Heart Smart meal plan diet menu plans emphasize two nutrients that have the greatest impact on cholesterol and heart disease – fiber and fat. Your daily menu plans include at least 25 to 35 grams of fiber and emphasize whole grains like whole wheat bread and pasta, brown rice and oats. In addition, all of the added fats used in the Heart Smart plans are either monounsaturated or polyunsaturated, the “good fats” that help lower bad cholesterol.