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Nutrition is considered the process, the behavioral process by which people require--acquire nutrients, and use them to promote vital activities.
营养作用就是营养的供给和摄取,也就是人们摄取营养,并将其转化为生命力的行为过程
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Humans suffered as a consequence from nutritional deficiencies in almost all parts of the world because there weren't complete diets.
几乎全世界的人们都饱受营养不良的困扰,因为他们没有平衡的食谱
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And this report also mentioned that half of...almost half of India's children 3 to 5 years...under 3 to 5 years old are mal-nourished? -Yes.
这篇报道还提到,3到5岁的,印度孩子中大概有一半,都是营养不良的？，-对。
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Because nutrition is going to be one of the big problems of your generation; how to have enough nutritious food for the population as it grows.
因为营养,对你们这一代人是个大问题,怎样才能确保食物的质和量,能够满足日益增长人口的需求
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And then the most surprising thing of all was a study done not long ago, published in 1997 of registered dieticians.
不久前的实验中,让人惊奇的事发生了,在1997年由注册营养学家发表
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It's a very interesting discussion, but he also talks--and this is discussed in his book-- about the concept of nutritionism.
这是一次非常有趣的探讨,他在书中还提到了,营养学的理念
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Willett is a very prominent nutrition researcher and his name will come up in a variety of context in the class.
沃尔特是一名出色的营养学研究员,以后的课会经常提到他的名字
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There were also issues about nutritional adequacy and meat turned out to be a better overall food than most plants.
还有关于营养充分的问题,这样看,肉类较植物来说是更好的食物
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Can the body ingest this particular item and deal with it in a reasonable way and not have internal havoc occur?
营养能否被身体摄取,能否被适当的消化,不导致机体的紊乱
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Well the cauliflower has some nutrients that are important, but the Haagen-Dazs has immediate value because of the energy it gives you.
菜花里面含有一些重要的营养物质,但哈根达斯的价值则更直接,它可以马上为你提供能量
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They're the magic nutrient books: carbohydrates, fat, whatever it happens to be, that's one theme you could follow.
它们是些神奇的营养学书籍,碳水化合物,脂肪,或者其它东西,都可以成为著书的主题
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So the nutrition landscape and the physical activity landscape is changing and is sweeping way across the world.
营养和人类日常活动的范畴已日渐改变,且该影响已经席卷全球
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It's also nice, by the way, that there are these electronic programs that immediately figure out the nutrient breakdown of what you're eating.
顺便说一句,好在现在很多的电脑程序,能快速分析出你所吃食物的营养成分
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There's one particular issue with overnutrition called the metabolic syndrome that I'd like to talk about and show you a little data on.
代谢综合征是我将讨论并列举数据的,其中一个与营养过剩有关的问题
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But in some parts of the class the distinction between nutrients and food is made quite distinct.
但是在我们的某些课程中,营养素与食物之间有明确的分水岭
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So those are the terms that get used a lot in the field.
这两个是营养学领域里广泛使用的术语
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But if you throw off the environment, in this case, the animal's biology, it's drive for certain nutrients is in concert with the food it has access to.
如果让它们换个环境,这种情况下,这些动物的生理特性,即它们有多少动力去获取某些营养元素,是与其食物源状态有关的
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This diagram is supposed to make you think about the intestinal tract, this tube that runs through our bodies and allows us to acquire nutrients from the environment.
这幅图意在,让你们考虑一下肠道,这个贯穿我们身体的管道,使我们能够从环境中吸收营养
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All right, I'd like to continue what we started discussing last week, which is some fundamental information on nutrition.
好的,我想继续上周讨论的话题,即,一些营养学的基本信息
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Now so-- just in that little quiz you can see that you guys have varying levels of knowledge about nutrition.
根据刚才的测试可以发现,对于营养学,你们的知识量各有不同
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We'll talk a lot about that, because it says a great deal about the way our government deals with nutrition issues.
我们会在这上面花很多时间,因为该图很大程度上,向我们揭示了政府对营养问题的态度
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As we mentioned in one of the earlier classes, these macronutrients differ in how much energy you can derive from them.
我在之前一节课提过,身体从不同大量营养素中吸收的能量不同
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They deliver different amounts of energy and they also deliver different amounts of nutrients, but we'll talk about the energy for the moment.
它们提供的能量不等,提供的营养数量也是不同的,当然我们现在讨论的是能量
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Nutrients get broken down into several classes and these are the constituents of food that your body uses for one purpose or another.
营养素这个问题需要花几节课来讨论,它们是食物的组成要素,供给身体吸收,支持身体机能运转
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Well, both are foods, depending on your definition, but both are foods. Both have nutrients, both have things your body can make use of.
根据普遍的定义,两种都是食物,都是食物,都有营养素,都含有人类身体可吸收利用的物质
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Now, daily values are established by the government, how much nutrients the typical person needs and then how much--what percentage of that a food provides.
每日建议摄取量是由政府制定的,代表普通人的日营养需求量,这里给出了该食物所能提供的百分比
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Now one--people get very worked up about what the government nutrition guidelines are.
现在政府的营养指南,引起人们很大的兴趣
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The people who write about food history have called these things superfoods, not necessarily because they're super rich in all nutrients, but because they were super available.
那些写饮食史的人,将这些称之为超级食物,不一定是因为它们富含所有营养物质,而是因为它们随处可见
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It'll also give you a breakdown of the particular nutrients of that food.
它还会给出一份,该食物的营养成分表
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