[adrianmonk]

> After being meat and dairy free for awhile my cravings changed.

I think this may work for any dietary change that you stick with consistently. I'm not a vegetarian, but I completely revamped my diet several years back, and at first I craved the old foods, but now I crave the new ones.

I'd bet part of it is as simple as being hungry, eating something, and then not feeling hungry anymore. Satiating your hunger is a good feeling, and over time you're going to learn to associate that good feeling with its causes, which are whatever you eat regularly.