Final answer:
Sulfites, a type of food preservative used in the wine industry, have been linked to severe allergic reactions, particularly in asthmatic individuals. Other additives that may cause allergies include artificial colors and flavors, and monosodium glutamate. Food allergies are immune responses to substances mistaken for harmful invaders.
Step-by-step explanation:
A food allergy occurs when the immune system mistakenly identifies a harmless food substance as a threat and mounts a defense against it. This leads to an allergic reaction, which can range from mild symptoms like itching and swelling of the lips and mouth to severe reactions such as anaphylaxis, potentially life-threatening and requiring immediate medical attention.
One food additive that has been linked to severe allergic reactions, especially in individuals with asthma, is sulfites. Sulfites are chemical food preservatives widely used in the wine industry to prevent spoilage and oxidation. They may cause reactions such as bronchoconstriction among those who are sensitive, leading to asthmatic symptoms.
Other potential problematic food additives include artificial sweeteners, artificial colors and flavors, sodium nitrate, BHA and BHT, olestra, caffeine, and monosodium glutamate. While these are generally recognized as safe for the broader population, certain individuals may be at risk for adverse reactions or food allergies triggered by these substances.