An online survey was conducted in which 5,000 adults were asked to assess snack food packages. When the front of the package claimed it was a good source of a particularvitamin or mineral, the participants were less likely to check the nutritional information on the package. They just assumed that a package that had a health claim would in turn be a healthier option. The study was published in The Journal of the Academy of Nutrition and Dietetics. It is important to always read the nutritional facts of any boxed or processed food.The addition of vitamins may also mean the addition of empty calories.