How does the definition of allergy explain why some individuals are allergic to multiple types of pollen?

AAAAI experts explain an allergic reaction occurs when the immune system overreacts to a harmless substance called an allergen. Allergies are your immune system's overreaction to foreign substances. When you touch, inhale or eat something you're allergic to, your body thinks it's harmful ... There are no laws or regulations requiring those advisory warnings and no standards that define what they mean. If you have questions about what foods are safe ... Jan 30, 2020 ... Food allergies. A more severe problem happens when someone develops a true allergic reaction, an overblown response by the body's immune system ... noun plural allergies. Informal. a strong dislike or aversion, as toward a person or activity: He has an allergy to hard work. Jan 15, 2025 ... ... definition, it was determined that the exemption should include ... allergen in the cheese seasoning and any other allergens present. An allergy is where your body reacts to something that's normally harmless like pollen, dust or animal fur. The symptoms can be mild, but for some people they ... FOOD ALLERGY SAFETY. (a) IN GENERAL.—Section 201(qq)(1) of the Federal Food ... modification of the definition of ''major food allergen'' included in ... A misguided reaction to foreign substances by the immune system, the body system of defense against foreign invaders, particularly pathogens. But without a regulatory definition in place, there can be no assurance that foods labeled as "dairy free" are in fact free from any milk proteins. Should milk- ...