Probes recent attempts to uncover the underlying cause of the national epidemic of obesity, from scientists breeding superobese rats to the scientific search for the obesity gene and the race to create a pill to cure the fat problem.

Introduction : the trillion-dollar disease -- A weariness of eating -- Walking naked -- Natural born freaks -- On the cutting edge -- Hunger -- The clinical exception -- Collateral damage -- Spammed -- The child is father of the man -- An arm's reach from desire -- The right choice.