I don't offer it up, but if I'm asked I will tell them. Most of the time it is people like me, (pre surgery me) wanting to know what I have done. I want to help as many people as I can make their own decision about weight loss. This has been a significant life choice and I am healthier and happier about life for it. Just want to let people know there is hope out there.
I do, however, understand wanting to keep it quite at the workplace.