To answer the question below, DUKAN is a strict low carb approach. It alternates phases of Pure Protein (days when only proteins are allowed, no veggies at all), and PV (Protein and vegetables, including starch veggies); it also focus on low fat. It is extremely limitative, only no fat cheese and dairy, grilled meats and fish, no nuts.
Last week I restarted on the LC after a long-ish hiatus, and I tried out Dukan, given to the international hype.
In fact, I naturally drifted back to a simpler approach, keeping some points.
On one side, I find that the Pure Protein phase is too severe, and limits too much preparation of REAL FOOD. I think food is part of life, and not life part of food, so it is important to me that it can be followed for long term; the idea of one day of Pure Protein per week for LIFE is scary for me.
Excessive frustration drives cheating, at least for me.
That said, I keep from the Dukan methodology the Galette of Oat Bran.
good way to make on the go LC sandwiches and wraps.