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
Caffeinated coffee may have an undeserved bad rap. A new study shows the decaffeinated variety may have harmful heart effects. T
Caffeinated coffee may have an undeserved bad rap. A new study shows the decaffeinated variety may have harmful heart effects. T
admin
2013-11-29
35
问题
Caffeinated coffee may have an undeserved bad rap. A new study shows the decaffeinated variety may have harmful heart effects. The study showed that people who drank decaf had higher levels of a protein linked to heart disease risk compared with those who drank caffeinated coffee or no coffee. "But the differences were fairly small and there’s probably no health threat from drinking a cup or two of any type of coffee a day," says researcher H. Robert Superko, MD. The research is the latest entry into a long line of scientific studies looking at whether coffee drinking can lead to heart disease.
The participants were given premeasured bags of coffee to make in their coffee machines provided by researchers, They agreed to drink it black--no cream or sugar al-lowed. And they agreed to periodic blood tests so the researchers could keep track of exactly how much caffeine they drank. The 187 volunteers were assigned to one of three groups: no coffee, three to six cups a day of caffeinated coffee, or three to six cups of decaf. After three months, levels of apolipoprotein B (ApoB) were up significantly in the decaffeinated group while staying relatively unchanged in the other two groups. The amount of ApoB has been suggested in other studies to be a better predictor of cardio-vascular disease risk.
There was one group for whom decaf appeared to be heart healthy: the overweight. For those who had body mass indexes (BMIs) of more than 25, drinking decaffeinated coffee boosted levels of HDL (high density lipoprotein) by about 50%. Among those with lower BMIs (who were not overweight), HDL dropped 30%. Elevated HDL is known to protect the heart.
Here’s also good news for people who love coffee: Drinking it doesn’t seem to cause long-term high blood pressure, a study suggests. Caffeine is a well-known ingredient in both beverages, and has been shown to cause short-term increases in blood pressure. Previous data on coffee and hypertension is mixed. There’s a common perception that its temporary effects on blood pressure mean an increased long-term risk, said Dr. Wolfgang Winkelmayer, the study’s lead author. "We found strong evidence to refute that belief," the researchers wrote. There was even some evidence that people who drank lots of coffee--four or more daily cups of regular or decal--faced a slightly lower risk for developing high blood pressure than those who drank little or none. Winkelmayer said that might be because coffee has lots of antioxidants, substances that are thought to be helpful.
Who will benefit from drinking decaf coffee according to the passage?
选项
A、Those with law BMIs.
B、Those who are overweight.
C、Those who are old and fat.
D、Those who have heart disease.
答案
B
解析
参照第2题的解析。另外,文中提到BMIs是body mass indexes(体重指数)。
转载请注明原文地址:https://kaotiyun.com/show/FRhO777K
0
考博英语
相关试题推荐
Eveninfreshwatersharkshuntandkill.TheThreshershark,capableofliftingasmallboatoutofthewater,hasbeensighted
Inrecentyears,railroadshavebeencombiningwitheachother,mergingintosupersystems,causingheightenedconcernsaboutmo
Justiceinsocietymustincludebothafairtrialtotheaccusedandtheselectionofanappropriatepunishmentforthoseproven
MorethanhalfofallJewsmarriedinU.S.since1990havewedpeoplewhoaren’tJewish.Nearly480,000Americanchildrentrader
Theinfluenceofthemoralstandardsofthehomeisevident.Ifthereisnorecognitionofthedifference【B1】______rightand
IhadvisitedthecapitalbeforealthoughmyfriendArthurhadnot,IfirstvisitedLondonasastudent,reluctantlyreleasedfr
ThestudyoflawhasbeenrecognizedforcenturiesasabasicintellectualdisciplineinEuropeanuniversities.However,onlyin
OnecountrythatiscertainoftheeffectoffilmsontourismisAustralia.TheTouristOfficeofQueenslandsaythatCrocodile
Sometimes______mattersmayresultinsurprisinglylargeeffects.
Itdeniestothepastanintegrityandwillofitsown,______peopleactedoutofavarietyofmotivesand______eventshadamul
随机试题
对于肺结节、肺弥散性病变,一般采取
全口义齿与唇颊肌作用关系最密切
外呼吸包括___________和___________。
调整性筹资的目的,是为了调整资本结构,而不是为企业经营活动追加资金,这类筹资通常不会增加企业的资本总额。()
当在Windows操作系统中打开了多个应用程序时,切换窗口应使用的快捷键是(
自带来诸多社会矛盾且已“污名化”后,近年来暂住证制度在各地已陆续废除。打上了“服务”标签的“居住证”制度成为社会管理上的一种“制度创新”。在很多城市,它对流动人口作出了融入城市社会的承诺。然而,其根本缺陷就是门槛极高,且仍延续对“本地人”、“外地人”的身份
推进供给侧结构性改革,是适应和引领经济发展新常态的重大创新,是适应国际金融危机发生后综合国力竞争新形势的主动选择。从政治经济学角度看。供给侧结构性改革的根本是()
Atthemomentthesecondplanewasslammingintothesouthtower,PresidentBushwas(1)_____tothesecond-gradersofEmmaE.B
TheeightairlinesoftheOne-worldalliancehavejoinedforcestogiveworldtravelersasimplewaytoplanandbookaround-th
Acupuncture(针灸)isbasedontheideathatenergyflowsthroughthehumanbodyalong12linesormeridians(经脉).Thesemeridians
最新回复
(
0
)