Massachusetts General Hospital (MGH) in Boston, in collaboration with Butler Hospital in Providence, is currently undertaking a clinical trial examining the effectiveness of the nutritional supplement S-adenosyl methionine (SAM-e) as a treatment for depression. A naturally occurring substance found in every human cell, SAM-e is known to play a role in the synthesis of serotonin and other brain chemicals involved in the regulation of mood. Nutritional supplements containing SAM-e have been...