The new requirements will force chain restaurants with 20 or more locations, along with bakeries, grocery stores, convenience stores and coffee chains, to clearly post the amount of calories in each item on menus, both in restaurants and drive-through lanes. The new rules will also apply to vending machines.
The calorie counts, will apply to an estimated 280,000 establishments. Required as part of health overhaul legislation signed into law last year, they are designed to give restaurant diners information that has long been available on packaged goods cooked at home. The FDA estimates that a third of calories are consumed by eating out.
"We've got a huge obesity problem in this country and its due in part to excess calorie consumption outside the home," says Mike Taylor, FDA deputy commissioner for foods. "Consumers generally when you ask them say they would prefer to have that information."
But don't expect calorie shock when ordering at the movie theater, where a tub of popcorn can contain well north of a thousand calories - movie theaters are exempt, along with airplanes, bowling alleys and other businesses whose primary business is not to sell food, according to the FDA.
Alcohol will also be exempted, according to the agency. Margo Wootan, director of nutrition policy at the advocacy group Center for Science in the Public Interest, says that could be misleading to consumers.
"I think it's going to be confusing if customers see the calories for soft drinks and juice labeled on the menu but not other drinks such as beer and wine," she said. "It will make it seem like they are better choices."
Still, Wootan says the guidelines are a positive step.
"You won't have to get out of line and go back to some poster by the bathroom and look at some item in a tiny font size," she says. "It will be right there on the menu where you are getting your other information about what to order."