The incidence of eosinophilic esophagitis (EoE) has been rapidly increasing. EoE affects both children and adults and can present with a variety of symptoms depending on age. Multiple studies have found that EoE is more common in Caucasian men compared with other genders or racial or ethnic groups; however, the basis for that predominance is still unknown. The varied clinical illness presentation and persistence in various ethnic groups begs the question of whether genetic or environmental factors might be contributors behind EoE. This paper will review the literature regarding epidemiology, risk factors, and genetic and ethnic differences in EoE.
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