Just adding my experience (my lawyer is looking over my shoulder telling me to included the disclaimer that individual results might vary) - I went cold turkey to a Primal diet (no processed foods, no grains, no legumes, no sugar) and did not experience a withdrawal period - I consider myself lucky.
I do get about two days worth of cravings if I go off-plan in any significant way even after months of following plan.
So be prepared for carb-flu and stay strong until it has passed. Almost everyone who goes "all-in" finds they feel way better, in innumerable ways.
All the best on your journey.
| current weight: 528.0