Stein Harald Johnsen

Stein Harald Johnsen is an Associate Professor at the Department of Clinical Medicine of UiT The Arctic University of Norway, Tromsø. His research spans neurology, cardiology, and public health, with a focus on stroke epidemiology, Alzheimer's disease, and atherosclerosis.

• Key projects: Acute stroke treatment - TWIST, Carotid atherosclerosis, Pre-hospital thrombolysis, Stroke epidemiology
• Collaboration: Member of the Brain and Circulation Research Group

Research Interests: Johnsen investigates the interplay between vascular risk factors (e.g., obesity, inflammation) and neurodegenerative diseases (e.g., Alzheimer’s). He employs longitudinal population data (e.g., Tromsø Study, PROG-IMT consortium) to analyze predictive biomarkers for stroke and cognitive decline. His work includes methodological advances in verbal fluency analysis for early Alzheimer’s detection and public health studies in Sub-Saharan Africa on stroke/myocardial infarction awareness.

Recent Publications: His 2025–2020 articles highlight cross-disciplinary themes: epidemiological trends in stroke, amyloid pathology in cognitive decline, and dietary/nutritional interventions for thromboembolism. Collaborative work emphasizes cardiovascular-neurological links (e.g., C-reactive protein, interleukin-6 as predictors of atherosclerosis progression).

Labs & Teams: He contributes to the Tromsø Study and the PROG-IMT consortium, integrating clinical, imaging, and biochemical data to advance stroke and dementia research.