While weight loss might be a nice side effect of not having enough access to food, it’s also not particularly fun for some contestants.
While the revelation that food, or the lack thereof, is on the contestants’ minds at any given moment, is not a massive surprise, the rest is.
Most of the cast goes through at least a little weight loss during any given season, and some competitors have been known to drop a lot of weight during the month+ stay on the set.
Survivor makes it pretty easy to see all of the strife and discomfort the cast is going through, but I’ve never realized they were dreaming about comfort foods like pancake and peanut butter.