纪录片《节食还是截寿》 第19期:基因改造的产物（在线收听）

I could feel that one going through.

我都感觉到它的牙齿了

Should've had the double glove.

你应该带双层手套的

I learned the hard way!

我也是吃过苦头才知道的

The big mouse already has a 50% chance of being dead.

这只大老鼠已经有50%死亡的可能

OK, so he's doing well to be alive?

它还活得挺好的

He's lucky to be alive, that's right.

很幸运它能活到现在

- The small one probably has another year to go. - Oh, right.

-而这只小的还有一年的寿命 -好的

The little guy will live

这只小家伙能活到

on to the equivalent of what, 120 in human?

按人类的年龄来算的话 120岁吗

Exactly, yeah.

是的

Another 30 to 40 years in human years.

折算成人的话 它还有三四十年的寿命

- Can I pick it up? - Go ahead.

-我能把它抓起来吗 -抓吧

- By the tail. - OK.

-抓尾巴 -好的

The little mouse I'm holding

我现在抓住的这只小鼠

is actually a man-made creation.

其实是基因改造的产物

The reason he's so small and so long lived

它之所以如此瘦小和长寿

is because he's been genetically engineered.

是因为它的基因被改变了

He has incredibly low levels of a growth hormone

它体内的生长激素 也就是

called Insulin-like Growth Factor 1.

类胰岛素一号生长因子的水平非常低

And it seems IGF-1 is a key factor

看来类胰岛素一号生长因子是

linking calorie restriction and longevity.

将低热量饮食和长寿联在一起的主要因素