where heart disease risk factors were mentioned,

主要研究的是影响心脏病的危险因素
but he also did a very famous study on people starving.

他还做了一项著名的关于人们挨饿的研究
When we come back and talk about hunger in a subsequent class

在后面讲饥饿问题时我们会讲到这个研究
we'll discuss that, but he did a very interesting study

这是一个很有趣的研究
that's been written about a lot,

也被经常引用
where he took conscientious objectors from World War II

安塞尔.凯斯让一些拒服二战兵役的人
and who participated as volunteers in an experiment and starved them,

作为志愿者参与到一项实验并让他们挨饿
I mean put them basically on about 75% of their usual calorie intake

挨饿是指每天只摄入正常热量的75%
to see what happened to them over

看看在一段时间内对他们
--psychologically and biologically over a period of time.

的心理和生理有怎样的影响
The interest there was what do--can we learn about this

我们关心的是从这项研究中能学到什么
because there were populations all over the world starving

世界上有很多人还在忍饥挨饿