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　　成??(cheng)年??(nian)期??(qi)是??(shi)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的??(de)“黃??(huang)金??(jin)時(shí)??(shi)代秘(dai)”??，功??(gong)能??(neng)趨??(qu)于??(yu)穩(wěn)??(wen)定??(ding)??，但??(dan)不??(bu)良??(liang)生??(sheng)活??(huo)習(xí)??(xi)慣??(guan)可??(ke)能??(neng)引??(yin)發(fā)??(fa)“隱??(yin)形??(xing)危??(wei)機(jī)??(ji)”?。??這??(zhe)一??(yi)時(shí)??(shi)期??(qi)的??(de)免?(mian)疫??(yi)特??(te)點(diǎn)??(dian)主??(zhu)要??(yao)是??(shi)兩??(liang)個(gè)??(ge)方??(fang)面??(mian)??，一??(yi)是??(shi)胸??(xiong)腺??(xian)萎??(wei)縮??(suo)??，新??(xin)生??(sheng)T細(xì)??(xi)胞??(bao)減??(jian)少??(shao)??，依??(yi)賴??(lai)記??(ji)憶??(yi)T細(xì)??(xi)胞??(bao)應(yīng)??(ying)對(duì)??(dui)病??(bing)原??(yuan)體??(ti)；二??(er)是??(shi)慢??(man)性??(xing)炎??(yan)癥??(zheng)??，吸??(xi)煙??(yan)、肥??(fei)胖??(pang)、壓??(ya)力??(li)等??(deng)導(dǎo)??(dao)致??(zhi)低??(di)度??(du)炎??(yan)癥??(zheng)??，增??(zeng)加??(jia)糖?(tang)尿??(niao)病??(bing)、心??(xin)血??(xue)管??(guan)疾??(ji)病??(bing)風(fēng)??(feng)險(xiǎn)??(xian)??！　∶??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的??(de)核?(he)心?(xin)使??(shi)命??(ming)不??(bu)是??(shi)“消??(xiao)滅??(mie)一??(yi)切??(qie)”??，而?(er)是??(shi)識(shí)??(shi)別??(bie)敵??(di)我??(wo)、清?(qing)除??(chu)威??(wei)脅?(xie)??。??。