Federal agencies should develop a new nutrition rating system with symbols to display on the front of food and beverage packaging that graphically convey calorie counts by serving size and a "point" value showing whether the saturated and trans fats, sodium, and added sugars in the products are below threshold levels, says a new report from the Institute of Medicine. This new system would enable shoppers to quickly recognize and compare the healthfulness of products as they shop, the report says. It should apply to all foods and beverages and replace other symbols currently being used on package fronts.