But when Khan reviewed all the data from FDA approval trials of all the antidepressants he found no difference in suicide and suicidal behavior rates among patients who got antidepressants and those who got placebo.

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Defense attorneys point to Yates' troubling history with postpartum depression, suicide attempts and psychotic behavior.

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She got hands-on experience as an intern at a suicide crisis center in Buffalo, learned behavior therapy at SUNY Stony Brook and eventually landed at the University of Washington.

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Suicidal thinking, also known as suicidal ideation, doesn't always progress to suicidal behavior (none of the participants attempted suicide during the study).

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Its effects are mainly neurobehavioral, including poor decision-making, impaired memory, erratic behavior, use of drugs and alcohol, depression and suicide.

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What we can do, says Dr. Alex Crosby, a medical epidemiologist at the Centers for Disease Control and Prevention, is teach coping skills so that when an individual is faced with any number of risk factors for suicide, he or she will have a level of inherent protection and the tools to combat suicidal behavior.

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