Michael A. Grandner, PhD, MTR

Department of Psychiatry, University of Arizona College of Medicine–Tucson, Tucson, Arizona

JCP
Risk for Suicide and Homicide Peaks at Night
Original Research

May 29, 2024

Risk for suicide and homicide is greater at night than expected based on the number of people awake at that time. Nighttime risk was greater among young adults and...
Andrew S. Tubbs, Fabian-Xosé Fernandez, Elizabeth B. Klerman, et al
JCP
Nocturnal Wakefulness and Suicide
Original Research

June 22, 2022

Research examining time-of-day as a potential suicide risk factor has produced mixed results. This study analyzed the time-of-day for suicide cases from the Australian population during an entire calendar...
Darren R. Mansfield, Sanjiwika Wasgewatta, Amy Reynolds, et al
JCP
Original Research

September 21, 2021

Prior studies showed that nocturnal wakefulness is linked to suicidality, although high-risk demographics may skew the association. This study investigated if timing of wakefulness was related to suicidal ideation...
Andrew S. Tubbs, Fabian-Xosé Fernandez, Dayna A. Johnson, et al
JCP
Original Research

February 25, 2020

Insomnia is a risk factor for suicide, and suicide risk is highest at night. Read this report to learn if this nocturnal risk is affected by other variables such...
Andrew S. Tubbs, Michael L. Perlis, Mathias Basner, et al
JCP
Original Research

October 23, 2018

Are heavy drinkers more likely to die by suicide at a particular time of the day? This study used a large database to examine circadian peaks and nadirs in...
Subhajit Chakravorty, Rachel V. Smith, Michael L. Perlis, et al
JCP
Article

June 22, 2016

Insomnia and nightmares have been shown to increase the risk for suicidal ideation and suicide. Could simply being awake at night be a risk factor as well? Perlis et...
Michael L. Perlis, Michael A. Grandner, Gregory K. Brown, et al
PCC
Article

December 31, 2015

Sleep abnormalities have been increasingly linked with suicidal behavior, although the exact nature of that relationship is unclear. Read this CME article to explore recent research into the relationship...
Subhajit Chakravorty, H.Y. Katy Siu, Linden Lalley-Chareczko, et al

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