. ▁The ▁decrease ▁in ▁expos ure ▁to ▁inf ect ious ▁stim uli ▁may ▁result ▁in ▁an ▁im bal ance ▁between ▁the ▁inf ect ious - response ▁(" prote ct ive ") ▁elements ▁and ▁the ▁all erg ic - response ▁(" false ▁alarm ") ▁elements ▁within ▁the ▁imm une ▁system . ▁ ▁Some ▁studies ▁also ▁suggest ▁that ▁the ▁mat ernal ▁di et ▁during ▁pre gn ancy ▁may ▁be ▁a ▁caus al ▁factor ▁in ▁at op ic ▁dise ases ▁( including ▁ast h ma ) ▁in ▁off spring , ▁suggesting ▁that ▁consumption ▁of ▁ant io x id ants , ▁certain ▁lip ids , ▁and / or ▁a ▁Mediter rane an ▁di et ▁may ▁help ▁to ▁prevent ▁at op ic ▁dise ases . ▁ ▁An ▁ep ide mi ological ▁study , ▁" Me as les ▁and ▁At opy , in ▁Guinea - B iss au , ▁published ▁by ▁NC BI ▁defined ▁a ▁ 2 . 8 % ▁higher ▁risk ▁of ▁developing ▁an ▁at op ic ▁aller gy ▁after ▁receiving ▁a ▁Me as les ▁v acc ine , ▁than ▁of ▁those ▁who ▁had ▁Me ast ud y ▁titles ▁ ▁The ▁mult ic enter ▁P AR SI F AL ▁study ▁in ▁ 2 0 0 6 , ▁involving ▁ 6 6 3 0 ▁children ▁age ▁ 5 ▁to ▁ 1 3 ▁in ▁ 5 ▁European ▁countries , ▁suggested ▁that ▁reduced ▁use ▁of ▁ant ib iot ics ▁and ▁ant ip y ret ics ▁is ▁associated ▁with ▁a ▁reduced ▁risk ▁of ▁all erg ic ▁disease ▁in ▁children . ▁ ▁Gen