11 papers in the library · 58 citations · publishing 2022-2026
PLoS One June 30, 2026 David Sjöström, Olea Schau Rybäck, Emma Claesdotter-Knutsson et al.
Study Protocol for "Exploring the safety and therapeutic potential of psilocybin in the treatment of anorexia nervosa in adolescents and young adults".
Journal of Psychoactive Drugs March 18, 2026 Jonathan Bendz, Linus Schäfer, David Sjöström et al.
Psychedelic experiences have been associated with improved quality of life, but many studies rely on samples of enthusiasts, raising concerns about selection bias. This study examined whether self-reported quality-of-life impact differed between a convenience sample of psychedelic enthusiasts and a general population sample recruited through Prolific, and whether sample differences persisted...
Journal of Psychopharmacology March 9, 2026 Alicia Cohorst, Petri Kajonius
This meta-analysis and systematic review examined the effects of psychedelic substances on death anxiety, specifically evaluating whether psychedelic experiences are associated with statistically significant reductions in death anxiety. A systematic search identified 8 studies suitable for meta-analysis and 10 additional studies for systematic review. Using a random-effects model, the...
Child and Adolescent Psychiatry and Mental Health February 24, 2026 David Sjöström, Emma Claesdotter-Knutsson, Petri Kajonius
BACKGROUND: Adolescents are increasingly using classical psychedelics, yet little is known about how psychedelics use is related to their mental health. Emerging evidence suggests that adolescents may be more vulnerable to adverse outcomes in relation to psychedelic use compared to adults. This descriptive and exploratory study examined differences between adolescents and adults in reported...
Journal of Psychedelic Studies November 24, 2025 Petri Kajonius, David Sjöström, Emma Claesdotter-Knutsson 3 citations
Abstract A surge in societal and scientific discussion surrounds psychedelic research. One surprising fact keeps standing out: Many users report the psychedelic experience as a positive and lasting impact on their quality of life. The present study aimed to explore the quality and consequences of the most impacting psychedelic experience, with the user's Big Five personality in focus. This...
Journal of Psychoactive Drugs January 2, 2025 Petri Kajonius, David Sjöström, Emma Claesdotter-Knutsson 5 citations
In the midst of growing research and societal discourse on psychedelic substances, a consistent finding is reported: A majority of users report profound personal meaning from their experiences. This pioneering study in Sweden, a nation renowned for its strict drug policies, sought to quantify the extent of reported meaningfulness among Swedish psychedelic users. Results revealed that a majority...
Journal of Psychoactive Drugs November 6, 2024 Aleksandra Barstowe, Petri Kajonius 8 citations
Psychedelic-assisted therapy is becoming increasingly acknowledged as an effective therapeutic intervention for various psychiatric illnesses. However, the evaluation of masking success is rarely reported in trials. The objective of the present systematic review was to evaluate placebo-control and masking in studies exploring psychedelic-assisted therapy. Nine (k = 9) studies dating between...
Scientific Reports May 3, 2024 David Sjöström, Emma Claesdotter-Knutsson, Petri Kajonius 16 citations
Interest in psychedelics is increasing due to the potential for improved mental health and quality of life. However, adverse effects on mental health are still a concern. Personality traits have been suggested to both influence the psychedelic experience and mental health, and even be changed by psychedelic use. The present study describes for the first time a national sample of Swedish...
December 31, 2023 Petri Kajonius, David Sjöström 1 citation preprint
In the midst of burgeoning research and societal debate regarding the impact of psychedelics on well-being, one key statistic stands out: Most users rate the psychedelic experience as one of the most meaningful in life. The present study aimed to investigate this using a questionnaire for the first time among Swedish psychedelic users. Results: The results showed that 58% regarded the...
Research Square December 13, 2023 David Sjöström, Emma Claesdotter-Knutsson, Petri Kajonius
Abstract Interest in psychedelics is increasing due to potential for improved mental health and quality of life. However, adverse effects on mental health are still a concern. Personality traits have been suggested to both influence the psychedelic experience and mental health, and even be changed by psychedelic use. The present study describes for the first time a national sample of Swedish...
Journal of Consciousness Studies June 1, 2022 Lena Lindström, Petri Kajonius, Etzel Cardeña 25 citations
In this study, we investigate the phenomenology of selftranscendent experiences, in which the usual sense of self is lost. Based on a taxonomy of nine aspects of self and three types of content of consciousness, we compare ten accounts of such experiences acquired through in-depth interviews. Sense of separateness and identification with body and narrative self were reported as lost in all of...