with the advances in stem cell research and nanotechnology it is surmised within the next ten to twenty years we will be able to decide how long we want to live, based on genetic modification, nano implants to make our blood more efficient, allow us to run faster and stay in better shape more easilly...the future within the realm of the human body will be amazing and I truly lookforward to it...although it has also been proven that almost everything man creates he weaponizes and a nano plauge could be a world ending preposition...interesting things to ponder but I feel the future will be interesting without a doubt