The free radical—starved of a single electron—goes roaming around your interior like a staggering ghoul until it finds an unsuspecting, ordinary molecule walking innocently by. What does this free radical molecular jerk do next? It steals an electron from that poor guy. A systemwide replay of this thievery becomes cellular oxidative stress, triggering a cascading host of serious illnesses. How do we stop this madness? How??! Not to sound too panicky.