Foods perceived by adults as causing adverse reactions

Area of Science:

• Food science
• Clinical immunology
• Dietetics

Background:

• Distinguishing between confirmed food allergies and subjective food-related complaints is crucial for accurate diagnosis and management.
• Patients presenting with non-specific symptoms often report a wide range of offending foods, complicating clinical assessment.

Purpose of the Study:

• To identify differences in reported offending foods between patients with confirmed food allergies and those with unconfirmed adverse food reactions.
• To analyze symptom patterns and demographic factors associated with confirmed versus unconfirmed food reactions.

Main Methods:

• Comprehensive clinical history, skin testing, and double-blind food challenges were used for diagnosis.
• Patients were categorized into confirmed (n=22) and unconfirmed (n=23) adverse food reaction groups.

Main Results:

• Confirmed reactions were linked to younger age (34.8 years) and typical allergens (tree nuts, legumes, crustaceans).
• Unconfirmed reactions involved older adults (41.5 years), delayed-onset non-specific symptoms, and commonly reported non-traditional food triggers.
• Individuals with unconfirmed reactions reported more than five times the number of foods causing adult-onset symptoms compared to those with confirmed reactions.

Conclusions:

• Confirmed food allergies align with immunoglobulin E-mediated hypersensitivity, while unconfirmed reactions suggest external influences like media and clinical ecology.
• Patients with unconfirmed adverse food reactions may adopt non-traditional healthcare practices and questionable dietary habits.
• Managing individuals with non-specific adverse food reactions presents significant challenges for dietitians.