Who wants to live forever\'\' belted out Freddie Mercury in 1986. We all know what happened next.\r\nBut whilst an entire generation of rock stars died too young, the rockstars of the modern age, startup founders, are keen to find new and novel ways to extend life, and more pertinently, youth.\r\nFrom gene therapies to blood transfusions, it can be difficult to unpick the genuine biological breakthroughs from the Paltrow-esque pseudo-science. \r\nMoral quandaries notwithstanding, can the longevity industry live up to its hype, or like us all, will it simply die out?