It's definitly an issue among witnesses. I am still in and I can definitly spare a few pounds. that's one of my goals as i leave the Borg. To get much healthier. I think a lot of it comes down to not viewing this as the real life.
i know that there was some kind of edict was sent down to all COs within the last few years that they need to lose weight And be healthy. One CO (azar) was huge. Last I heard he lost most of the extra weight. I think all traveling brothers were told to either be at there optimum weight or they were no longer going to be COs.