The book does say no sweeteners, but I think the author has said elsewhere that a tiny amount would be ok. Most of us used something like Splenda in our oatmeal and it didn't affect our weight loss. I think the main point is to get away from processed foods and chemicals, and focus on whole, natural foods
I also agree about the condiments. Really, the book was lacking a lot in the way of details and left many of us confused.