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
2024-01-24
35
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] 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://tihaiku.com/zcyy/3390199.html
相关试题推荐
Ifyousitalldayatanofficeandworryaboutitseffectonyourweightand
Ifyousitalldayatanofficeandworryaboutitseffectonyourweightand
Ifyousitalldayatanofficeandworryaboutitseffectonyourweightand
Ifyousitalldayatanofficeandworryaboutitseffectonyourweightand
Asavolunteer,JohnApollosislosingweight—theold-fashionedway—byeating
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthemtod
Itoftenseemsthatsomepossesssuperhumaneatingpowers,allowingthemtod
OnVolunteering1.越来越多的人从事志愿工作2.志愿工作对需要帮助的人和社会都有利,对志愿者本身也有好处3.我认为…
Thesecrettoeatinglessandbeinghappyaboutitmayhavebeencrackedyea
Thesecrettoeatinglessandbeinghappyaboutitmayhavebeencrackedyea
随机试题
Agoodmodernnewspaperisanextraordinarypieceofreading.Itisremarka
Theneedforbirthcontrolmethodshasdevelopedfairlyrecently,withthed
肝衰竭的后果不包括:()A.休克 B.黄疸 C.少尿 D.神经系统异常
不属于腮腺床内结构的是A.面神经 B.舌咽神经、迷走神经 C.颈内动静脉
张啸这次考试成绩非常差,老师找他谈话时,他分析原因是因为近期喜欢上班内一名女同学
QC小组是指()。 A.从事产品生产制造的职工,工厂、车间里将不同的零部件生
采用()方式,客户和证券经纪商面对面办理委托手续,加强了委托买卖双方的了解和信任
A.乌贼科 B.牡蛎科 C.芜青科 D.蜜蜂科 E.螳螂科海螵蛸来源于
特异性感染指A.金黄色葡萄球菌感染 B.变形杆菌感染 C.破伤风杆菌感染
下列对于推土机施工的说法,正确的是()。A.土质较软使切土深度较大时可采用分批
最新回复
(
0
)