an EDIETS situation is a way of saying your life is so boring and bland that you feel every day is exactly the same, living in an EDIETS situation usually also means having a shallow existance and feeling like you don't have a voice anymore, EDIETS stands not for eDiets.com but rather "Every Day Is Exactly The Same" and is named after the NIN song of same name.
A: "Dude I feel like I'm having an EDIETS Situation right now"
B: "Oh, yeah I feel ya man"