More can be done to prevent common type of stroke

Embargoed until: Publicly released: 2025-05-23 18:30

Australia; New Zealand; International

Photo by Jan Krivec on Unsplash

Subarachnoid haemorrhage, the third most common type of stroke, accounting for 5-10% of all cases, could be drastically reduced worldwide through health and lifestyle changes, according to NZ, Australian and international researchers. The team investigated the global burden of subarachnoid haemorrhage from 1990 to 2021, and found while the burden has more than halved relative to the world's population, the absolute number of subarachnoid haemorrhages are increasing. The researchers say 70% of the burden of this type of stroke can be attributed to risk factors we can change such as smoking and high blood pressure, so good public health planning and resource allocation could further reduce the risk around the world.

Media release

From: JAMA

About The Study: Although the global age-standardized burden rates of subarachnoid hemorrhage (SAH) more than halved over the last 3 decades, SAH remained one of the most common cardiovascular and neurological causes of death and disabilities in the world, with increasing absolute case numbers. These findings suggest evidence for the potential health benefits of proactive public health planning and resource allocation toward the prevention of SAH. Nontraumatic SAH represents the third most common stroke type after ischemic stroke and intracerebral hemorrhage, accounting for 5% to 10% of all strokes.

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Journal/
conference: JAMA Neurology

Research:Paper

Organisation/s: University of Auckland, The University of Sydney, The University of New South Wales, University of Technology Sydney (UTS), The Australian National University, Monash University, The University of Queensland, Flinders University, Curtin University, La Trobe University, Charles Darwin University, Federation University, Charles Sturt University, University of Canberra, University of New England, James Cook University, Torrens University, University of Western Australia, University of Tasmania, Queensland University of Technology, University of Melbourne, Western Sydney University, Baker Heart and Diabetes Institute, Griffith University, George Institute

Funder: The Global Burden of Disease Study 2021 was funded by the Bill & Melinda Gates Foundation.

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