As a dietitian I had hoped so - the whole purpose of a restaurant nutrition information is to help you make better food choices but...Duke-National University of Singapore (NUS) Graduate Medical School researchers compared the food-purchasing behavior at restaurants within King County, Washington (Seattle) that had mandatory nutrition information posted to those outside of King County, which did not add nutritional labels.
After 13 months, they found no change in the average number of calories per transaction at the restaurants in King County relative to the restaurants outside of King County. It appears that the customer had their mind made-up before they even entered the restaurant and they were not influenced by the on-site nutrition information.
Source:http://www.ajpm-online.net/article/S0749-3797(10)00612-4/abstract
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