I find it awkward when I encounter friends at work that talk about how they got ripped the night before or just that they drank two bottles of wine. I always play along but don't offer too much back. They might say they like a certain type and I will agree or disagree based on my actual knowledge but I won't divulge my past drinking to them.
If they mention a hangover I will suggest things that help but I never tell them it is from direct experience. I have never bothered to tell them that I am an Alcoholic although my closest work friends and my Boss know.
We live in a society of addicts, whether they are addicted to Alcohol or cigarettes, Snacks or Soda or Coffee there is more than enough addictive things to go around.
I am trying to get addicted to healthy habits but I am nonetheless participating in our addictive society when I do even healthy things.