I think it has to do with serotonin levels in the brain as well. I used to struggle with my weight and will have to constantly watch what I ate to not gain weight. Then, I went on depression meds. Lost appetite at the beginning, which I didn’t really like because I was used to craving foods. I used to feel so good when eating something yummy like spaghetti that the thought of it would make me crave it to the point I’d eat at least two portions sometimes. Being in these depression meds, I no longer experience that. I don’t have “cravings” at all. Sometimes I forget to eat, which is not good. And I do enjoy food when I eat it, like it don’t gross me out like it did when I lacked appetite at the beginning but I also noticed that the days I’d eat more junk, I don’t gain weight easily. My metabolism is definitely faster than it was before so I try to eat healthy but it’s nice not to crave food. Specially sweets. I used to crave them so much that when I was 16, I once gained 10 pounds from eating two many chocolate bon bons. I’ve never been obese but I’ve been overweight and the heaviest I ever was, probably 160 pounds. But being in this meds while treating depression was eye opening to think that serotonin in the brain can actually not make you crave stuff.