In this episode, the team explore the new era of personal medicine. With people taking ever bigger roles in their own health care, for the first time you can be in the driving seat when it comes to medicine. Maggie Philbin explores the rise of online diagnosis tools, putting them to the test against a real doctor, and also reports on the revolution in personally tailored medicine that is giving new life to young asthma sufferers; Jem Stansfield tests out the very latest in self-monitoring gadgets as he investigates the world of self-tracking; while Liz Bonnin finds out how a rare genetic condition that cause blindness can be corrected by a new technique that actually alters your genes.