There is a growing body of literature on the diagnosis of posttraumatic stress disorder (PTSD) after committing homicide that has examined the prevalence of this phenomenon among individuals who have been convicted, but these studies considerably vary. The present study was the first meta-analysis to synthesize scientific evidence regarding the prevalence of offense-related PTSD among convicted killers. A total of 691 articles were identified through an initial screening process, and the final analysis included 11 studies that met the analysis criteria.

This study examined how psychedelics reduced symptoms of racial trauma among black, indigenous, and people of color (BIPOC) subsequent to an experience of racism. A cross-sectional internet-based survey included questions about experiences with racism, mental health symptoms, and acute and enduring psychedelic effects. Changes in mental health were assessed by retrospective report of symptoms in the 30 days before and 30 days after an experience with psilocybin, Lysergic acid diethylamide (LSD), or 3,4- Methylenedioxymethamphetamine (MDMA).

Study Objectives: Sleep problems are common, serving as both a predictor and symptom of posttraumatic stress disorder (PTSD), with these bidirectional relationships well established in the literature. While both sleep phenotypes and PTSD are moderately heritable, there has been a paucity of investigation into potential genetic overlap between sleep and PTSD.

Suicide is one of the major causes of death in young people, in whom suicide can occur in clusters. In this Review, we have investigated definitions and epidemiology of such clusters, the factors associated with them, mechanisms by which they occur, and means of intervening and preventing them. Clustering of suicidal behaviour is more common in young people (<25 years) than adults. Suicide clusters can occur as a greater number of episodes than expected at a specific location, including in institutions (eg, schools, universities, psychiatric units, and youth offender units).