Changes in the calorie and nutrient content of purchased fast food meals after calorie menu labeling: A natural experiment.

Using sales data from a large fast food franchise in the southern US that voluntarily implemented calorie labeling in April 2017, we previously found that the calorie content of purchased meals declined by 4% after labeling, with an increasing trend that attenuated this association over the year that followed [ 14 ].

also in 63,971 other papers