gen . ▁ ▁The ories ▁for ▁the ▁path oph ys i ology ▁of ▁E IA ▁include ▁increased ▁g astro int est inal ▁per me ability , ▁increased ▁t issue ▁en zym e ▁activity , ▁and ▁blood ▁flow ▁red ist ribution . ▁ ▁Gast ro int est inal ▁per me ability ▁ ▁Ex erc ise ▁is ▁known ▁to ▁increase ▁absor ption ▁from ▁the ▁g astro int est inal ▁tract . ▁It ▁is ▁the or ised ▁that ▁increased ▁or ▁alter ed ▁g astro int est inal ▁per me ability ▁enh ances ▁contact ▁of ▁all erg ens ▁with ▁the ▁gut - associ ated ▁imm une ▁system . ▁In ▁some ▁F DE IA ▁patients , ▁the ▁appearance ▁and / or ▁sever ity ▁of ▁sympt oms ▁depends ▁on ▁the ▁amount ▁of ▁the ▁patient ' s ▁trigger ▁food ▁ing ested . ▁An ▁increase ▁in ▁gut ▁per me ability ▁may ▁also ▁increase ▁the ▁risk ▁of ▁absor ption ▁of ▁' partial ly ▁dig ested ▁aller gen ic ▁prote ins '. ▁Support ing ▁research ▁for ▁this ▁theory ▁includes ▁a ▁study ▁by ▁M ats uo ▁et ▁al . ▁( 2 0 0 5 ), ▁where ▁whe at - dependent ▁E IA ▁suffer ers ▁were ▁found ▁to ▁have ▁om ega - 5 - g li ad ins ▁in ▁their ▁sera ▁following ▁exercise ▁and ▁consumption ▁of ▁whe at , ▁but ▁not ▁in ▁patients ▁that ▁ing ested ▁whe at ▁only . ▁ ▁In cre ased ▁t issue ▁en zym atic ▁activity ▁ ▁Another ▁theory ▁is ▁that ▁exercise ▁and ▁asp ir in ▁could ▁activ ate ▁t issue