Coke Zero has a Nutri-Grade of B, but full cream milk is rated C. Is Coke Zero really healthier than milk? --------- Our video may have given the impression that, just because a drink is higher on the Nutri-Grade scale, one should consume it heavily. Grade A indicates that a drink contains the lowest sugar and saturated fat content, as opposed to Grade D which indicates it contains the highest amounts of both compounds. Certain Nutri-Grade C and D drinks may still be required in moderation for t