OP here. I have read all the replies and the "What the hell is real food ?" appears several times.
In this context, "real food" means anything that you would find in nature in the same form - excluding changes due to cooking - as you would eat it. Some examples:
- Potato, orange, nuts, milk, eggs, meat: Real food
- Bread, Pasta, Chocolate (no cocoa): Nope
I know that this leaves lots of grey zones (butter, coffee, ...), but you get the idea.
I cannot help but recognize that my approach is very simple; some would say simplistic, and I would partially agree, but it has been working great for me. Bear in mind that my metabolism is completely broken, so you mileage may vary.