Allergen

Definition

Allergens are substances that can cause an allergic reaction in some people. They are often found in certain foods and can trigger symptoms like itching, swelling, or breathing difficulties.

Scientific / Technical Definition

Allergens are typically proteins or glycoproteins capable of inducing IgE-mediated hypersensitivity reactions in predisposed individuals. Common food allergens include those found in peanuts, milk, eggs, tree nuts, fish, shellfish, soy, and wheat.

Benefits

• Understanding allergens can help in avoiding allergic reactions.
• Identification of allergens on food labels aids individuals with allergies to make safer food choices.

Examples

• Peanuts
• Shellfish
• Milk
• Eggs
• Wheat

Additional Information

• Known issues: Exposure to allergens in sensitive individuals can cause mild to severe allergic reactions, ranging from hives to anaphylaxis.

Related Terms

• Food allergy

References

• Food Allergens Overview - American College of Allergy, Asthma, and Immunology
• Understanding Food Allergies - Mayo Clinic