Prevalence of food allergies in older adults: A systematic review and meta-analysis.

Self-reported physician-diagnosed food allergies showed a prevalence of 7% (95% CI 5-8).

Specific IgE (sIgE) sensitization indicated a prevalence of 14% (95% CI 10-18).

Only 1 study reported challenge-confirmed food allergies with a prevalence of 0.5%.

Exploratory comparisons suggest similar combined prevalence estimates across low- and middle-income countries (low- and middle-income countries) (10%) and high-income countries (9%), though the small number of low- and middle-income countries studies and differences in assessment methods preclude firm conclusions. sIgE sensitization to common allergens was 3% for cow's milk and peanut, 2% for egg and 1% for soy.