Sources for U.S. Americans with the allergy / intolerance statics.
Top 8 allergens: U.S. Food and Drug Administration. "Food Alergies: What You Need to Know". https://www.fda.gov/Food/ResourcesForYou/Consumers/ucm079311.htm. Accessed 12 December 2017.
Food Allergy in General: Food Allergy Research and Education. "Food Allergy 101: Facts and Statistics". https://www.foodallergy.org/life-food-allergies/food-allergy-101/facts-and-statistics. Accessed 20 October 2017.
Celiac Disease: Beyond Celiac. "Celiac Disease: Fast Facts". https://www.beyondceliac.org/celiac-disease/facts-and-figures/. Accessed 20 October 2017.
Lactose Intolerance: Physicians Committee for Responsible Medicine. "What is Lactose Intolerance?". http://www.pcrm.org/health/diets/vegdiets/what-is-lactose-intolerance. Accessed 20 October 2017.
Soy Allergy: Food Allergy Research and Education. "Soy Allergy". https://www.foodallergy.org/common-allergens/soy. Accessed 20 October 2017.
Seafood Allergy: Elliot and Roslyn Jaffe Food Allergy Institute, Division of Allergy and Immunology, Department of Pediatrics, Mount Sinai School of Medicine, New York, NY 10029-6574, USA. "Prevalence of seafood allergy in the United States determined by a random telephone survey.". Accessed 20 October 2017.
Peanut Allergy: The Peanut Institute. "Eating Well: Allergy". http://www.peanut-institute.org/eating-well/allergy/quick-facts.asp. Accessed 20 October 2017.
Latex Allergy: American Latex Allergy Association. "Statistics". http://latexallergyresources.org/statistics. Accessed 20 October 2017.