This ebook investigates the role of prolactin in the development of suicidal behaviors among patients with dysmetabolism. The research, reviewed in this ebook, suggests that patients affected by hyperprolactinema might be at risk for suicide attempts. The discussion calls for health-care professionals to evaluate prolactin as a risk factor for suicide Practical recommendations for caregivers are provided.Written by:Gianluca Serafini, Department of Neuroscience, Mental Health and Sensory Functions, Suicide Prevention Center, Sant’Andrea Hospital, Sapienza University of Rome, ItalyDavid Lester, The Richard Stockton College of New Jersey, NJMaurizio Pompili, Department of Neuroscience, Mental Health and Sensory Functions, Suicide Prevention Center, Sant’Andrea Hospital, Sapienza University of Rome, ItalyEdited by:Alan L. Berman, Ph.D., Executive Director, American Association of Suicidology, President, International Association for Suicide PreventionMaurizio Pompili, M.D., Ph.D., Department of Psychiatry, Sant’ Andrea Hospital, Sapienza University of Rome, Italy and McLean Hospital, Harvard Medical School, MA