- 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
Artists have retold the stories of "imponderable brutality and evil" in works created to remember the Holocaust.
ITV News joins 85-year-old Holocaust survivor Zigi Shipper on his emotional return to the Auschwitz death camp.
Bradford City co-chairman Mark Lawn says he would like to face Manchester United in the FA Cup for his wife Yvonne who is battling cancer.