TSLP and Alzheimer disease: In contrast, dietary fish oil or fermented fish oil (both are enriched with long-chain unsaturated fatty acids EPA (eicosapentaenoic acid) and DHA (docosahexaenoic)) lowers TSLP expression in mouse ear tissue with AD [19], and a natural flavonoid quercetin lowers TSLP levels in an in vitro AD model using human keratinocytes [20].