- A subarachnoid haemorrhage (SAH) occurs when a bulge in a weakened artery, called an aneurysm, bursts in the brain.
- The chances of surviving are only about 50%, and victims who live often face a lifetime of disability.
- Researchers in Korea investigated 426 cases of SAH between 2002 and 2004.
- Patients were compared with a group of 426 people matched for age and sex who had not experienced a brain bleed.
More top news
A care worker and special constable has been jailed for attempted murder after lacing her colleagues' drinks with bleach.
A woman was attacked and killed by fire ants as she sat planning the funeral of her mother, who died the day before.
A group of primary school children witnessed a 17-year-old boy getting stabbed in the street, according to reports.