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
考研
People who are depressed are literally siek at heart: they have a significantly increased risk for cardiovascular disease, and n
People who are depressed are literally siek at heart: they have a significantly increased risk for cardiovascular disease, and n
admin
2016-08-02
81
问题
People who are depressed are literally siek at heart: they have a significantly increased risk for cardiovascular disease, and no one knows exactly why. Now three new studies have tried to explain this, and they arrive at subtly different conclusions.
The first, led hy Dr. Mary A. Whooley, studied 1,017 patients with coronary artery disease for an average of more than four years. Although the study found an association of depression with heart disease, when researchers statistically corrected for other medical conditions, disease severity and physical inactivity, the association disappeared.
They concluded with a relatively straightforward explanation: depression leads to physical inactivity, and lack of exercise increases the risk for heart disease.
A second study provides a different perspective. It included more than 6,500 healthy men and women with an average age of 51. Researchers tested them for depressive symptoms and followed them for an average of more than seven years.
This study, too, found that hehavioral issues like smoking and inactivity were the strongest factors in the increased risk for heart disease among people who are depressed or anxious, accounting for 65 percent of the difference in risk. But they also found that depressed people had higher rates of hypertension and higher levels of C-reactive protein, and that these two physiological factors together accounted for ahout 19 percent of the increased risk. Mark Harrier was the lead author.
While these two studies suggest that the mechanism by which depression exerts its effect is mostly or entirely through poor health behaviors, a third study found that something else might be even more important.
This paper, whose senior author was Dr. Brenda Penninx, studied 2,088 well-functioning adults ages 70 to 79. It found no difference in physical activity between those who were depressed and those who were not.
But it did find that depressive symptoms were associated with an increase in visceral fat accumulation—the pot belly that is a known risk factor for cardiovascular illness. This suggests that there is a biological mechanism that links depression with physiological changes independent of how much a person exercises.
To further complicate matters, Dr. Penninx suggested that her physically healthy subjects might have a different kind of depression. "There is now quite a lot of evidence that among heart attack patients, the physical symptoms of depression are more prevalent," she said, "which suggests that their depression is different from that seen in an otherwise healthy sample. "
For now, Dr. Hamer offered what might be the last word on the complicated relationship between depression and heart disease.
"It’s really quite difficult to understand," he said.
The second study revealed that poor health behaviors most probably
选项
A、include such unhealthy issues as smoking and inactivity
B、increase the risk for heart disease among depressed people
C、cause evident depressive symptoms among healthy people
D、lead to higher rates of hypertension among anxious people
答案
B
解析
根据第五段中的“This study,too,found that behavioral issues…were the strongest factorsin the increased risk for heart disease among people who are depressed or anxious…”和第七段中的“…the mechanism by which depression exerts its effect is mostly or entirely through poor healthbehaviors…”,B应为答案。
转载请注明原文地址:https://kaotiyun.com/show/eooZ777K
0
考研英语一
相关试题推荐
Whatdoconsumersreallywant?That’saquestionmarketresearcherswouldlovetoanswer.Butsincepeopledon’talwayssaywhat
Organizationsandsocietiesrelyonfinesandrewardstoharnesspeople’sself-interestintheserviceofthecommongood.Thet
Organizationsandsocietiesrelyonfinesandrewardstoharnesspeople’sself-interestintheserviceofthecommongood.Thet
Organizationsandsocietiesrelyonfinesandrewardstoharnesspeople’sself-interestintheserviceofthecommongood.Thet
Ifyou’relikemostpeople,you’rewaytoosmartforadvertising.Youfliprightpastnewspaperadsandneverclickonadsonlin
Ifyou’relikemostpeople,you’rewaytoosmartforadvertising.Youfliprightpastnewspaperadsandneverclickonadsonlin
Marriageis,formanypeople,theirmostimportantrelationship,thesourceofmuchhappiness,and,forsome,evenaddsextraye
Marriageis,formanypeople,theirmostimportantrelationship,thesourceofmuchhappiness,and,forsome,evenaddsextraye
随机试题
设S1表示上半球面x2+y2+z2=R2,z≥0的上侧,设S2表示下半球面x2+y2+z2=R2,z≤0的下侧.若曲面积分I1=zdxdy,I2=zdxdy,则必有()
Hewasfound______onemonthafterhewasborn.
电讯检疫:国际航行船舶的电讯检疫一般是由船舶公司或船舶代理申请,同时符合下列条件:()
国外理财业务的形成与发展时期是()。
下列各项中,导致成本法核算的长期股权投资的账面价值发生增减变动的有()。
A公司(上市公司)是坐落于黑龙江省的国内大型现代化农业企业,公司采用现代农业生产方式,从事特色农产品种植、加工、保鲜、冷藏及销售。公司主要产品为:鲜食粘玉米、玉米果汁、玉米粒、青贮饲料、果肉型葡萄、葡萄酒。A公司资产总额近15亿元人民币,其中存货占公司资产
在选择性旅游中,不可选择部分包括()。
行政复议:指公民、法人或其他组织对行政机关的具体行政行为不服,依法向作出具体行政行为的行政机关的上级机关或法律规定的行政机关提出申诉,由其决定是否合法、适当,重新审议并作出裁决的行政程序制度。根据定义,下列情形属于行政复议的是()。
下面叙述正确的是()。
______hehaslimitedtechnicalknowledge,theoldworkerhasalotofexperience.
最新回复
(
0
)