I took a fermentation class, which involved preparing fermented products and eating those prepared by the previous class, and taking some home. I've been eating a bit everyday, a bit of sauerkraut, kimchi, and some pickles, with la combination of crackers, cheese, and hummus.
To my surprise, my appetite has gone down substantially. I'm now far less hungry and thus eating less. It could be a fluke, I'll wait a couple weeks to be sure, but if so and if this is the reason then that's really cool.
I've also started a kombucha cycle. The first batch was ok but I should have left it to ferment for longer, it was still too sweet.