At work, I have told some people and not others. I'm in the process of switching departments at work which complicates things a bit. More people in the old department know than the new one. I figure once the surgery is scheduled, I'll tell everyone.
The only person who hasn't been very supportive so far is my sister. She's a low fat, low calorie that's the way to go type person. I've lost weight before doing higher Protein and good carbs and she questioned that. She's going through a rough time so I am being really supportive of her but I'm not feeling the love. I sent an email update to the siblings and she didn't respond. I sent her another update after my last doctor's appointment and asked how things were going with her. She responded to the question about how stuff was going but ignored the other stuff. Hey, at least she isn't outwardly attacking the idea.
My younger brother is my cheerleader right now. He's getting ready to start his own bariatric journey, too.