Before surgery, I took the approach of only telling my immediate family and the people I go to lunch with all the time. I figured they were surely going to notice the change in intake choices, even as I started the pre op diet. I didn't want anyone to talk me out of the decision I had made for me!
Afterwards, I realized I had told the people that mattered in my daily life.
None of the people I told had ever commented that I ate too much, and they don't comment now that I eat too little, they are the ones that are just glad that I'm there to share the meal with them.
I was so worried about how eating = social event was going to impact me. Guess what? I found its even more social if I'm not stuffing the pie hole!!
I don't care who knows now. If their opinion of me changes because of the surgery, they aren't the type of person I value.