Loss of appetite?

[MagnoliaMills]

Started Rebif about 4 weeks ago. I've done really well with it. No injection site side effects. No serious pain. But I've noticed that I'm not as hungry as I used to be. I've been eating less, and when I do eat, I get full really quickly. I used to have a HUGE appetite too. This isn't really much of problem to me, but I'm just curious if this has happened to anyone else? or maybe it's just me?