Can the aging process be slowed down or reversed?

Can the aging process be slowed down or reversed?

It's going to be very hard to slow down the aging process and it's going to be rather easier to reverse it, it turns out. This is because, just like a simple machine like a car or a house or even a nuclear power station, which is complicated by manmade standards, but still simpler than the human body, it's easier to repair ongoing damage than to prevent the damage from happening. Classic cars, for example, are a hundred years old by definition and yet they weren't built that way. They were built only to last ten or fifteen years and the reason they have lasted longer is because the people who own them do a large amount of repair and maintenance on them. They don't stop the damage from happening; rust still happens to classic cars, but the owners of the cars get rid of the rust. That's the way that we are going to figure out how to maintain the human body in a healthy and vigorous state.