Omg- Angeline- can I ever relate to that!!
I worked at an office in the summer where it was ALL women between the ages of 30-60, and they were ALL overweight. All they did was whine about their latest fad "diet" and then they'd be gorging on cheese, donuts, and frappucinos. Yet when I had a healthy lunch, they were super critical of that, too..It was either "Oh, I can't eat that on my diet", or "Is that all you're eating?!" (as they eat a burger and fries). The break room was always fully loaded with snacks, cake for every occasion, etc, etc...
When they pressured me to partake in their giant buffet lunches, I usually made an excuse like "I have to much work to do- i'll come by later!"...and then I'd never show up. They'd usually finish everything off, anyway