IMO.....and observation of people....it's permanent. Whether mentally or physically, what we consistently hear is that we go back out and quickly find we're drinking more than before. Seems lots of comments to just that popping up this morning...as for the other stuff, I've certainly had a lot of that restored. I also find happiness and contentment etc in diff ways than before, even before the alcoholism took over. I do think that my brain has wiring that has a different baseline than other people- not an intolerance or definitive one like alcohol, but more fluid.
Sassy- sorry you are struggling too. Sounds like your husband has a non-alcoholic's reaction to what actually is "too much." And I can't count on a home free....I hope you keep being honest like you are and take extra steps. You've been sober since 2017 & we are proud.