Derek Lowe, over at the Lagniappe blog, has a nice little summary of the current state of medical science.

In the long run, I fully expect gene therapy and antisense to fix what can be fixed at the genomic level. Downstream, I think we’ll eventually get control of protein expression, which should take care of another huge swath of trouble. Small- molecule folks like me (or the next generation after me) will take care of the rest. And as we go after diseases, we’ll also be figuring out how to deal with the normal damage of aging. I don’t know how long the human life span can be extended, but I’m certain that we don’t have to live it in poor health. We may not know the exact mechanism of Alzheimer’s, for example, but we know that it’s the result of something going wrong, something that can be fixed. Damn it, show me something that can’t be fixed!

Me, too. People who believe that aging is inevitable, and that there’s some physical law that prevents us from preventing it, are living in some non-materialist otherworld. Our bodies have been designed to age by nature. We can redesign them, as long as we don’t deify “nature.”