the nutrients for one serving and an entire package - as some products do already - would help simplify things, Mohr said.
"It's so important to make the information as transparent as you can make it for consumers," she said.
Marion Nestle, a nutrition researcher from New York University, agreed, echoing Mohr's recommendation of a system like Britain's - in which the front of foods are labeled green, yellow or red on basis of their healthfulness.
"If you give somebody a big package of potato chips, they're not going to think there are five servings in it, they're going to think it has 100 calories," she said.
"I would like to see the total number of calories in a package, on a package. I don't think people should have to do the math."