Over 10 million Americans suffer from a medical condition known as Generalized Anxiety Disorder (GAD).

It is thought to have been caused by a chemical imbalance in the brain when there is too much of a substance called "serotonin." It can also be inherited or triggered by past traumas and stressful events.

You may have Generalized Anxiety Disorder (GAD) if you've had overwhelming unfounded worry and several of these symptoms for six or more months: