This book resonated with me, especially after having done KETO which always felt unhealthy. There aren't any food off limits which makes a lot of sense. The idea is that you are incorporating more fiber into your diet which keeps your carbs down, and keeps your digestive tract working in full capacity, and it keeps you fuller. Once you track even a days worth of fiber you realize how deficient you truly are, and for me I realized how many carbs I was eating to stay full. I enjoy the FFactor 20/20 protein powder although it's not available other than by mail if you don't live in NY, I think she's on to something. You can make tons of food from her protein powder, muffins, waffles, hot cereal the list goes on, all high fiber, all pretty good. Further more, the "fiber" community is pretty strong on social media so there are plenty of different recipes floating around, it's simple and with a few staple items, I've really changed my eating habits. The best part is Tanya even gives you tips on what to order when you are out, she categorizes them by type ie. Mexican Food, French, Chinese the tips are great and arm you with a confident feeling that you can stay on this eating plan, if you eat out a lot or very little.