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Are there foods that could be called super foods?
世界上是否存在超级食物呢?
Some advertising suggests certain foods or ingredients
一些广告中称，有些事物中含有
have an extra special health benefit.
对人体健康极其有益的物质
This presentation will discuss what types of food
本讲我们就来看看哪些食物可以
could be classified as "super" and what benefits
称为超级食物，它们又能从哪些
they can contribute to a healthy lifestyle.
方面促进人体健康呢?
When you think of super foods, what comes to mind?
说到超级食物，首先涌入你脑海的是什么?
Super foods are everywhere.
到处都是超级食物
There are over 100 recognized super foods.
经过认定的超级食物超过了一百种
The title "super foods" includes a wide variety
超级食物包括很多种类的
of foods including fruits, vegetables, grains,
水果，蔬菜和谷类
and much more. I'm going to share with you some
除此之外，我要告诉大家一些常见的
common super foods and the benefits of incorporating
超级食物以及在饮食中添加这些
these foods into a balanced diet.
食物，对身体会带来哪些好处
Let's talk about what super foods are. It is important
我们首先来看什么是超级食物
to note that there is no official definition for
关于超级食物，并没有一个官方定义
super foods. If you Google "super foods",
如果你在网上搜索"超级食物"
you will find hundreds of foods that in reality
你会看到几百种食物，而它们实际上或许
may or may not be a super food. A general definition
与超级食物并没有关系，超级食物的
of a super food is one that provides health benefits
一个概括性的定义就是，能够提供常规
beyond basic nutrition, improves overall health,
营养之外的营养物质，提高身体机能
and helps prevent disease. Super foods are also
能够预防疾病的食物，超级食物通常
usually nutrient-rich and contain
富含营养物质
high amounts of antioxidants.
具有极强的抗氧化功能
Recently, super foods have become popular.
最近超级食物十分盛行
Many Americans are interested in the effects of their
越来越多的美国人开始关注自己的
diet on their health and look for foods and beverages
饮食和健康，并且开始寻找
with added health benefits. Many consumers may be
对健康有益的食品和饮品，很多消费者
seeking more convenient ways to gain health benefits
或许都在寻找便捷的方法来通过饮食
in their diets. And super foods have also been getting
保持身体健康，除此之外，超级食物
a lot of media attention recently from T.V.
近期在也深受媒体和电视的关注
shows like Oprah to magazine articles and headlines
包括奥普拉脱口秀，杂志和报纸都十分
in the news. This focus on certain foods may
关注超级食物，但是人们对某些食物的
lead to confusion about what makes one
过度关注也不禁使人们困惑，到底是
food super and another one not so super.
什么使一种食物成为超级食物呢?
There are some problems with the concept of
关于超级食物的概念有存在一些问题
super foods. Some foods may be naturally nutrient rich
一些食物可能本身就存在极高的营养价值
while others are enhanced with added nutrients through
而另一些则通过制成加强型食品而增加
enrichment or fortification. This may be of concern
营养物质含量，因此，有些原本不健康的饮食
if unhealthy food choices are promoted as super foods
由于添加了维生素和矿物质成分而被
because they have been enriched with vitamins and
宣传为超级食物
minerals for example. Foods that are enriched or
那些加强型食物或许
fortified may contain these healthy ingredients,
包含很多对健康有益的营养物质
but consumers need to be cautious of the other
但是我们必须十分小心，因为其中
ingredients in these products. Some may contain
还可能添加有其他物质，其中一些可能
high amounts of sugar or fat. Another problem with
含有较多的糖和脂肪，超级食物的
super foods is that some of the beneficial ingredients
另一个问题就是，一些有益的成分
may not be well absorbed in the ways that they are
可能并不能被很好地吸收，其实际吸收效果
marketed to consumers. The bioavailability of a
与宣传中的有差异，一种营养物质的吸收
nutrient can be influenced by the chemical form in
与其制作形式，以及其他因素
which it appears in the diet and by the presence of
都具有十分密切的关系
other factors in the food that may enhance
这些因素都有可能
or depress absorption and utilization.
增强或者抑制营养物质的吸收和利用
Let's turn our attention now to learning about
下面我们来看一些
some foods that have good nutritional value and
具有极高营养价值的食物
could be called super foods.
它们可以被称为超级食物
Because of the healthful benefits of these foods,
因为它们拥有极高的营养价值
you should consider selecting a wide variety of these
在选择饮食搭配上，你必须小心
foods for your diet. I will present some helpful
选择将多种食物搭配起来
information about each of the
下面我要给大家依次讲解
foods shown here on this slide.
幻灯片上的食物
