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Alzheimerdisease.docx

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Alzheimer'sdisease Alzheimer'sdisease(AD),accountsfor60%to70%ofcasesofHYPERLINK"https://en.wikipedia.org/wiki/Dementia"\o"Dementia"dementia.（痴呆症）HYPERLINK"https://en.wikipedia.org/wiki/Alzheimer%27s_disease"\l"cite_note-BMJ2009-1"[1]HYPERLINK"https://en.wikipedia.org/wiki/Alzheimer%27s_disease"\l"cite_note-WHO2014-2"[2]ItisachronicHYPERLINK"https://en.wikipedia.org/wiki/Neurodegeneration"\o"Neurodegeneration"neurodegenerativedisease（慢性神经退化性疾病）thatusuallystartsslowlyandgetsworseovertime.Themostcommonearlysymptomisdifficultyinrememberingrecentevents(HYPERLINK"https://en.wikipedia.org/wiki/Short-term_memory"\o"Short-termmemory"short-termmemoryloss)Asthediseaseadvances,symptomscanincludeHYPERLINK"https://en.wikipedia.org/wiki/Primary_progressive_aphasia"\o"Primaryprogressiveaphasia"problemswithlanguage,HYPERLINK"https://en.wikipedia.org/wiki/Disorientation"\o"Disorientation"disorientation（识别人，时间，地点的能力）(includingeasilygettinglost),HYPERLINK"https://en.wikipedia.org/wiki/Mood_swing"\o"Moodswing"moodswings,（情绪不稳）lossofHYPERLINK"https://en.wikipedia.org/wiki/Motivation"\o"Motivation"motivation,notmanagingHYPERLINK"https://en.wikipedia.org/wiki/Activities_of_daily_living"\o"Activitiesofdailyliving"selfcare,andHYPERLINK"https://en.wikipedia.org/wiki/Challenging_behaviour"\o"Challengingbehaviour"behaviouralissues.HYPERLINK"https://en.wikipedia.org/wiki/Alzheimer%27s_disease"\l"cite_note-BMJ2009-1"[1]HYPERLINK"https://en.wikipedia.org/wiki/Alzheimer%27s_disease"\l"cite_note-WHO2014-2"[2]Asaperson'sconditiondeclines,theyoftenwithdrawfromfamilyandsociety.HYPERLINK"https://en.wikipedia.org/wiki/Alzheimer%27s_disease"\l"cite_note-BMJ2009-1"[1] ThecauseofAlzheimer'sdiseaseispoorlyunderstood.HYPERLINK"https://en.wikipedia.org/wiki/Alzheimer%27s_disease"\l"cite_note-BMJ2009-1"[1]About70%oftheriskisbelievedtobeHYPERLINK"https://en.wikipedia.org/wiki/Heredity"\o"Heredity"geneticwithmanyHYPERLINK"https://en.wikipedia.org/wiki/Gene"\o"Gen