This is the struggle, respecting autonomy while still caring for someone

Say I saw his health declining, I'd mention it - but I probably wouldn't expect much of it either, considering

Edit: thinking on it, the effectiveness comes down to method

Articles like this one are understandably inflammatory.

Similarly, if I called my father something awful, I couldn't expect a good result. Asking how he feels does nothing

We'd both be better off if I offered to cook him some meals, for example