首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Many who think they have food allergies(过敏)actually do not. A new report, commissioned by the federal government, finds the fiel
Many who think they have food allergies(过敏)actually do not. A new report, commissioned by the federal government, finds the fiel
admin
2018-10-16
69
问题
Many who think they have food allergies(过敏)actually do not. A new report, commissioned by the federal government, finds the field is full of poorly done studies, misdiagnoses and tests that can give misleading results.
While there is no doubt that people can be allergic to certain foods, the true incidence of food allergies is only about 8 percent for children and less than 5 percent for adults, said Dr. Marc Riedl, an author of the new paper and an allergist and immunologist at the University of California, Los Angeles.
Yet about 30 percent of the population believe they have food allergies. And, Dr. Riedl said, about half the patients coming to his clinic because they had been told they had a food allergy did not really have one. Dr. Riedl does not dismiss the seriousness of some people’s responses to foods. But, he says, "That accounts for a small percentage of what people term ’food allergies.’ " Even people who had food allergies as children may not have them as adults. People often shed allergies, though no one knows why. And sometimes people develop food allergies as adults, again for unknown reasons.
For their report, Dr. Riedl and his colleagues reviewed all the papers they could find on food allergies-more than 12,000 articles. In the end, only 72 met their criteria, which included having sufficient data for analysis and using more rigorous tests for allergic responses.
"Everyone has a different definition" of a food allergy, said Dr. Jennifer J. Schneider Chafen, the lead author of the new report. People who receive a diagnosis after one of the two tests most often used— piercing the skin and injecting a tiny amount of the suspect food and looking in blood for IgE antibodies(抗体), the type associated with allergies—have less than a 50 percent chance of actually having a food allergy, the investigators found.
One way to see such a reaction is with what is called a food challenge, giving people a suspect food disguised so they do not know if they are eating it or a placebo(安慰剂)food. If the disguised food causes a reaction, the person has an allergy.
But in practice, most doctors are reluctant to use food challenges, Dr. Riedl said. They believe the test to be time consuming, and worry about asking people to consume a food, like peanuts, that can elicit a frightening response.
The paper, to be published Wednesday in The Journal of the American Medical Association, is part of a large project organized by the National Institute of Allergy and Infectious Diseases to try to impose order on the chaos of food allergy testing. An expert panel will provide guidelines defining food allergies and giving criteria to diagnose and manage patients. They hope to have a final draft by the end of June.
The National Institute of Allergy and Infectious Diseases organized the project in order to ______.
选项
A、regulate the diagnosis of food allergy
B、find the best measures against food allergy
C、determine the size of allergic population
D、research the factors for food allergy
答案
A
解析
该段第1句中的impose order、第2句中的provide guidelines、giving criteria等都表明国家过敏与传染病研究院组织该项目是为了加强对过敏症的诊断准确性的监管。因此,本题应选A。
转载请注明原文地址:https://kaotiyun.com/show/XwH7777K
0
大学英语六级
相关试题推荐
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
A、Itisoftendisplayedoutdoors.B、Itdoesnotalwaysrepresentanobject.C、Itisthree-dimensional.D、Itisdonebyrelativel
A、Itdividesintotwodifferentparts.B、Itkeepsthesamechemicalstructure.C、Itbecomespartofanewchemicalcompound.D、I
Mathematicalabilityandmusicalabilitymaynotseemonthesurfacetobeconnected,butpeoplewhohaveresearchedthesubject
Oldstereotypesdiehard.Pictureavideo-gameplayerandyouwilllikelyimagineateenageboy,byhimself,compulsivelyhammer
Oldstereotypesdiehard.Pictureavideo-gameplayerandyouwilllikelyimagineateenageboy,byhimself,compulsivelyhammer
ItwasmusictomyearstohearthattheGovernment’schiefadviseron【C1】______,SusanJebb,wantsparentsto【C2】______fruitj
A、Trafficaccidents.B、Radiation.C、Traintravel.D、Aircrash.B原文提及“不久前人们认为在太空中会遭遇到严重的威胁,主要有辐射和流星撞击”,故B正确。
随机试题
全球最大的传播媒体是()
A.肝素B.枸橼酸钠C.EDTAK2D.草酸铵E.双草酸盐适用于红细胞沉降率测定的抗凝剂为
A、吸附色谱B、离子交换色谱C、聚酰胺色谱D、正相分配色谱E、凝胶色谱一般分离非极性化合物可用
A.紫外一可见分光光度法B.薄层色谱扫描法C.高效液相色谱法D.气相色谱法E.滴定法药典规定,在青黛中测定靛蓝含量的方法是
在费用优化时,当需要缩短关键工作的持续时间时,其缩短值必须符合下列原则( )。
上市公司的资产重组方式主要有()等类。
(2014年卷一第58题)吴某于2011年4月10日针对某专利提出无效宣告请求。下列哪些情形下专利复审委员会对该无效宣告请求不予受理?
如果研究正常志愿者和语言区受损的患者在Stroop任务上的脑区活动差别,最佳选择的是()
F.ScottFitzgeraldisnottheauthorof
A—AnnualleaveB—SickleaveC—BackgroundscreeningD—BigdataE—ChildlaborF—Contractofservice
最新回复
(
0
)