首页
登录
职称英语
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating
游客
2024-01-27
5
管理
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. [br] What’s the meaning of "counterintuitive" (Line 1, Para. 2)?
选项
A、Unconventional.
B、Incorrect.
C、Comprehensible.
D、Meaningless.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3399845.html
相关试题推荐
Theoceanisheatingup.That’stheconclusionofanewstudythatfindstha
Theoceanisheatingup.That’stheconclusionofanewstudythatfindstha
Theoceanisheatingup.That’stheconclusionofanewstudythatfindstha
Theoceanisheatingup.That’stheconclusionofanewstudythatfindstha
Theoceanisheatingup.That’stheconclusionofanewstudythatfindstha
Theoceanisheatingup.That’stheconclusionofanewstudythatfindstha
Theoceanisheatingup.That’stheconclusionofanewstudythatfindstha
Junkfoodiseverywhere.We’reeatingwaytoomuchofit.Mostofusknowwh
Junkfoodiseverywhere.We’reeatingwaytoomuchofit.Mostofusknowwh
[originaltext]Theold-fashionedpracticeofratinginstructorsbywatching
随机试题
[originaltext]W:Iwaswonderingifyou’dletmestaywithyouforafewdays.
Howdidtheearlypeopledotheircounting?Atfirst,theydidalltheircou
在旅游行业管理手段中,()是一种刚性的管理手段,是行政执法的具体行为。A.计
下列哪种房间的照明功率密度值最大?( )A.普通办公室 B.一般商店营业厅
患儿3岁,诊断为猩红热,为防止疾病传播,该患儿应隔离至A.体温正常 B.症状消
油浸式站用变本体及储油柜,对于波纹式油箱(包括带有弹性片式散热器油箱)的站用变,
某航空公司对服务质量及顾客满意度进行的调查统计结果显示,旅客对航空运输企业的意见
一般情况下,教育实验研究报告包括( )A.题目、摘要、引言、正文及注释等部分
抗血小板药西洛他唑属于A.维生素K拮抗剂 B.二磷酸腺苷P2Y12受体阻断剂
骨折功能复位的标准错误的是A.成人下肢骨折缩短不超过1cm B.长骨干骺端骨折
最新回复
(
0
)