视频文本
This sample diet is 146% over that recommendation.
这份样餐已经超过推荐值的146%
This sample diet shows a lower sodium intake.
而这是一份低钠食品的样餐
There's less processed and ready prepared foods
这里面加工过的即食食品少一些
however this diet shown does not account for
但是从这份样餐中并看不出
salt added during preparation of such things
在加工食材，比如龙须菜和米饭的过程中
like asparagus and rice.
加入了多少盐
Notice the marinara sauce is the major source of sodium
请注意这里面的番茄酱是钠的主要来源
in this diet but the total sodium intake is well below
但是这份样餐的钠含量低于
the recommended daily intake.
每日钠摄入量的推荐值
Let's turn our attention now
现在让我们的注意力转向
to the health aspects of sodium.
钠的健康方面
High sodium intake has been linked to
过高的钠摄入量与高血压
high blood pressure, heart disease and stroke.
心脏病以及中风等疾病密切相关
High blood pressure is also known as hypertension.
高血压指的是血压高于正常值
The normal value for blood pressure is 120 over 80.
正常的血压应该是120/80
I have listed values for pre-hypertension,
我在这里已经列出了前期高血压
stage 1 and stage 2 hypertension.
一期高血压和二期高血压的数值
It is important to know what your
了解自己的正常血压值
normal blood pressure is
并随时注意血压的任何变化
and to be aware of any increases.
这一点非常重要
High blood pressure is a frightening disease
高血压史一种很恐怖的疾病
because most people have no signs or symptoms.
因为大多数人之前并不会有任何预兆迹象
Risk factors include age, race, family history,
高血压的风险因素包括年龄，种族，家庭疾病史
sedentary lifestyle, high sodium intake,
久坐不动的生活方式，过高的钠摄入量
low potassium intake and alcohol and tobacco use.
过低的钠摄入量以及吸烟和饮酒
Sodium reduced diets may not be the answer
低钠餐并不是每一个高血压患者
for everyone with high blood pressure.
的治病良方
Sodium insensitive hypertension does exist.
钠不敏感型高血压确实存在
This means that there's a resistance of
这意味着血压的变化
blood pressure changes with decreased sodium intake.
与降低钠摄入量没有关系
A 2007 study in Florida tested this concept.
2007年的一次研究对此说法进行了验证
45 people participated in the trial for 1 year.
45人参加了为期一年的试验
The goal was to reduce body weight by 7%
试验目的是，通过控制饮食和加强锻炼
by restricting diets and implementing
来达到
an exercise plan.
减肥7%的目标
Salt sensitivity was tested at the beginning
在试验的开始和结束
and at the end.
对参加试验的人进行了盐敏感度测试
It was conducted to determine
测试的目的是观察血压是否
the blood pressure reactivity to dietary salt.
会跟食物中的含盐量的变化而变化
Results found that salt resistant participants
试验结果表明
did not experience lowered blood pressure
在改善了肥胖和代谢异常问题后
after correction of obesity and
抗盐性的试验参加者
related metabolic abnormalities.
的血压并没有降下来
Much research has been done to investigate
人们做了很多实验来研究
the role of dietary sodium and health.
膳食钠和健康的关系
The dietary approaches to stop
通过饮食方法控制高血压
hypertension or DASH study
或简称DASH研究
investigated the effects of a reduced sodium diet
对低钠餐对血压的影响
on blood pressure.
进行了研究
A total of 412 participants from several US cities
来自于美国多个城市的412人参加了试验
are randomly selected to either the control
他们被随机分成控制饮食组
or DASH diet for 30 days.
和DASH组

视频及简介

视频简介：

本课程的目标是，向公众提供最新的有关营养方面的信息和话题，内容涵盖饮食因素对于癌症的影响作用，健康的饮食习惯，学校能提供的营养有哪些，咖啡因与癌症的联系，水果蔬菜与癌症预防等。通过本课程的学习，人们可以学习到健康的生活饮食习惯，在每天的饮食中防癌症于未然

重点讲解

重点讲解：
1.account for 解释；占；说明…的原因
例句：What he said account for this strange phenomenon.
他所说的解释了这种奇怪的现象。

2.turn one's attention 转移某人注意力
例句：I turn my attention back to my screen.
我将注意力转回我自己的屏幕。

3.participate in 参与；参加某事；
例句：I hope to hear and participate in meaningful discussions on the matter in the coming year.
我期待在来年有机会听取这方面的意见，以及参与有关的讨论。

4.the role of ...的作用
例句：The role of the die is to enable the processing of raw materials conducive to forming, easy-to-volume production.
模具的作用是使加工的原材料利于成型，便于批量生产。