DIANE SAWYER (ABC NEWS)(OC): It is one of the hottest trends at the supermarket. The surge of products from cereals to snacks to pastas, with labels boasting they are whole grain to convince you, they are a smart and healthy choice. But are they really all that different? Can you trust what's on the label? The Center for Science in the Public Interest has been investigating and tomorrow, they'll go straight to the FDA with these findings. Here's ABC's Elisabeth Leamy.
ELISABETH LEAMY (ABC NEWS)(VO): Multi grain, whole grain, whole wheat. Tomorrow, the Center for Science in the Public Interest will demand that the FDA define those terms, because right now, they have no legal meaning.
ELISABETH LEAMY (ABC NEWS)(OC): That's right. By law, whole wheat bread must be made with 100% whole wheat flour. But any other wheat product could be made with this much white flour and this little wheat and still be labeled whole wheat.
ELISABETH LEAMY (ABC NEWS)(VO): The same goes for whole grain. Take this Old London melba toast.
MICHAEL JACOBSON (EXEC DIR CENTER FOR SCIENCE IN THE PUBLIC INTEREST): There's actually twice as much white flour as whole wheat flour in this product.
ELISABETH LEAMY (ABC NEWS)(VO): These Eggo waffles say "made with whole grain" but contain more white flour than whole wheat. And Jacobson says you can't tell by the beige color either. Consider these Lance crackers.
MICHAEL JACOBSON: They add caramel coloring.
ELISABETH LEAMY (ABC NEWS)(VO): Multigrain? Also undefined.
MICHAEL JACOBSON: The only thing it means is that it has more than one grain. It doesn't mean that any of them are healthful.
ELISABETH LEAMY (ABC NEWS)(VO): Some products brag that they have at least eight grams of whole grain per saving, but serving sizes vary. So some advocates say that can be misleading.
MICHAEL JACOBSON: This is about the amount in a serving of pasta. So to have eight grams, is just this little tiny amount. It's about 1/7 whole grain.
ELISABETH LEAMY (ABC NEWS)(VO): The FDA has been promising to define whole grain since 1993, but when we contacted the companies, some said they followed the existing FDA guidelines, such as they are. Others said they continue to look for opportunities to add whole grain. So, how can you choose wisely? Nutritionists say if the package boasts whole grain, double check the ingredient list and make sure whole wheat or another whole grain comes first. Because even if you see the term whole grain, you still have to read the whole label. Elisabeth Leamy, ABC News, Washington.