Well, that's where you need an informed public

所以这就需要知情的公众
and you need people

你需要让群众
to understand as much as possible about what's going on in science,

尽可能多地了解科学
and that's what I'm going to try to help foster today.

那也正是我要努力的方向
There are a number of very interesting issues

有很多非常有趣的
pertaining to the science of diet and health.

与饮食和卫生科学有关的问题
One of the kinds of studies that get done, so for example,

这类已完成的研究中有这么一个例子
observing large populations versus doing studies in the lab.

比较大量人群和实验室小范围研究
I'll talk about correlation and causation.

我会讲讲相关性和因果关系
It's very important in studies to control for confounding factors.

在研究中控制混杂因素很重要
We'll talk about cross-sectional versus longitudinal studies.

我们将谈谈横向与纵向研究法
There are three common methods that get used in public health

公共卫生中有三种常用的方法