Study questions accuracy of food labels

January 6, 2010 A new study in the Journal of the American Diabetic Association says prepared foods may contain an average 8 percent more calories than their package labels claim. And the numbers may be even greater for restaurant meals

The research from Tufts University finds restaurant meals may contain a whopping 18 percent more.

Nutritionists say, over the course of a year, those 8 and 18 percent more calories may be enough to sabotage a consumers dieting goals.