzles, then she will experience cognitive decline earlier in her life. I think the mantra "use it or lose it" is quite true in nature, in general.