Yes, it is. I agree with Ayla - stick to the book for a long time, despite what tweaks you read about here. Some folks can't resist playing around with the Primal, a very few are simply idiots, and some others have serious medical issues that complicate things, and if this isn't you, just stay on the straight and narrow.
Your body is going to do some stuff to you as you get lighter and healthier, so try to relax as it happens. In time, you will learn where your sweet spot is in regard to Primal nutrition. And welcome to the MDA!
I have a mantra that I have spouted for years... "If I eat right, I feel right. If I feel right, I exercise right. If I exercise right, I think right. If I think right, I eat right..." Phil-SC