I think I might have that same problem.. .
The day after i have a really good session, I can go all day with out eating. I know that I am hungry (I'm a bit on the larger side), I get the stomach growns and the craving but I just dont want to eat. even if im in the process of getting food, lets say fast food, just looking at the food and smelling it makes me not so hungry anymore. But as soon as I toke it up I can eat like theres no tomorrow. I figure its cause my body is use to eating while i am :stoned: so when I am not my mind doesn't feel like it. Plus I tend to eat a good amount when I am :stoned: