I need to lose weight, so no comments directed to me, but it does drive me mad when others are making the effort to lose weight & people trying to push cake or sweets on them. Remember one "friend" getting into a right huff with me in the past because she brought cake in for me, knowing full well I was on a strict health kick, and I wouldn't eat it!
There's a guy on the radio named Tom Leykis who says - in so many words - that friends and family are dream killers. If you're trying to go to school or work harder to further your career, they call you a workaholic. If you're trying to lose weight, it's "C'mon, one bite won't hurt; besides you exercise so much". It's schtick, but there is a degree of reality to it...