Let's talk about how we know about the link of diet and health.
那我们是如何得知饮食与健康的关系的呢
Does it change how humans appreciate food, what it does to their relationship with food, and of course what it does to their health and well being.
这会改变人类对待食物的方式吗,这会对人类与食物的关系有什么影响,这对人类的健康又有什么影响
The things I spoke about before: pursuing meaning,purpose; cultivating healthy relationships.
这我之前已谈过,追求有意义的生活,人生的目的;,培养健康的人际关系。
They use food frequency questionnaires, which I mentioned before, surveys, and then biological markers like blood tests of certain things to see how diet is related to health.
研究员还运用食物频率调查表,我之前曾提到过,各类调查以及生物标志物,像是血液检测等手段,来研究饮食与健康之间的关系
What made things go so awry that people and food used to be more in sync in terms of health and well-being, although there were problems in some ways.
是什么让一切偏离正轨,尽管有些方面存在种种问题,过去人与食物的关系,就健康方面而言,要比现在更为和谐
Given these relationships between diet and health -you've got too few calories are bad, too many calories are bad, too much fat is bad, other things are good-- then, what should people eat?
考虑到饮食和健康的密切关系,比如热量摄入过低不健康,摄入过高也不健康,脂肪过多不健康,还有些东西是健康的,那么,人们到底应该吃什么呢
There is a researcher at The Harvard Medical School named David Ludwig who's done a terrific series of studies on the glycemic index and found how it relates to food intake, body weight regulation, and health.
在哈佛医学院有一个研究员,名叫大卫·路德维格,他在血糖指数方面,做了一系列出色的研究,并发现了血糖指数与食物摄取,体重控制以及健康之间的关系
Now several lectures down the road we'll talk about modern food and epidemiology; that is what the research on food intake and human health, and what do we know about our health and well-being based on diets.
接下来的几堂课,我们将讨论现代食品和流行病学的关系,即食品摄入与人类健康方面的研究,我们通过饮食来了解自身健康状况
I'd like to give you examples of three of very famous epistudies on diet and health: The Framingham Heart Study, The Seven Country Study, and The Nurses' Health Study, and then we'll talk about some of the overall results from these sort of things.
我想给大家讲有关饮食与健康的关系的,三个著名传染病学研究实验,弗明汉心脏病研究,七国研究,以及护士健康研究,然后讲一下这些因素带来的一些总体影响
There are really two purposes in us doing this: one was so you can get a fix on your own eating, and second you can see the challenges that are involved in assessing what people eat when you start doing studies linking diet to health.
这么做实际上有两个目的,一是你可以调整你自己的饮食,二是当你开始研究,饮食与健康的关系时,你会发现,在对人们吃什么进行评估时存在很多困难
There are a number of different methods that scientists use to see what foods are related to particular health outcomes, and we won't go through all of them but I will -over the course of the class we'll talk about various methods, but I'd like to talk about two primary ones today.
科学家有很多不同的方法,来研究食物与健康的关系,我们不会一一提及但我会,这门课上我们会提到很多方法,但我今天只想说两大重要方法
But the fact that reducing cholesterol is considered good for you in the first place, depends on these kinds of studies on population intake to know how much cholesterol people are eating and then link it to reports of heart disease, or cancer, or whatever the health outcome is.
但减少胆固醇这个事实,首先对你来说是好的,依据这些关于总体摄入量的研究可以知道,人们摄入胆固醇的多少,关系到心脏疾病,或癌症或其他健康问题
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