After Queen Elizabeth II’s death on September 8, 2020 at the age of 96, her cause of death was revealed by the National Records of Shortland.
The National Records of Scotland released the registration of the queen’s death on Thursday, September 29 2022. The document that was shared by royal reporter Omid Scobie on twitter, revealed that Elizabeth died at 3:10 p.m. local time. Her cause of death is listed as “old age,” while her occupation is cited as “Her Majesty The Queen.”
However the Guardian reported that “Listing old age as a cause of death for the Queen is misleading“, citing that, ” A broad coalition of gerontologists and ageing and human rights groups strongly object to the use of old age or ageing as a diagnostic factor because it legitimises and magnifies ageism, bolsters the false claims of the anti-ageing industry, obscures the multiple causes of later-life ill health, and detracts from treatment and prevention. Although old age is a risk factor for many diseases, it is heterogeneous, with individual variation and many positive associations, such as subjective wellbeing. Its use as a cause of death is inaccurate and misleading.”
See clear copy of Queen Elizabeth II’s death certificate below:

On the other hand, Lifeline reported the leading cause of deaths among the elderly in accordance to Centers for Disease Control and Prevention (CDC) which uses death certificates to track these conditions.
“In 2019 the the leading caused of death for people ages 65 to 74 were cancer, heart disease, chronic lung diseases, diseases that affect blood flow to the brain (cerebrovascular diseases), and diabetes. While 75- to 84-year-olds, the causes are the same except for diabetes, which was bumped to number six by Alzheimer’s disease. After age 85, heart disease moves into the number one spot, followed by cancer, Alzheimer’s disease, cerebrovascular diseases, and lung diseases. But in 2020, the pandemic brought with it a new disease, one that impacted all age groups, but especially older adults.” Lifeline Reported

Queen Elizabeth’s last public engagement was with new UK PM Liz Truss. London, Sep 9 Queen Elizabeth II made her final appearance just two days before her death when she met British Prime Minister Liz Truss and asked her to form a new government.