▁character ized ▁by ▁di ab etes ▁and ▁sensor ine ural ▁hearing ▁loss . ▁ ▁Sign s ▁and ▁sympt oms ▁As ▁suggested ▁by ▁the ▁name , ▁patients ▁with ▁M ID D ▁are ▁subject ▁to ▁sensor ine ural ▁hearing ▁loss . ▁This ▁begins ▁with ▁a ▁reduction ▁in ▁the ▁per ception ▁of ▁frequencies ▁above ▁approximately ▁ 5 ▁k Hz ▁which ▁progress ively ▁decl ines , ▁over ▁the ▁years , ▁to ▁severe ▁hearing ▁loss ▁at ▁all ▁frequencies . ▁The ▁di ab etes ▁that ▁accompan ies ▁the ▁hearing ▁loss ▁can ▁be ▁similar ▁to ▁Type ▁ 1 ▁di ab etes ▁or ▁Type ▁ 2 ▁di ab etes ; ▁however , ▁Type ▁ 1 - like ▁di ab etes ▁is ▁the ▁more ▁common ▁form ▁of ▁the ▁two . ▁M ID D ▁has ▁also ▁been ▁associated ▁with ▁a ▁number ▁of ▁other ▁issues ▁including ▁kid ney ▁d ys function , ▁g astro int est inal ▁problems , ▁and ▁card iom y op ath y . ▁ ▁Gen et ics ▁ ▁Pen et rance ▁and ▁age ▁of ▁on set ▁ ▁M ID D ▁represents ▁ 1 % ▁of ▁people ▁who ▁have ▁di ab etes . ▁Over ▁ 8 5 % ▁of ▁people ▁that ▁carry ▁the ▁mut ation ▁in ▁mit och ond rial ▁DNA ▁at ▁position ▁ 3 2 4 3 ▁present ▁sympt oms ▁of ▁di ab etes . ▁The ▁average ▁age ▁at ▁which ▁people ▁who ▁have ▁M ID D ▁are ▁typically ▁diagn osed ▁is ▁ 3 7 ▁years ▁old ▁but ▁has ▁been ▁seen ▁to ▁range ▁anywhere ▁between ▁ 1 1 ▁years ▁to ▁