Objective:
To understand the different sodium menu labeling approaches that have been considered by state and local policy-makers in the U.S., and to summarize the evidence on the relationship between sodium menu labeling and sodium content of menu items offered by restaurants or purchased by consumers.
Design:
Proposed and enacted sodium menu labeling laws at the state and local levels were reviewed using legal databases and an online search, and a narrative review of peer-reviewed literature was conducted on the relationship between sodium menu labeling and sodium content of menu items offered by restaurants or purchased by consumers.
Setting:
Local and state jurisdictions in the U.S.
Results:
Between 2000 and 2020, 38 laws – 11 at the local level and 27 at the state level – were proposed to require sodium labeling of restaurant menu items. By 2020, eight laws were enacted requiring chain restaurants to label the sodium content of menu items. Five studies were identified that evaluated the impact of sodium menu labeling on sodium content of menu items offered by restaurants or purchased by consumers in the U.S. The studies had mixed results: two studies showed a statistically significant association between sodium menu labeling and reduced menu item sodium content; three showed no effects.
Conclusion:
Data suggest that sodium menu labeling may reduce sodium in restaurant menu items, but further rigorous research evaluating sodium menu labeling effects’ on menu item sodium content, as well as on the sodium content in menu items purchased by consumers, is needed.