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
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily caloric intake
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily caloric intake
admin
2019-04-27
41
问题
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily caloric intake 25% over the past eight months. The fat, not surprisingly, has melted away. But that’s not the real reason Apollos and the other participants in the program are eating only three-quarters of what they used to. The researchers are trying to determine whether restricting food intake can slow the ageing process and extend our life span. "I feel better and lighter and healthier," says Apollos. "But if it could help you live longer, that would be pretty amazing."
The idea is counterintuitive: If we eat to live, how can starving ourselves add years to our lives? Yet decades of calorie-restriction studies involving organisms ranging from microscopic yeast to rats have shown just that. Last July a long-term study led by researchers at the University of Wisconsin, found that calorie restriction seemed to extend the lives of humanlike rhesus monkeys (恒河猴) as well. The hungry primates fell victim to diabetes, heart and brain disease and cancer much less frequently than their well-fed counterparts did.
Scientists have suspected that calorie restriction could extend the life span of animals since at least 1935, when researchers at Cornell University noticed that severely food-restricted lab rats lived twice as long as normal ones and were healthier. Other investigators began exploring the idea and learned that the secret is not merely a matter of body weight.
One theory is that a state of slight hunger acts as a mild but constant stressor that makes an organism stronger and more resistant to the ills of ageing. Taking in fewer calories also slows metabolism (新陈代谢), and some data indicate that humans with a slower metabolism live longer. But even if these theories are correct, simply defining the mechanism is not the same as identifying the molecular pathways behind it. If researchers could determine those pathways, they might be able to pharmacologically mimic (模仿) the effect of calorie restriction. That could be the ultimate benefit of the CALORIE study. "Calorie restriction is pretty much the only thing out there that we know will not just prevent disease but also extend maximal life span," says Dr. Marc Hellerstein, a nutritionist at the University of California.
From Dr. Marc Hellerstein’s words, we can infer that_______.
选项
A、people who are thin can survive longer than those who aren’t
B、effective calorie restriction makes us healthier and live longer
C、keeping diet cannot help people keep fit or live longer
D、a state of hunger is beneficial for our health
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/9tZ7777K
0
大学英语四级
相关试题推荐
在中国,水稻生产是国民经济的重要组成部分。中国人早在公元前4000年就开始了水稻种植,而后逐渐传播到世界各地。目前,中国是世界上最大的水稻生产国,水稻产量占世界产量的26%。我国水稻主要种植于长江(theYangtzeRiver)沿岸及南方各省份。米饭
月饼是我国各族人民喜爱的传统节日特色食品(specialty)。中秋节那天,人们一边赏月,一边吃月饼。一个圆圆的月饼全家分着吃,代表着家人团圆。吃月饼的习俗始于唐代(theTangDynasty)。当时,月饼作为皇家祭品于中秋节所食,至明清时期(the
A、Journalistofalocalnewspaper.B、Directorofeveningradioprograms.C、Produceroftelevisioncommercials.D、Hostessofthe
A、Farmers.B、Citypeople.C、Businesspeople.D、Students.A女士说:“邮购业务很受农场主欢迎”,并说“农场主们信赖Ward和Sears”。可知该业务的主要客户是农场主。本题较简单,对话中多次提到far
A、Hewasdoingshopping.B、Hewaswatchingafilm.C、Hewasmakingaphonecall.D、Hewastalkingtoapoliceman.A短文开头就说约翰“那时正在
HowAdvertisementIsDone?A)Whenwechooseawordwedomorethangiveinformation;wealsoexpressourfeelingsaboutwha
A、Therapidreductionoftropicalforests.B、Theincreaseofglobaltemperature.C、Emergenceofanentirelynewspecies.D、Thes
A、CountriesofAmericaandEurope.B、CountriesintheMiddleEast.C、Jewishcountries.D、India.A信息明示题。短文开头就指出ThecountriesofA
A、Itwasthenameofariverboat.B、ItwasthepennameofaBritishwriter.C、Itwasatermofcommunicationamongpilots.D、It
A、Engineer.B、Passengers.C、Architects.D、Workersofairport.C信息明示题。由Andaswearearchitects,weliketothinkofsolutions.可知,
随机试题
关于教育,下列说法不正确的是()
A、bananaB、cabbageC、factoryD、packageA
易炭化物检查应使用
下列选项中,哪项不是新生儿窒息的原因
中华文化之所以源远流长、博大精深的一个重要原因是()。
在FIDIC合同条件下,属于工程量清单以外的费用有()。
下列关于会计电算化的基本要求,说法正确的有()。
必须在取得国家商务主管部门的许可后,才能经营进口列入国家公布的禁止进口目录以及其他法律、法规明令禁止或停止进口的货物、技术。()
饭店的总体经营战略主要有()。
自来水收费标准为,每户每月用水5吨以下为2.2元/吨,超过5吨时,超出部分为3.2元/吨。某月,张、李两户共交70元水费,用水量李是张的1.5倍,问张比李少交水费多少元?
最新回复
(
0
)