听力文本

I express it in an interesting way in the mortality curve
这里展示的是死亡率情况
This is a typical percent alive curve for industrialized nation
这是工业化国家的典型存活率百分比曲线
We're all alive at birth for the most part but that kind of drops off with age
我们大多数人出生时都活了下来，之后存活率随年龄下降
but the demographers tell us that probably the natural human lifespan is something like 85 years ± 5
人口统计学家会说人的自然平均寿命是85±5岁
So that two standard deviations takes it back to 75 and up to 95
考虑标准差，可能是75到95岁
And if we weren't dying prematurely
如果我们没有胎死腹中
We would have a curve that looks like that
这就是典型曲线的样子
And this gap between these two is what's available for nutrition to help us work with
而中间多出来这部分是营养帮助提供的
It's not just not smoking
不只包括戒烟
it's not just gun control
不只枪支管制

it's not just wearing seatbelts
不只系安全带
all of which contributes to that gap but nutrition does it well
所有这些都能提高寿命，不过营养也很重要
If you don't believe that certainly the people who framed the national cholesterol education program and thedietary guidelines for Americans
不信的话可以参阅国家胆固醇教育计划及美国人饮食指南的内容
they believe that they say so and so many words
他们很相信这一点
That's the reason why you should do this or not do that and read the other things. The case will be
所以，应该照着做，该干什么，不该干什么
not because some particular industry want you to do but because it'll make you live longer and healthier
这不是为了讨好某个行业而是为人的健康长寿着想
Now this gets expressed actually in some interesting factual data
这里有一些有趣的事实数据
Just this past fall this publication came out of the Baltimore women's health & aging studies
这是去年秋季的巴尔的摩女性健康和老化研究

视频及简介

维生素D，是一类脂溶性维生素，属类固醇化合物。在人类所需的维生素中，维生素D非常特殊，它是一种激素的前体，而且在阳光充足的情况下，人体自身可以合成。这一讲教授着重讲了维生素D同DNA作用，参与到蛋白质合成的原理，以及维生素D对癌症、糖尿病、骨质疏松、高血压等诸多疾病的预防及辅助治疗作用。