A new way to study depression may lead to more treatment options for patients. A book just published in the U.S. called “The Inflamed Mind: A Radical New Approach to Depression” examines the link between inflammation in the body and mental health. It’s estimated more than 16 million American adults suffer at least one major depressive episode a year. Author Edward Bullmore, head of the psychiatry department at the University of Cambridge in England, joins “CBS This Morning” to discuss his findings.