Currently I a non-drinker have non-alcoholic fatty liver disease which sucks because it's insulting for me to have of all things what is considered a disease of heavy drinkers. It hurts, I mean my liver actually hurts and it's frightening to have a problem like this a damaged organ in my body. I'm not even fat my friends all ask how I keep so thin, I mean I'm 5'8" short for a guy and at my peak I was 180 pounds but you'd never know it by looking at me, but all my life up to a few years ago I was a consistent 150 pounds. I'm down to 165 pounds but still my doctor telling my my risk of heart attack and stroke is double due to a fatty liver, and this from a family of people who all die from a stroke or heart attack.
Your liver is precious! I don't think people realize how important it is they hear jokes about their liver when drinking to the point it's a joke or just noise more than advice. Then Tylenol the next day to fix their hangover which damages the liver even more.
You liver is the only organ which can regenerate but I would guess not from systemic damage only physical damage to specific defined areas.
Long live our livers!