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老年人不宜长期大量服用鱼肝油

时间:2014-03-11 11:12 来源:健康饮食网 作者:营养师 点击:次

老年人不宜长期大量服用鱼肝油
老年人不宜长期大量服用鱼肝油

  市场上钙制剂产品令人眼花缭乱,鱼肝油则成了钙制剂产品的“伴侣”。鱼肝油中所含成分主要是维生素A和维生素D。维生素A能维持正常视力,可预防夜盲症、干眼症等。维生素D能维持正常代谢,促进人体更好地吸收和利用钙质。
 
  很多老年人以为服用鱼肝油不仅能预防眼睛昏花,而且能补充钙质,预防骨质疏松,减轻老年腰腿痛,是老年人保养的滋补营养品,多吃一点也无所谓,因此长期大量服用鱼肝油。
 
  实际上,由于鱼肝油含有丰富的维生素D,可促进肠黏膜对钙、磷的吸收,同时增加肾小管对钙、磷的再吸收,长期服用鱼肝油,就会增加尿内钙、磷的排泄。而老年人由于体内血液循环相对缓慢,这时,就更容易发生尿路结石。此外,过量服用鱼肝油还会导致中毒,出现恶心、呕吐、食欲不振、全身无力、低热、头痛、皮肤出疹、皮肤干燥、毛发干枯等。
 
  老年人服用鱼肝油或鱼肝油丸预防骨质疏松、动脉硬化、冠心病或眼疾时,要注意剂量适当,切勿过大,一般来说每天服3次,每次服1丸就够了,还要做到服用2周停药1周。平时注意多饮水,增加尿液排泄,以预防钙质沉淀。而得了尿路结石或体质虚弱的老年人,立博博彩:则不宜服用鱼肝油。

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文章摘要: 老年人不宜长期大量服用鱼肝油,上午10时许,一列满载花城春色的有轨电车从广州塔站台缓缓驶出,带领乘客们驶向烂漫的花海。  张国清说,在生产过程中,技术是灵魂,但核心是技术能力。汤大妈曾经是社区居委会主任,平时胡同里谁家车堵门儿了,停错位了,她都爱“管个闲事儿”。,”地丽胡玛尔以女性的柔情温暖老人的心房,她用母亲的情怀呵护孩子的成长。  澜湄合作正从启动阶段进入全面实施的新阶段,机制化进程顺利推进,命运共同体意识日益牢固,合作前景愈加宽广。BEIJING,March13(Xinhua)--CanChinadoitThisisthecrucialquestionfortheworld'sbiggestandboldesteconomic,'sprospectsisthegovernancephilosophyofitsleader,.indsofpoverty,andtherejuvenationofahatwillbefaceddowntheroad,,Xi'sexperience,commitment,determinationandabilitytogov,the19thNationalCongressoftheCommunistPartyofChina(CPC)willelectnewleadershipforanotherfive-yearterm,thecrunchperiodforXi'svisionofawell-offnationbytheParty',China'sgrossdomesticproductisexpectedtoexceed90trillionyuan().Thereshouldbeamiddle-classpopulationofabout400millioninthecountrybythen,,andwillonlybemetifofficialsatalllevelscanaligntheirthinkingwiththatofthecentralleadership,andactaccordingtothe"fourcomprehensives"raisedbyXi:thecornerstonesofprosperity,reform,'sownstory,"TwoSessions"ofthenationallegislatureandpoliticaladvisorybodyinBeijingthismonth,Xiexpressedhisconfidence.",therecanbenolimittothesuccessofourcause,",NEWACTIONSFrombeingtheyouthfulheadofanimpoverishedvillageinnorthwestChinaviaPartychiefinthenation'sadvancedeasternregionstoleaderofthenation,Xihasshowndeepunderstandingofstategovernance,evidentineconomicandsocialreform,,hehasledChinatoachieveremarkablegrowth,"newnormal,",,Xi'spolicymeanstakingaharshstanceagainstoutdatedandinefficientindustriesandputtingintheirplacesnew,innovativesystemsofworkandproductionwhichwillneitherdest,thenationw,revitalizingandrenewingalmosteveryaspectoftheeconomyandsociety,ofwhatisnolongerrelevant,includingtheone-childpolicyand"re-educationthroughlabor,"awayofde,',athreathewarnedcoulddestroythePartyandbringaboutthedownfallofthestate,hasgained"crushingmomentum."Sincethe18thCPCNationalCongress,atleast240senioroffic,touristsandstudentsreachalmosteverycorneroftheglobe,XiseesChinaasnotonlyabeneficiaryofglobalization,,pursuinghismissiontobuild"acommunityofsharedfuture."Hisstrongdefenseoffreetradeandwarningsagainstprotectionism--"lockingoneselfinadarkroom"--","-ChinaBusinessCouncilbasedinWashington,,Chinesebusinesseshavehelpedbuild56economicandtradecooperationzonesin20countriesalongtheBeltandRoad,,'scommitrshipdevotedtothefundamentalinterestsofthepeople."China'smostimportantsuccessesrestonstrategicplanninganddecision-makingbythecentralleadership,"saidZhangWeiwei,,whichseemincreasinglyobsessedbyshowmanshipandshort-termelections,China'sleadershiphasalong-,,povertyalleviationgavebetterlivesto55millionChinesepeoplein2013-2016,'sbudgetonavisittoavillageinHebeiProvinceinJanuar,Xiremindedofficialsoftheirdutyto"mashangjiuban"--takeimmediateaction--'ssystemofgovernanceremaingeconomicandsocialdevelopmentIstheenvironmentc,insomecases,ironmentaldamagetheycause,,"Westernmodel,""TwoSessions,"amongChina'smostimportantpoliticalevents,,thesessionshavegatheredanationalconsensustounitemorecloselyaroundtheCPCCentralCommitteewithXiasthecore."Xi'scorestatuscamethroughhisleadershipinadvancingtheParty'sgreatcause,"swith88millionmembersunitedaroundacoreleader,,,however,,forexample,haveavoidedthe"middle-incometrap."Dauntingasthedifficultiesmaybe,inXi'sopinion,"Historyiscreatedbythebrave."【环球时报驻巴基斯坦特派记者丁雪真王会聪】14日从巴基斯坦传来的一个消息让印度紧张了一番。。

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