When 4-year-old Andrew Burd arrived at a hospital in critical condition in the fall of 2006, doctors didn't have a clue as to what was wrong with him. But blood tests soon revealed he had salt poisoning, or hypernatremia. Andrew's levels were off the charts: almost double the norm and among the highest ever recorded.
Doctors turned to Hannah Overton, a 29-year-old mother of four who was in the process of adopting Andrew. She told them Andrew had thrown a fit that afternoon after he'd been...Full Story