I agree with Tashinpa (Hi, here we Germans meet again!) - and in Germany you find Vollkornbrot which is whole grain bread that is really whole grain, not enriched afterwards stuff, and no high fructose corn sirup in anything from Joghurt to what not.

You won't find Atkins shakes and bars, but you might want to look out for items for the Glyx Diet- that is similar to South Beach and is the new German low carb diet based on glycemic index (the word is a pun because it sounds like happiness diet when you pronounce it). LC food might be sold as Glyx-compatible.