Some one in main stream health finally got Zone right as NOT a low carb diet!
And their article is close about their recommendations to where some Zoners fall.
Here's the small portion of text, and then the link!
But all diets are dependent on one common factor: macronutrient composition. That is, the protein, carbohydrate, and fat content in the foods you eat. Macronutrients are the single most important factor that determines a diet’s success or failure. Every diet has its own macronutrient manipulation. On one end of the continuum are the low-carb diets, such as Atkins and Protein Power (and some variations of the Paleo Diet). More towards the middle are diets like The Zone and South Beach. On the other end of the continuum are high-carb/low-fat diets such as Pritikin and Ornish.