Food addiction is a problem for many and yes, it does include obsessive behavior as any addiction will. (I can vouch for that, personally)
When you constantly obsess over what you are eating, how much of it is available, what you will eat next, how you can sneak off to binge, etc., etc. - that's a food addict.
I think I would prefer to try to overcome my food addiction without meds if at all posible but we all must do what works best for us as individuals.