One of the main tools in the fight against depression is the use of selective serotonin re-uptake inhibitors (SSRI) drugs such as Prozac. SSRI medication has the effect of increasing the neurotransmitter serotonin in some parts of the brain, so it has always been assumed that depression must result from low serotonin levels. However, recent research has revealed that the brain chemistry of a depressed person is far more complex, and that too much serotonin in parts of the brain could actually...
