首页
登录
职称英语
Many who think they have food allergies(过敏)actually do not. A new report, co
Many who think they have food allergies(过敏)actually do not. A new report, co
游客
2023-08-17
19
管理
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. [br] What is mentioned as a disadvantage of food challenge?
选项
A、People are unaware of what they are eating.
B、People may be given frightening food to eat.
C、The food may cause life-threatening allergy.
D、It takes much time to get the food prepared.
答案
C
解析
该句的frightening response表明有些食物可能会产生“可怕的过敏反应”,而这种“可怕的过敏反应”应该是指会危及病人健康甚至生命的反应(因为连医生都不愿意尝试)。由此可见,本题应选C。
转载请注明原文地址:https://tihaiku.com/zcyy/2933634.html
相关试题推荐
[originaltext]M:Hi,Mary.Doyouwanttostartwritingalabreportafterwef
Atattoomaygiveparentsofchildrenwithfoodallergiessomepeaceofmind
Atattoomaygiveparentsofchildrenwithfoodallergiessomepeaceofmind
Atattoomaygiveparentsofchildrenwithfoodallergiessomepeaceofmind
Atattoomaygiveparentsofchildrenwithfoodallergiessomepeaceofmind
Atattoomaygiveparentsofchildrenwithfoodallergiessomepeaceofmind
Atattoomaygiveparentsofchildrenwithfoodallergiessomepeaceofmind
[originaltext]M:(8)Jean,wereyouabletogetthatreportalltypedup?W:(8)
[originaltext]M:(8)Jean,wereyouabletogetthatreportalltypedup?W:(8)
[originaltext]The2010GlobalHungerIndexreportwasreleasedtodaybythe
随机试题
胎儿大脑发育的关键时期是A.出生后6个月 B.妊娠最后6个月 C.出生后8个
手指头感染已形成脓肿时,治疗原则为:A.冷敷 B.热敷 C.切开引流 D.
下列各项中,属于创新活动的有( )。A.应用研究 B.产品创新 C.工艺创
28岁,G2P0,孕31周,从28周开始反复阴道流血,共4次,出血量少于月经量,
读右图。 获得此云图所用的地理信息技术是()查看材料A.GIS B.
请回答血海、足三里的定位、归经及操作。(10分)
共用题干 HealthInsurance(保险)MostAmericans
在期权存续期内,红利支付导致标的资产价格下降,但对看涨期权的价值没有影响。(
A.禁止用试验性药 B.选用对胎儿危害较小的药物 C.用药必须有明确的指征和
采用定额单价法编制施工图预算的基本步骤有:①套用定额单价,计算人、料、机费用;②
最新回复
(
0
)