; (ii) have a prominent design that visually contrasts with existing packaging design; and (iii) be sufficiently large to be easily legible. (3) Principles for implementing regulations In promulgating regulations regarding the summary nutrition information required under subparagraph (1), the Secretary shall take into account published reports by the Health and Medicine Division of the National Academy of Sciences regarding such information, and base regulations on the following principles: (A) Consumers should be able to quickly and easily comprehend the meaning of the symbol system as an indicator of a product’s contribution to a healthy diet without requiring specific or sophisticated nutritional knowledge. (B) The nutrition information should be consistent with the Nutrition Facts Panel and with the recommendations of the Dietary Guidelines for Americans. (C) The information should aim to facilitate consumer selection of healthy product options, including among nutritionally at-risk subpopulations. (D) The Secretary should periodically evaluate the front-of-package information to assess its ability to help facilitate consumer selection of healthy product options and the extent to which manufacturers are offering healthier products as a result of the disclosure. (E) The implementation of the information disclosure should be accompanied by appropriate consumer education and promotion campaigns determined by the Secretary. . (b) Percentage of wheat and grains in grain-Based products Section 403 of the Federal Food, Drug, and Cosmetic Act, as amended, is further amended by adding at the end the following: (aa) Percentage of wheat and grains in grain-Based products If, in the case of food other than a dietary supplement, the principal display panel bears— (1) the terms whole wheat , whole grain , made with whole grain , or multigrain ; (2) a declaration of the whole grain content by weight; (3) the term wheat on a wheat bread, pasta, or similar product that is typically made from wheat