I know what you mean. If I want to talk about losing weight, I'll come over here
I don't want to talk about losing weight with my co-workers. It's none of their business actually. Unfortunately, they just appear unable to comprehend such things and yack on about my weight, that I've lost so much weight... etc....
At company parties everybody's always trying to help me watch my weight. "I wouldn't do that if I were you", "Are you sure you're getting another one?"
Things like that. I've had it with that kind of nonsense. I'm a big boy, and can watch myself now.