Until more is known the original Food Pyramid should be viewed with suspicion as a remedy for all. There is ample evidence that a high-carb diet has health risks. A more reasonable approach would be to strike a balance and go from there. 1/3 carbs, 1/3 protein, 1/3 fats. More cheese, less bread. Butter, not margarine. No trans-fats. Closer to the pre-WWII diet as a starting point. What are your goals and objectives, and what balance of macros and activity works best for you?
For example, if reduced body fat is your objective, replace carbs with fat, not protein. Do not be worried about eating fat. Protein in a diet should not exceed 35-45% of total calories otherwise protein poisoning (fat starvation) may result. There is no equivalent fat poisoning. Thus, a diet with 1/3 protein and 2/3 fat is safe, as demonstrated by Inuit populations.
A Scientific Study backs the 1/3, 1/3, 1/3 recipe for slightly over-weight people:
“One-third of every meal should be carbohydrates, one-third protein, and one-third fat. That’s the recipe for keeping inflammatory and other disease-enhancing genes in check,” Johansen explains.