首页
登录
职称英语
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eatin
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eatin
游客
2023-07-14
69
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 aging 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 aging. 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、Comprehensible.
C、Incorrect.
D、Meaningless.
答案
A
解析
推理判断题。由定位句可知,如果我们靠吃饭来维持生命,那么挨饿如何使我们延年益寿呢?可知节食减肥会延长寿命看似是不合乎常理的。故A)“不合惯例的”符合题意。
转载请注明原文地址:http://tihaiku.com/zcyy/2835047.html
相关试题推荐
Andtheirword__________(有份量).carriesweight
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
Asthepaceoflifecontinuestoincrease,wearefastlosingtheartofrel
随机试题
Chineseisquite______fromEnglish.A、similarB、difficultC、differentCsimilar指
Changesinclimatethathadalreadytakenplacearemanifested【M1】______fr
驾驶机动车在高速公路发生故障,需要停车排除故障时,以下做法先后顺序正确的是哪项?
以下关于项目干系人管理的叙述中,()的表述是不正确的。A.对项目干系人
主要表现为急进性肾炎综合征的是肾小球疾病是:A.急性弥漫性增生性肾小球肾炎 B
具有抗阴道滴虫的药物是A.南瓜子B.使君子C.槟榔D.苦楝皮E.川楝子
赵先生,49岁,患风湿性心脏瓣膜病,因发生感染,心功能兰级而入院。给予抗感染和抗
中央银行提高法定存款准备金率时,在市场上引起的反应为()。A.商业银行可用资金
3岁患儿,自幼青紫,有蹲踞现象,胸片示肺血少。 该患儿的心脏听诊特点是()
影响质量的环境因素包括项目的()。A.技术环境因素 B.社会环境因素 C.管
最新回复
(
0
)