Cross-reactivity

Definition

Cross-reactivity refers to the interaction between different allergens that are structurally similar, causing similar allergic reactions in people who are sensitive to them.

Scientific / Technical Definition

Cross-reactivity occurs when the immune system recognizes molecules in different species that share similar epitopes or protein structures, leading to an allergic reaction because the immune system cannot distinguish between the different allergens.

Benefits

Examples

• People allergic to birch pollen may also react to apples and hazelnuts due to cross-reactivity.
• Those allergic to latex might react to foods like bananas or avocados.

Additional Information

• effects: Cross-reactivity can lead to unexpected allergic reactions to foods or substances that are related to a known allergen.

Related Terms

• Allergen
• Hypersensitivity
• Cross-contamination
• GMO Foods
• Non-GMO Foods

References

• Cross-reactivity between pollens and food allergens
• Understanding Cross-reactivity in the Context of Food Allergies