Researchers may have found a possible link between the use of multivitamin supplements and the risk of food allergies and asthma. In a study of 8000 infants involved in a governmental study that followed mothers and their children since 1991, there was "an association between early infant multivitamin intake and asthma among black infants and an association between early infant multivitamin intake and food allergies in formula-fed infants." The study also found an increased risk of food allergies among children given multivitamins at age 3. Researchers found that in animal studies certain vitamins cause cell changes that may increase the odds of an allergic response to certain antigens. If results of this study are further proved, it may prompt changes in recommendations for vitamin supplements in order to reduce the risk of food allergies and asthma. As for the higher incidence of asthma among the black population, researchers point to a possible problem in physician-parent communication.