The overall nutritional quality index was a nutritional rating system developed at the Yale-Griffin Prevention Research Center in 2008. A proprietary algorithm assigned foods a score between 1 and 100 intended to reflect the overall nutritional value a portion of the given food provided.[1] The system was marketed commercially as NuVal by NuVal, LLC, a joint venture with Topco Associates.[2] Over 1600 grocery stores in the United States placed NuVal scores on product shelf tags next to the price.[3][2] The commercial product was discontinued in 2017 amid accusations of conflicts of interest and criticism of NuVal LLC's refusal to publish the algorithm.[4] Either of which may have contributed to some inconsistencies in scoring where certain processed foods scored higher than, for instance, canned fruits and vegetables.[4]
^Saner, Emine (21 October 2008). "Think you know what's good for you to eat? asks Emine Saner". the Guardian. Archived from the original on 2018-09-18. Retrieved 2019-10-27.
^ ab"NuVal Nutritional Scoring System Will Debut in Major U.S. Chains This September". New Hope Network. Braintree, MA: Informa Markets. PRNewswire via COMTEX. 11 July 2008. Archived from the original on 2019-09-22. Retrieved 2019-10-27.
^Watson, Elaine (13 November 2017). "Goodbye NuVal… and good riddance?". FoodNavigator-USA. William Reed Media Inc. Archived from the original on 2020-08-11. Retrieved 2019-10-27.
^ abXiong, Amy (2017-11-03). "Yale researcher's ratings service discontinued". Yale Daily News. Archived from the original on 2019-10-27. Retrieved 2019-10-27.
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