The Foresight Nanotechnology Challenges are a high level roadmap for improving the human condition with advanced nanotechnology. As a part of the challenge to increase health and longevity through the application of nanomedicine, biogerontologist Aubrey de Grey provides the first and second expert opinions. "The postponement of aging is likely to follow a trajectory similar to most technologies for which there is widespread enthusiasm: after an indeterminate period in pursuit of the initial breakthrough, improvements to the technology in terms of cost, convenience and efficacy will occur rapidly. ... effective life-extension therapies will [repair age-related damage, rather than merely slowing down its accumulation, thus] most of the beneficiaries of the early life-extension therapies will survive long enough to benefit from subsequent, more effective ones."

Link: http://www.foresight.org/challenges/health.html