The Center for Science in the Public Interest is petitioning the Food and Drug Administration to tighten requirements for food labels.
The labels multi-grain and whole grain have no legal meaning. By law, only whole wheat bread must be made with 100-percent whole wheat. But any other wheat product can have as much or as little wheat as the manufacturer decides.
Some companies even add coloring to give their products a whole wheat look if they don't contain much whole wheat.
Nutritionists say if the package boasts whole grain, consumers should double check the ingredient list and make sure whole wheat or another whole grain comes first.