Researchers say that the sensitivity , especially towards certain food items has become a phenomenon that is more dangerous than it was before and it is spreading alarmingly . Came Conference secondary to the American College of Allergy and Asthma and Immunology , and who was recently in Seattle, Washington . Estimated prevalence of food allergy in the United States about 3.7 % of adults and 6% among children . Dr Sami Bahna expert Allergy and Immunology at the University of Louisiana to allergies and asthma on the rise , including dermatitis and hypersensitivity deadly , and unrest gastrointestinal related reels of white blood , and returns the causes of obesity and increasing in the consumption of food and food high sensitivity .