Pacemakers Good, Vampires Bad

Oh the injustice of it. It seems that Canadian scientists have developed a fuel cell that runs on the glucose present in human blood. So if your pacemaker starts to flag you can go eat a doughnut and the resultant sugar hit will fire up your little metal friend and kick your ailing ticker back into action. But wait, I hear you cry, when the unded bretheren of the leathery wing variety used to get up to this kind of caper they were hounded from pillar to post by the unspeakable Snipes/Kristofferson axis. It all seems so unfair.