Robert H. Pietrzak, PhD, MPH
Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut; US Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, Connecticut; Department of Social and Behavioral Sciences, Yale School of Public Health, New Haven, Connecticut
Original Research
Geographic Differences in Cannabis Use and Cannabis Use Disorder in the US Veteran Population
January 19, 2026
Significant regional differences were observed in cannabis use and cannabis use disorder (CUD). Veterans in the Pacific region had the highest rates of cannabis use and CUD.
Brief Report
Psychosocial Correlates of Optimism among US Military Veterans
April 21, 2025
Positive psychosocial characteristics (PPCs) such as curiosity, perceived resilience, and purpose in life were strongly linked to optimism scores, suggesting a role for interventions that target other PPCs in...
Original Research
Psychological Resilience of Mental Health Workers During the Russia-Ukraine War
October 22, 2024
Interventions that bolster social connectedness, meaning in life, and optimism may help promote psychological resilience among mental health workers exposed to ongoing war-related and work-related stressors.
Brief Report
Association of Distress Due to Systemic Racism and Racial Disparities With Psychopathology and Suicidal Ideation Among Veterans During COVID-19
August 1, 2022
Data from the National Health and Resilience in Veterans Study shed light on the intersection of systemic racism and the COVID-19 pandemic.
