The cause of Queen Elizabeth II's death has been confirmed as 'old age'. It is very unusual for this to be given as a sole official cause of death, but there are some circumstances where it is acceptable.
The death certificate, which has been released by the National Records of Scotland, records the Queen died at 3.10pm on September 8 in Balmoral Castle, at the age of 96. Douglas Glass, the Queen's doctor in Scotland, certified the death.
From a medical perspective, old age alone does not cause death. But complications arising from conditions that come with aging are often fatal. Doctors do not always know the exact cause of death in an elderly person, because they may have conditions that subtly overlap.