Princess, I was just poking around the internet and my state's requirements: looks like there's a lot more education required these days than when I was a, "nutritionist." That's a good thing, there was a lot of bad info in the past. I'm not licensed.
Still, I'm standing by my previous statements. Weight loss is all about calories. That's a pretty simple math equation. I didn't have to give up foods that helped me meet my protein, fat, and carbohydrate requirements. Of course if someone has trouble processing gluten or dairy, that's a medical reason.