Walter Osika

ORCID: 0000-0002-1583-7319
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About
Contact & Profiles
Research Areas
  • Mindfulness and Compassion Interventions
  • Psychedelics and Drug Studies
  • Cardiovascular Health and Disease Prevention
  • Cardiovascular Disease and Adiposity
  • Heart Rate Variability and Autonomic Control
  • Stress Responses and Cortisol
  • Child and Adolescent Psychosocial and Emotional Development
  • COVID-19 and Mental Health
  • Biochemical Analysis and Sensing Techniques
  • Blood Pressure and Hypertension Studies
  • Chemical synthesis and alkaloids
  • Urban Green Space and Health
  • Health disparities and outcomes
  • Healthcare professionals’ stress and burnout
  • Social and Educational Sciences
  • Behavioral Health and Interventions
  • Neurotransmitter Receptor Influence on Behavior
  • Resilience and Mental Health
  • Cardiac Health and Mental Health
  • Obesity, Physical Activity, Diet
  • Music Therapy and Health
  • Workplace Health and Well-being
  • Health, psychology, and well-being
  • Environmental Education and Sustainability
  • Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes

Karolinska Institutet
2014-2024

Stockholm Health Care Services
2019-2024

Centre for European Policy Studies
2024

Stockholm University
2009-2017

University of Gothenburg
2006-2013

Örebro University Hospital
2006-2010

University College London
2010

University of Edinburgh
2010

Centre for Health Equity Studies
2010

London School of Hygiene & Tropical Medicine
2010

There is an urgent need to explore the impact of COVID-19 pandemic on adolescent mental health and behaviours. To date, there are no such studies Swedish adolescents. As emerged in middle our ongoing 2-year follow-up examination Study Adolescence Resilience Stress, we had unique opportunity use corona outbreak as a 'natural experiment' study 15-year-old adolescents Sweden.Adolescents (baseline age 13.6±0.4 years) were recruited from schools western Sweden (during kept open for those under 16...

10.1177/14034948211021724 article EN cc-by Scandinavian Journal of Public Health 2021-06-08

Climate change is an increasing threat to sustainable development worldwide. However, the dominant incremental policy approaches have not generated action at anywhere near rate, scale or depth that needed. This largely due fact climate has historically been framed as a purely external, technical challenge. There urgent need for more integral understanding links internal and external (collective systems) support transformation. related knowledge scarce fragmented across disciplines. study...

10.1016/j.gloenvcha.2021.102373 article EN cc-by Global Environmental Change 2021-10-09

Previous studies have investigated challenging, difficult, or distressing classic psychedelic experiences, but little is known about the prevalence and associations of such experiences. Using nationally representative data US adult population (N = 2822), this study examined experiences using psychedelics, in a subsample respondents who reported lifetime use (n 613). Of 613 use, majority them (59.1 %) had never experience psychedelic, 8.9 % functional impairment that lasted longer than one...

10.1016/j.jad.2023.01.073 article EN cc-by Journal of Affective Disorders 2023-01-30

Despite mounting reports about the negative effects of chronic occupational stress on cognitive and emotional functions, underlying mechanisms are unknown. Recent findings from structural MRI raise question whether this condition could be associated with a functional uncoupling limbic networks an impaired modulation stress. To address this, 40 subjects suffering burnout symptoms attributed to 70 controls were investigated using resting state MRI. The participants' ability up- regulate,...

10.1371/journal.pone.0104550 article EN cc-by PLoS ONE 2014-09-03

Importance While psychedelic-assisted therapy has shown promise in the treatment of certain psychiatric disorders, little is known about potential risk psychotic or manic symptoms following naturalistic psychedelic use, especially among adolescents. Objective To investigate associations between use and self-reported adolescents using a genetically informative design. Design, Setting, Participants This study included large sample adolescent twins (assessed at age 15, 18, 24 years) born July...

10.1001/jamapsychiatry.2024.0047 article EN cc-by JAMA Psychiatry 2024-03-13

Childhood obesity confers an increased risk of vascular changes and adult cardiovascular disease. Using a high-resolution ultrasound technique that enables separation intimal medial layers, we examined the thickness (IT) intimal-medial (IMT) radial (RA) dorsal pedal (DPA) arteries pulse wave velocity (PWV) in overweight/obese children adolescents healthy subjects.IT IMT RA DPA PWV were measured 33 obese (13.9+/-1.6 years) 18 matched lean controls (14.3+/-2.2). Increased IT was found group,...

10.1111/j.1475-097x.2008.00806.x article EN Clinical Physiology and Functional Imaging 2008-05-12

Aims: Major depressive disorders are common, with substantial impact on individuals/society. Brief scales for depression severity, based a small number of characteristics all which necessary diagnosis, have been recommended in self-reported versions clinical work or research when aiming to quickly and accurately measure depression. We examined psychometric properties brief 6-item version the Symptom Checklist (SCL), core scale (SCL-CD 6 ) aimed identify cut-point epidemiological research....

