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Let's think about some of these like weight.
我们来想一下这些数据吧,比如体重
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This normal weight animal like this has its whole equilibrium thrown off, its homeostasis thrown off when its dietary conditions change.
在饮食条件发生变化时,这些正常体重动物的生理平衡被打破,于是摈弃了原来的平衡饮食
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What about lots of us lose lot of our weight, being like--really having rebirth to that, really been crazy.
那减肥这个现象呢，很多人减肥，好像得到重生，他们疯狂地去减肥。
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Now, people are studying obese subjects because there're weight loss programs, like the one we had, and the subjects are available.
现在人们开始以肥胖者为实验对象,因为有许多减肥的项目,肥胖的实验对象是较容易找到的
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Like somebody, for example, who has got extremely low weight might be that, and that explains part of it.
比如说那些体重非常轻的人,这解释了部分原因
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Each of you probably know, some of you may be in this category yourself, people who can eat like crazy and still not gain weight.
你们每个人可能都知道,你们中有些人是那种,怎么吃都不会发胖的人
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In that process there is a metabolic engine at work, and some people have an efficient engine so that the calories in get banked in the fat, other people have an inefficient engine, that is the calories get wasted as body heat and things like that, and they tend not to gain weight.
这过程中人体内有个工作着的代谢引擎,有些人的代谢引擎效率很高,热量便转化为脂肪储存起来,另一些人的效率低下,能量就以体温等形式被浪费了,因此他们就不容易发胖
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You could take weights on people measured over a period of many years and look at the variability over time in weight and then link it to things like heart disease and cancer, and I'll come back later and talk about the results of that particular study.
我们还可以得到人们很长一段时间里,每年的体重数据,观察体重随着时间变化的变动,并将观察结果与心脏疾病和癌症联系起来,我等一下会告诉大家这项研究的结果
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What this is, is you take a group of studies on an issue, you pool them all together, and then you weight studies differently depending on factors like how large they were, how good their methods were, and then you come out with overall estimates about the impact of something, in this case the Mediterranean Diet, on health outcomes.
所谓荟萃分析就是将某一问题的一组研究,汇总起来,并根据某些因素,赋予这些研究不同的权重,如基于研究的大小,研究方法的好坏等,然后得出关于某事物的影响的总体评估,在地中海式饮食中就是指健康结果
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