Information is beginning to come in on the effect of providing nutrition information on menus in chain restaurants. The result is consumers make lower calorie selections. Here are some of the studies and commentaries:
The Stanford Graduate School of Business study, Calorie Posting in Chain Restaurants, looked at the effect of mandatory calorie posting on Starbucks stores in New York City. Customers averaged six percent less calories per transaction.
An Atlantic article, Calorie Labeling Works, II, which also references New York City health department's Preliminary Data from New York City , and a Yale study, Evaluating the Impact of Menu Labeling on Food Choices.
Nutrition Menu Labeling May Lead to Lower-Calorie Restaurant Meal Choices for Children in Pediatrics, which found that when nutritional information is available on menus, on average pick lower-calorie foods for their children. In BusinessWeek, Listing Calories on Fast-Food Menus Cuts Kids' Intake, quotes Dr. Pooja Tandon: "When parents are provided with calorie information they chose about 100 calories less [per meal] for their 3- to 6-year-old child compared to parents who didn't have that information."
The Wall Street Journal, Restaurants Begin to Count Calories, notes, "Restaurants from Applebee's to Starbucks are pushing new low-calorie menu items in an effort to attract customers who say they want healthier options. Chain restaurants, traditionally known for peddling fatty food and sugary drinks, hope that offering healthier fare will give them a competitive advantage, especially with the prospect of a federal nutrition labeling law looming."