Everyone processes fatty foods differently. Fatty foods have nothing to do with acne or the quality of your skin. If anything, hormones control your fat intake, not the other way around. Not to mention, some people metabolize foods so quickly it's not in their system for very long. I'm a little confused where you're getting this information.
Omega 3's ARE good for your skin. You're right about that. Essential fatty acids do lots of good.
I don't need to use steroids to know their effect on the body. You should know what you're putting into your system and what effects they have if you are personally taking steroids. Please educate yourself.