This is the beauty of Atkins....discovering what foods your body can and can not tolerate! Adding foods back in one at a time makes a huge difference. Pain? Yes! Worth it? Yes!!!! I've discovered that I have an intolerance to dairy and need to AT LEAST be careful with cherries. I don't think any other plan has you adding foods back in one at a time to test for allergies/intolerances. This is how the plan is individualized. LOVE IT!!!