77 NANOMEDICINE THE QUEST FOR ACCIDENT-LIMITED HEALTHSPANS Robert A. Freitas Jr., J.D. Editors  Note:  Dr.  Freitas’  original  document  includes  a  great number of graphics, tables and statistics that, for technical reasons, could not be included in this print version. You can obtain these graphics as well as an extended version of this article free of charge by visiting the E-reference site for this book: http://imminst.org/book1 The greatest advances in halting biological aging and prevent- ing natural death are likely to come from the fields of bio- technology and nanotechnology – that is, from nanomedicine. Nanomedicine  is  most  simply  and  generally  defined  as  the preservation and improvement of human health, using molec- ular tools and molecular knowledge of the human body [1]. Soon molecular tools of nanomedicine will include biologi- cally active materials with well-defined nanoscale structures, such as dendrimer-based organic devices and pharmaceuticals based on fullerenes and organic nanotubes. We should also see genetic therapies and tissue engineering becoming more common in medical practice, which can contribute a little to life extension at the oldest ages.