from British Journal of Nutrition
All sources of carbohydrates are not created equal. That was demonstrated by Penn State researchers in the British Journal of Nutrition. They assigned study participants to eat a refined grain side dish, such as pasta, rice or white bread, or a steamed or baked potato with a main meal for four weeks. Then, after a two-week break, the participants ate the opposite side dish for another four weeks. When eating potatoes instead of refined grains, participants scored higher on Dietary Guidelines for Americans. Researchers say a healthy diet with one daily serving of non-fried potatoes did not affect glycemic indices and helped participants toward a healthy diet compared to refined carbohydrates.