What do I tell others if I don't want to tell them I am having VSG?

I told people at work I would be out having surgery, and not one person asked what kind of surgery.  (I do seem to broadcast a privacy vibe, I think, that people tend to respect.)  I also played it down, not a lot of hoo-rah or drama around my absence.  I think it helps that I work from home 2-3 days a week, so being out of the office wasn't all that noticeable.  I learned a couple months later that one person assumed I was having knee surgery, since I've been suffering with my knee forever, which made me laugh!

And I don't think people have associated my weight loss with that week I was out having surgery, either.  Or if they do they haven't confronted me about it.  (Again, it's a pretty respectful workplace.)  If people ask me how I did it, I say lower portions, low carb.  Which is the truth.