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
43
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
A、Tenminuteslate.B、Tenminutesearly.C、Atteno’clock.D、Fiveminutesearly.B细节题。对话一开始,男孩便说Dr.Brown’sclassfinishedtenmi
A)Reduce,reuse,andrecycle.RecyclinghasbecomeapartofAmericanlife.Italsoisanimportantpartofthewaste-processing
A)Reduce,reuse,andrecycle.RecyclinghasbecomeapartofAmericanlife.Italsoisanimportantpartofthewaste-processing
A、Theincreaseinbeachfrontpropertyvalue.B、Anexperimentalengineeringproject.C、TheerosionofcoastalareasD、Howtobuil
A、About116schoolsaroundtheworldnowoffercoursematerialsfreeonlinetothepublic.B、OpenCourseWareonlyoffersmateri
A、Beingachildismuchhappierthanbeinganadult.B、Weshouldenjoywhateachagegivesus.C、Beinganadultshouldtakemore
A、WhyJapaneseshouldworkless.B、ThedifferencebetweenJapaneseandtheWest.C、Worklessandmoreleisure.D、Workmoreandl
A、Afive-dayweek.B、1,899hours.C、2,100hours.D、1,992hours.C细节题。根据原文,Thecountryshouldcutdownfromits2,100hoursavera
Forthispart,youareallowed30minutestowriteanessaycommentingontheremark"MyOpinionsonStudents’WearingFamousBr
随机试题
我国规定,投保人在交费期问身亡者,个人交纳的全部本息退给其()
女,65岁。因阵发性胸闷8年,持续胸痛8小时收入院。入院时血压为150/90mmHg,诊断急性前壁心肌梗死。支持诊断的心电图改变为
男,50岁,心前区剧痛2小时。检查血压120/80mmHg,端坐呼吸,两肺底细湿啰音,心率120次/分,律齐,S1减弱,ECG示V1、V2、V3、V4、V5导联病理性Q波及ST段上抬。紧急处理哪种药物不应该使用
行政沟通原则包括()。
下列对基差的描述正确的有()。
上海证券交易所规定,集合资产管理计划开始投资运作后,应通过会籍办理系统,在每月前5个工作日内,向上海证券交易所提供上月( )。
如图所示,A、B、C、D、E、F将圆六等分。圆内接一个正三角形。已知阴影部分的面积是100平方米,则圆面积为多少平方米?
目前,我国的教育康复主要的开展机构包括( )。
—______doyougotoschooleveryday?—Bybus.
[A]Breakingallconstraints[B]Timelinetoexecution[C]Thepurposeofthedecision[D]Knownunknownsandunknownun
最新回复
(
0
)