Nah, that's the beauty of the "clean slate" that's created after 30 days of elimination. You aren't automatically going to have a negative reaction just because you've avoided something for 30 days. It carageenan makes you itchy, or soy makes your fingernails hurt, that's going to be a specific thing you're going to want to take note of. We can all "get used to" stuff and have a "new normal" --- that's why people who move from Oregon to Nevada all of a sudden report stuff like "holy crap, I can breathe better!" If they just lived in Nevada for 30 days, then moved back to Oregon, well, sure,