[petesergeant]

I've had both a good diet and a bad diet...

> has it changed what foods are desirable

No, although anecdotally some people find they can't eat high-fat foods any more. It has changed my reaction to hyperpalatable foods though, in that I don't really get the buzzing "just smoked a cigarette" effect from them any more.

> when using these products and switching to a healthy diet such as high protein, which already typically affects satiety, does it cause the inability to eat an adequate amount of calories to function properly

Not if you don't ramp your dosage up too quickly, but if you were to overdo it, then I guess it would.