【"Sleep-disorderedbreathing"isatermforagroupofconditionsthatcaninterferewithnornlalbreathingwhilepeoplesleep．Theseincludesnoring，mouth-breathingandsleepapnea（窒息）．Sleep-disorderedbreathingcandomorethan】

　　"Sleep-disorderedbreathing"isatermforagroupofconditionsthatcaninterferewithnornlalbreathingwhilepeoplesleep．Theseincludesnoring，mouth-breathingandsleepapnea（窒息）．Sleep-disorderedbreathingcandomorethanjustleavepeoplefeelingtiredthenextday．Itcanalsoaffectpeople'shealth．Inchildrentheeffectscanincludebehavioralandemotionalproblems．

　　Inanewstudy．1edbyKarenBonuckattheEinsteinCollegeofMedicine．researchersaskedparentsabouttheirchildren'sbreathingfromwhentheywerebabiesuptoaboutageseven．Thestudyfindssleep-disorderedbreathingisassociatedwithafiftypercentincreaseinoutcomesincludinghyperactivity（多动症），aggressivenessandproblemsrelatingtootherchildren．

　　Ms．Bonucksaysthemoreseriousthebreathingproblems，themoreseriousthebehavioralissueswerelikelytobe．Otherstudieshave：linkedsleepwithchildren'sbehavior，butthisstudywasextensiveenoughto：rejectotherpossiblecauses．

　　Howwelldoyousleep？Apopularbeliefisthatsleepgetsworsewithage．But．inanothernewstudy，thosewhoreportedthefewestproblemswiththequalityoftheirsleepwerepeopleintheireighties．

　　ResearchersdidatelephonesurveyofAmericanaduhs．MichaelGrandnerattheUniversityofPennsylvaniamedicalschoolsaystheoriginalgoalwastoconfirmthatagingisconnectedwithincreasedsleepproblems．Thesurveydidfindanincreaseduringmiddleage，worseinwomenthanmen．Butexceptforthat，peoplereportedthattheirsleepqualityimprovedastheygotolder．Atleasttheyfeltitdid．

　　Mr．Grandnersays．"EvenifsleepamongolderAmericansisactuallyworsethaninyoungeradults，feelingsaboutitstillimprovewithage．"

　　Inthestudy，healthproblemsanddepressionwerelinkedwithpoorsleep．But，basedonthestudy．Mr．Grandnersaysolderpeoplewhoarenotsickordepressedshouldbereportingbettersleep．"Ifthey'renot．theyneedtotalktotheirdoctor．"hesays．Hesaysheahtlhcareprovidersgenerallydismisssleepcomplaintsfromolderadultsasanormalpartofaging．

　　66．Sleep-disorderedbreathingmakesithardforpeopletohave___whilesleeping．

　　A．mouth-breathing B．snoring C．sleep