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
2020-09-03
19
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.
The purpose of keeping diet for John Apollos and other participants is to_______.
选项
A、lose weight in order to keep slim
B、prove how long people can survive if they lack food
C、prove if eating less food can extend life span and keep young
D、just keep a good mood and live a healthier life
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/77d7777K
0
大学英语四级
相关试题推荐
A、Theyareolderthanyoungpeople.B、Theyoungpeoplewillsoonbeinchargeofthenation.C、Thestudentstodayhavestrongop
A、Thecookingtechnologyhasbeenimprovedgreatly.B、Peoplenowadaystakecookingastheirhobby.C、Familymembersaredecreasi
A、Hehadvariouspoliticalexperiences.B、Hepreferredcivilianclothestouniform.C、Hewastallandhandsome.D、Hewasgentle
A、Apersonshouldlearntobemoralandrespectful.B、Awisemancan’talwaysbewise.C、Peoplearoundaremuchsmarterthanus.
Ifyousitalldayatanofficeandworryaboutitseffectonyourweightandhealth,takeafewbreaks.That’stheadvicefr
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeatingless.Apolloshasloweredhisdailycaloricintake
Whyyoushouldn’ttrytobeamorningpersonA)We’veallhearditbefore:tobesuccessful,getoutofbedearly.Afterall,
Anewscholarlystudydocumentingthepoorhealthofsouthernmilitaryrecruits(新兵)hasbeenmuchreported.Theteamofresearc
A、Toinventnewtechnologicaldevices.B、Tohelpchildrenrespondquickly.C、Tocreatearevolutioninteachingandtraining.D、
A、Newtechnology.B、Seriousairpollution.C、Goodpublicservices.D、Low-incomehousing.D
随机试题
肝门横断层面上的肝段不包括
材料1马克思曾经说过:“如果一个人只为自己劳动,他也许能够成为著名的学者、伟大的哲人、卓越的诗人,然而他永远不能成为完美的、真正伟大的人物……如果我们选择了最能为人类而工作的职业,那么,重担就不能把我们压倒,因为这是为大家作出的牺牲;那时我们所享受的
发作性睡病猝倒发作时描述错误的一项是
一般需经3~4周培养才能见到有细菌生长的细菌是A.结核杆菌B.淋球菌C.空肠弯曲菌D.炭疽菌E.军团菌
职业健康安全管理体系文件不包括()。
赵某家住北京中关村,出国归来时因携带行李过多被首都机场海关认定为走私,赵某现欲提起行政复议,下列关于复议机关的说法不正确的是()。
下列行为中属于不正当竞争行为的有()。
二十国集团(G20)伦敦金融峰会2009年4月2日落下帷幕,与会领导人就国际货币基金组织增资和加强金融监管等、全球携手应对此次金融危机的议题达成多项共识。二十国集团领导人同意为国际货币基金组织和世界银行等多边金融机构提供总额1.1万亿美元资金,以帮助陷入困
IP地址块202.113.79.0/27、202.113.79.32/27和202.113.79.64/26经过聚合后可分配的IP地址数为()。
根据可信计算机系统评估准则(TESEC),用户能定义访问控制要求的自主保护类型系统属于()。
最新回复
(
0
)