Unlike fruitflies, people cannot yet be genetically engineered to live longer. However genes are important. Now there must be something driving that. The promise of genetics may be to find ways to slow the rate of wear and tear on our bodies. I tend to doubt it.
Some researchers say the big picture is as much philosophy as science.
So the best thing to do is lead a sensible life, try to enjoy each day. I mean a lot of these people who want to live forever are pretty miserable human beings. National Instute on Aging Southern Methodist University Feedback Send us your comments. Selected responses are posted daily. External sites are not endorsed by CNN Interactive.