10.1177/1403494813500591 article EN Scandinavian Journal of Public Health 2013-08-27

The present study investigates the cerebral effects of chronic occupational stress and its possible reversibility. Forty-eight patients with exhaustion syndrome (29 women) 80 controls (47 underwent structural magnetic resonance imaging (MRI) neuropsychological testing. Forty-four participants (25 patients, 19 controls) also completed a second MRI scan after 1–2 years. Only received cognitive therapy. stressed group at intake had reduced thickness in right prefrontal cortex (PFC) left...

10.1093/cercor/bhw413 article EN Cerebral Cortex 2017-01-20

Using new, very high-resolution ultrasound biomicroscopy, we examined the thickness of artificial layers silicone and intima (IT) radial anterior tibial arteries in healthy subjects patients with vascular disease.Silicone varying thicknesses mesenteric artery specimens obtained from 18 undergoing colectomy were measured by both biomicroscopy (55 MHz) morphometry. There was high correlation (r>0.9; P<0.0001) between IT area versus biomicroscopy. In 90 (aged 10 years), arterial intima-media...

10.1161/01.atv.0000256468.95403.6f article EN Arteriosclerosis Thrombosis and Vascular Biology 2006-12-29

10.1007/bf03004176 article EN International Journal of Behavioral Medicine 2007-06-01

Background We prospectively and longitudinally determined the effects of childhood obesity on arterial stiffening vascular wall changes. Changes in stiffness measured as pulse wave velocity (PWV) morphology radial (RA) dorsal pedal arteries (DPA) were examined obese adolescents compared to lean subjects a 5-year follow-up study. Methodology/Principal Findings A total 28 14 controls participated both baseline (14 years old) studies. PWV was by tonometer (SphygmoCor®) recorded at RA carotid...

10.1371/journal.pone.0057454 article EN cc-by PLoS ONE 2013-02-22

Abstract The objective of the current study was to investigate associations between lifetime classic psychedelic use and cardiometabolic diseases. Using data from National Survey on Drug Use Health (2005–2014), present examined two types disease: heart disease diabetes. Respondents who reported having tried a at least once in their had lower odds past year (adjusted ratio (aOR) = 0.77 (0.65–0.92), p .006) diabetes 0.88 (0.78–0.99), .036). Classic might be beneficial for health, but more...

10.1038/s41598-021-93787-4 article EN cc-by Scientific Reports 2021-07-13

Artificial Intelligence (AI) has the potential to greatly improve delivery of healthcare and other services that advance population health wellbeing. However, use AI in also brings risks may cause unintended harm. To guide future developments AI, High-Level Expert Group on set up by European Commission (EC), recently published ethics guidelines for what it terms “trustworthy” AI. These are aimed at a variety stakeholders, especially guiding practitioners toward more ethical robust...

10.3389/fhumd.2021.673104 article EN cc-by Frontiers in Human Dynamics 2021-07-08

This article's main contributions are twofold: 1) to demonstrate how apply the general European Union's High-Level Expert Group's (EU HLEG) guidelines for trustworthy AI in practice domain of healthcare and 2) investigate research question what does "trustworthy AI" mean at time COVID-19 pandemic. To this end, we present results a post-hoc self-assessment evaluate trustworthiness an system predicting multiregional score conveying degree lung compromise patients, developed verified by...

10.1109/tts.2022.3195114 article EN cc-by-nc-nd IEEE Transactions on Technology and Society 2022-07-29

Responding effectively to climate change requires an understanding of what shapes people's individual and collective sense agency responsibility towards the future. It also transforming this into political engagement support systems change. Based on a national representative survey in Sweden (N = 1,237), research uses novel SenseMaker methodology look these matters. More specifically, order understand social institutional prerequisites that must be place develop inclusive responses, we...

10.1080/14693062.2022.2121254 article EN cc-by-nc-nd Climate Policy 2022-09-26

Recent research suggests that mindfulness, compassion, and self-compassion relate to inner transformative qualities/capacities intermediary factors can support increased pro-environmental behavior attitudes across individual, collective, organizational, system levels. However, current insights focus on the individual level, are restricted certain sustainability fields, wider experimental evidence is scarce contradictory. Our pilot study addresses this gap tests aforementioned proposition in...

10.1016/j.isci.2023.106191 article EN cc-by iScience 2023-02-24

Abstract Background Findings from contemporary clinical trials suggest that psychedelics are generally safe and may be effective in the treatment of various psychiatric disorders. However, less is known about risks associated with psychedelic use outside medically supervised contexts, particularly populations typically excluded participation trials. Methods Using a preregistered longitudinal observational research design purposive sample US residents between 18 50 years old ( N =21,990), we...

10.1017/s0033291725000716 article EN Psychological Medicine 2025-01-01

<h3>Objective</h3> Psychosocial adversity is a risk factor for cardiovascular disease (CVD) in adults. The authors assessed associations of reactive hyperaemia peripheral arterial tonometry (RH-PAT), measure endothelial function predictive CVD, with self-assessed psychological health among school children. <h3>Methods</h3> A total 248 healthy children (mean (SD) age 14.0 (1.0); 136 girls and 112 boys) underwent RH-PAT testing. They completed the Beck Youth Inventories (BYI) emotional social...

10.1136/adc.2008.152777 article EN Archives of Disease in Childhood 2009-10-11
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