The 17-Day Diet is apparently backed by Dr. Phil. And unlike what its name implies, the entire diet isn’t 17 days long. Each phase is 17 days—and that’s going to feel even longer when you see how strict the first phase is. In cycle 1, called accelerate, you can eat fish and poultry, as many “cleansing” vegetables as you’d like, low-sugar fruits (but not after 2 p.m.), 2 servings of probiotic foods—such as yogurt, sauerkraut, kimchi and kefir—and tiny amounts of “friendly” fats, such as flaxseed and olive oils.
As with the Dukan Diet, the diet becomes more liberal as you “graduate” to the different cycles. For example, in phase 2 you can introduce lean red meat and whole grains, legumes and starchy vegetables.
Overall the 17-Day Diet is strict and, honestly, it’d be hard to follow without carrying the book around so you knew which foods from the various food groups you could actually eat. Also, the total daily calorie allotment from the meal plans provided is too low for some people, particularly if you’re active.