A requirement tucked into the nation's massive health care bill will make calorie counts impossible for thousands of restaurants to hide and difficult for consumers to ignore. More than 200,000 fast food and other chain restaurants will have to include calorie counts on menus, menu boards and even drive-throughs.

The new law, which applies to any restaurant with 20 or more locations, directs the Food and Drug Administration to create a new national standard for menu labeling, superseding a growing number of state and city laws. President Barack Obama was expected to sign the health care legislation Tuesday.