Healthy humans have two types of immune systems that protect the body from invading disease-causing pathogens. Innate Immunity is the first barrier of protection. It is similar to a force field. Its main purpose is to destroy any pathogen that tries to enter the cells of the epidermis (skin cells) and mucosa (mucus-secreting cells found in the gastrointestinal tract, respiratory tract, urogenital tract and eyes. If the first defense doesn't work, the adaptive immunity steps in to eradicate the invading microbe. However, sometimes the body reacts to harmless agents as if they were pathogens. Every day, more and more adults develop allergies to things in their environment like pollen , grass, mold and pet dander1 can lead to mild or harmful reactions. Other allergens can cause tingling in the throat and mouth and in many cases serious reactions leading to death 2 In the last two decades, 75 to 100% of cases of asthma and 150% of atopy reported.4 17.7 million adults and 7.1 million were diagnosed with allergies and hay fever.5 There is no known reason why people developed hypersensitivity to certain agents, however many adults develop allergies later in life. Statistically, children are the ones who develop allergies the most. About 3.9% of children suffer from allergies, while 2% of adults suffer from them. 6 So why are adults becoming increasingly vulnerable to this disorder? One possible reason is that everyday foods and household products make people sick. Could it be that constant exposure to known hypoallergenic agents is causing the development of allergic reactions in adults who have never experienced any allergic reactions in their lives? To understand why the sudden allergy disorder occurs...... half of the article .. ....alian adults: a multicenter study. Int Arch Allergy Immunol. 2009;150(3):271-7.4 . Isolauri E, Huurre A, Salminen S, Impivaara O. The allergy epidemic extends beyond recent decades. Clin Exp Allergy. 2004 07;34(7):1007-10.5. CDC [Internet]. Allergies and hay fever. Atlanta, Georgia: Centers for Disease Control and Prevention. Available from: http://www.cdc.gov/nchs/fastats/allergies.htm [Accessed date 2011, November 18]6. CDC [Internet]. “Food Allergies – DASH/Healthy Youth.” Atlanta, Georgia:: Centers for Disease Control and Prevention. April 26, 2011. http://www.cdc.gov/HealthyYouth/foodallergies [Accessed date 2011, November 18]7. Laurière M, Pecquet C, Bouchez-Mahiout I, Snégaroff J, Bayrou O, Raison-Peyron N, et al. Hydrolyzed wheat proteins present in cosmetics can induce immediate hypersensitivity. Contact dermatitis. 2006 05;54(5):283-9.