By Mizpah Matus B.Hlth.Sc(Hons). The Zone Diet was created by Dr. Barry Sears. At the heart of the Zone Diet is its nutrient ratios. The Zone Diet follows a formula of 40% carbs, 30% protein, and 30% fats (sometimes called 40:30:30).This must be followed at every meal.Considered by some to be the perfect diet.y Mizpah Matus B.Hlth.Sc(Hons). The Zone Diet was created by Dr. Barry Sears. At the heart of the Zone Diet is its nutrient ratios. The Zone Diet follows a formula of 40% carbs, 30% protein, and 30% fats (sometimes called 40:30:30).