Why we age, and how we could stop aging

OK, so I was just messing around with Google, and I stepped on a very interesting topic. I found a presentation on aging, and how we can stop it. The presentation seems to be set in an auditorium full of PhD holders. 

This is a legit argument from Aubrey de Grey, a British researcher on aging. Aubrey believes that aging is just a disease and it is curable if we get serious about it, and actually try. He argues that people that are alive today could live up to be the first people to ever reach a 1000 years of age if we start working on this thing a little harder. He says that this was already tried on mice, and they have succeeded on adding an extra 2 healthy years on mice. 

The funding will be greatly needed though he jokes about the cost of the Iraq war's cost. 

He goes pretty fast through the speech since he has a limited time for his presentation. I'm actually very interested in this, and I will start doing some independent research. I'm currently working on a Bachelor's Degree in Biochemistry, and I'm half way there, so I do have plenty of background information on this subject.

His reasoning to why this could work is because of the connection between metabolism and pathology, and in between these two major steps in our lives, damage occurs to our bodies. We have already figured out everything about this damage, and we've known about it for a while now. He does mention that this topic is highly disregarded by science, and has not had any serious attempts at it because no one can see immortality to ever come by. People dream of it, though it has never happened to a human, or any organism for that matter. Though for thousands of years people have dreamed of flying, and not until the last century were we able to accomplish this phenomenon in which we have nearly perfected today.

Anyone else fascinated by this hypothesis? 

You might be skeptical about this topic, and you might have plenty of arguments, though trust me he has had them and he briefly answers a few of them in his presentation. 

If you want more information, here is the presentation by Aubrey de Grey. I gave you the highlights, though you could watch it more in depth if you would like to.