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 calorie intake
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily calorie intake
admin
2019-08-27
22
问题
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily calorie 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, 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 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______.
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 a diet cannot help people keep fit or live long
D、a state of hunger is beneficial for our health
答案
B
解析
根据第四段中的“Calorie restriction is pretty much the only thing out there that we know will not just prevent disease but also extend maximal life span…”可知,限制热量摄入是我们所知道的唯一一种不仅可以预防疾病及延长生命的方法。据此可知,有效的热量控制可以让我们更健康,活得更长久,B项正确。
转载请注明原文地址:https://jikaoti.com/ti/7FNYFFFM
0
考博英语
相关试题推荐
You’rebusyfillingouttheapplicationformforapositionyoureallyneed;let’sassumeyouonceactuallycompletedacoupleo
Socialchangeismorelikelytooccurinsocietieswherethereisamixtureofdifferentkindsofpeoplethaninsocietieswhere
Whenanyoneopensacurrentaccountatabank,heislendingthebankmoney.Hemay【C1】______therepaymentofthemoneyatany
Thewaypeopleholdtothebeliefthatafun-filled,painfreelifeequalshappinessactuallyreducestheirchancesofeverattai
Thedimensionsoftourismareastonishing.In2012,theU.N.tourismorganizationcelebratedreaching1billioninternationalt
Inthepast10years,thecompanyhasgradually______allofitssmallerrivals.
TheeconomicsituationAwillimprovegiventhatthereisBforecasttobelessunemploymentandCclosuresthaninDpreviousyears
Theshortageofwaterbecamemore______thissummerwiththehighesttemperaturesin40years.(2003年复旦大学考博试题)
Think,inthesecondplace,______menofmoralprincipleowestosocietyinregardtotheevilswhichcorruptanddegradeit.
随机试题
成形车刀在切削时,应把车床主轴和滑板等各部分间隙调整得小一些,()。
A.血培养B.尿培养C.胆汁培养D.骨髓培养E.粪便培养伤寒病儿入院时常规培养
正常男性每天排铁
CT扫描程序一般为
A.空白对照B.实验对照C.标准对照D.自身对照E.相互对照实验组施加处理因素,对照组伴随是
甲是一家石油化工企业,将乙醇储罐的检修作业承包给了一家工程建设服务公司乙,下列关于相关方管理的说法当中,错误的是()。
招标人与中标人签订合同后( )个工作日内,招标人应当向中标人和未中标的投标人退还投标保证金。
如果发行的证券化产品属于债券,发行前必须经过()进行信用评级。
单个用户使用的数据视图的描述称为
下列数据结构中,能够按照“先进后出”原则存取数据的是
最新回复
(
0
)