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Front-of-pack labeling systems may remain varied
date:Jun 30, 2012
ol from Wal-Mart Stores, Inc., Bentonville, Ark., is one example. Finally, a nutrient density system involves mathematical equations to determine a score or ranking for a products health rating. Guiding Stars and NuVal are examples.
Proving how effective front-of-pack labels are is difficult because retail chains often do not share sales data, Ms. Maggi said. A study appearing in the February 2010 issue of The American Journal of Clinical Nutrition examined Guiding Stars, she said, and a study a

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