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
People who have a lot of stress are more likely to become sick.
People who have a lot of stress are more likely to become sick.
admin
2009-06-24
82
问题
People who have a lot of stress are more likely to become sick.
Scientists are now studying a new field of research called psychoimmunology. It is based on the idea that people who are depressed or have a lot of stress are more likely to become sick. Researchers have recently found a connection between diseases and stressful situations. To test this theory, psychoimmunologists are trying to find a link between the brain and the immune system.
The immune system in our bodies fights the bacteria and viruses which cause disease. Therefore, whether or not we are likely to get various diseases depends on how well our immune system works. Biologists used to think that the immune system was a separate, independent part of our bodies. Recently, however, they have found that our brain can affect our immune system. This discovery indicates that there may be a connection between emotional factors, such as stress or depression, and illness.
Although many doctors in the past suspected a connection between emotional factors and disease, they had no proof. Scientists have only recently discovered how the brain and the immune system function. Before this, no one could see a link between them. As a result, medical science never seriously considered the idea that psychological factors could cause disease.
Several recent studies showed a connection between stress and illness. For example, researchers went to an American military school to study the students. By studying the cadets’ blood, they found that many were infected with a virus which causes mononucleosis, a common glandular disease. Of the infected students, only 5 percent actually became ill. The sick cadets had a lot of academic pressure and wanted to achieve, but they were not very good students. In a similar study, researchers studied a group of student nurses. They focused on cold sores, which are also caused by a common, virus. Many student nurses carried the virus in their blood, but few of these infected nurses actually developed cold sores. The nurses who did develop cold sores were the ones who described themselves as generally unhappy people.
In addition to these results, which support their theory, researchers are also looking for proof that stress can damage the immune system. Researchers studied recently bereaved people, i.e., people whose loved ones have just died, because they are more likely to become ill or die. By examining the immune system of recently bereaved people, the researchers made an important discovery. They examined some white blood cells, called lymphocytes, which are an important part of the immune system. They were not functioning properly. The fact that they were not working correctly indicates that severe psychological stress, such as a loved one’s death, may damage an important part of our immune system, namely, the lymphocytes.
There is still no positive proof of a connection between the immune system and psychological factors. Researchers also say that the results of the studies on bereaved people could have a different explanation. For example, bereaved people often sleep and eat less than normal, or may drink alcohol or take medication. These factors can also affect the immune system. More research is needed to clearly establish the connection between the immune system and psychological factors.
选项
A、Right
B、Wrong
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/GFHd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
AttentiontotheDetails1.Attentiontodetailissomethingeveryonecanandshoulddo—especiallyinatightjobmarket.B
FordAbandonsElectricVehiclesTheFordmotorcompany’sabandonmentofelectriccarseffectivelysignalstheendoftheroa
FordAbandonsElectricVehiclesTheFordmotorcompany’sabandonmentofelectriccarseffectivelysignalstheendoftheroa
DatingfromaroundA.D.1000,thelargestmoundsurvivingfromtheMississippianculturewasonehundredfeethighandhadaba
DVDforRent1Apay-for-playsystemforvideoDVD(digitalversatiledisc)willemergebysummerasanalternative,andpossib
Themainpurposeofthispassageisto______.Theauthor’sresponsetothosewhourgethedeathpenaltyforalldegreesofmur
Hecollapsedfollowingavigorousexercisesessionathishome.
Hecollapsedfollowingavigorousexercisesessionathishome.
Thefirstparagraphpointsoutthatoneoftheadvantagesofafamilywithbothparentsis______.Whichofthefollowingstate
随机试题
在PowerPoint2003中,幻灯片放映时能够切换到下一张幻灯片的操作有________。
6岁儿童,B超发现甲状腺右侧1.2cm实性结节,无包膜,颈周未探及肿大淋巴结,治疗为
腹泻超过多长时间为慢性腹泻
脑血流和颅内压调节的特点不包括
根据《关于制止电解铝行业违规建设盲目投资的若干意见》,属于以下( )情况的矿点必须依法关闭。
民航规定,在飞机离站前24小时之前申请退票,所收取的手续费为票价的()。
19世纪70年代以后,王韬、薛福成、马建忠、郑观应等人不仅主张学习西方的科学技术,同时也要求吸纳西方的政治、经济学说。他们的共同特点是()
HowtoapproachReadingTestPartFive•ThispartoftheReadingTesttestsyourgrammar:•Readthewholetextquicklytofind
WhatistheproblemofEngland’semergencyhealthcareservices?
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendpeopletocollegesto【B1】______graduatingstudentsw
最新回复
(
0
)