Google has started the Calico project to work on extending life. Some previous methods to attempt immortality have been cryogenics, digital uploading which 2045.com is working on, resveratrol found in grape skins, and immortnal worms called planarians. Additionaly, a good diet of reduced carbs or specific fasting techniques can extend life by a protein interaction involving NHR-49, Hsp70, or plasma protein A. Trillions of dollars could be saved by extending life if made inexpensive, or could just extend the lives of the rich if expensive. I believe for now Google plans to help everyone although there may be bad side effects. Here is a video explaining how the immortal worms live forever. The worms regenerate their telomeres in the end of chromosomes after they are cut or regenerate.
Another article on Calico: http://io9.com/google-wants-you-to-live-forever-1349384338