Gina Johnson
Dying peacefully in one's sleep is often considered a desirable way to pass away, especially in old age. While it is true that most people who die in their sleep are elderly, it is important to understand that ageing itself is not what causes death. Instead, older people are more likely to have underlying health conditions that increase the risk of nocturnal death. These conditions include heart disease, cancer, stroke, lung failure, and diabetes. Additionally, older people may have swallowing difficulties, leading to an increased risk of inhaling food or fluids, developing pneumonia, and eventually dying. While dying in one's sleep is often associated with peace and a lack of pain, in some cases, people may briefly wake up and experience pain or distress before passing away.
| Characteristics | Values |
|---|---|
| Official cause of death | "Old age" is not listed as a cause of death in the American ICD-10-CM. In the UK, "old age" was listed until the death of Queen Elizabeth II in 2022, when it was replaced with "aging-associated biological decline in intrinsic capacity." |
| Common causes | Heart disease, cancer, and stroke are responsible for most deaths among seniors. Other causes include heart attack, respiratory failure, organ failure, blood clots, and pneumonia. |
| Risk factors | Old people become more vulnerable to diseases and health conditions due to changes in their bodies, such as shortened telomeres, hormonal changes, and decreased intrinsic capacity. |
| Prevention | Understanding the aging process and promoting quality of life in the senior years can help prevent problems like ageism and forced retirement. |
| Signs | Chest pain and sweating linked to sudden cardiac arrest. Other signs may include Cheyne-Stokes respiration, irregular agonal breathing, or symptoms of specific conditions like diabetes or epilepsy. |
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What You'll Learn
Old age is not a cause of death
It is a common misconception that people can die in their sleep simply because of their old age. However, this is not the case. While it is true that older people are more likely to die as a result of common illnesses, such as pneumonia, that a younger person may be able to survive, ageing itself does not cause death.
In 1948, the World Health Organization began updating the International Classification of Diseases, which is now in its 11th edition. In the American version (the ICD-10-CM), ""old age" is not listed as a possible cause of death. This is because, as people age, their bodies undergo changes that make them more vulnerable to diseases and health conditions. For example, older people are likely to have shorter telomeres, which protect DNA from damage, and so their DNA may experience more damage, leading to general frailty. They may also experience a decrease or increase in certain hormones, which can cause a host of issues, such as an increase in insulin resistance, a decrease in bone density, and a decline in metabolism.
These changes lower a person's intrinsic capacity, which refers to the reserve of physical and mental abilities to ward off infections, fight diseases, and take care of themselves. As a person ages, their intrinsic capacity lowers, and they become more frail and susceptible to diseases and injuries. This is known as "age-associated biological decline in intrinsic capacity" and is the reason why older people are more likely to die from diseases or injuries.
When an older person dies peacefully in their sleep, it is often due to a stroke, heart attack, or blood clot, all of which can be fatal because elderly people have fewer physical reserves. Therefore, while ageing may be a risk factor for death, it is not the direct cause. Instead, it is the changes that occur in the body as a result of ageing that contribute to an older person's death.
The use of ""old age" as a cause of death has been criticised for being ageist and contributing to stigmas around caring for the elderly. It is important to understand the specific changes that occur during ageing and how they impact an older person's vulnerability to diseases and injuries. This can help prevent ageism and promote a better quality of life for seniors.
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Heart, lung, and brain issues are common causes
While "old age" was previously listed as a cause of death, it is no longer considered a legitimate cause. Instead, it has been replaced with "age-associated biological decline in intrinsic capacity", reflecting the natural changes and increased vulnerability that occur with ageing.
One of the most common causes of death during sleep is sudden cardiac arrest, which occurs when the heart abruptly stops beating. This can be due to underlying conditions such as congestive heart failure, abnormal heart rhythms (arrhythmias), or Long QT Syndrome (LQTS). These issues can lead to respiratory arrest, where the lungs fail to function properly, causing a critical imbalance in oxygen and carbon dioxide levels in the body.
Additionally, strokes, which are more likely to occur at night due to changes in blood pressure, can impact the brainstem, compromising breathing, eye-opening, muscle control, and consciousness. Untreated obstructive sleep apnea can also increase the chances of a stroke, as it affects existing risk factors such as high blood pressure and heart disease.
Other heart-related issues that can contribute to death during sleep include heart attacks, which can cause pain and distress, and terminal illnesses such as lung failure. Obstructive sleep apnea can further increase the risk of sudden cardiac death by disrupting breathing and affecting oxygen levels.
While dying in one's sleep is often associated with peace and a lack of pain, it is important to recognize that it is usually a result of common health issues related to the heart, lungs, or brain.
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Strokes, heart attacks, and blood clots are common causes
It is a common misconception that people can die of "old age". In reality, the phrase "dying of old age" is used to describe a collection of different causes of death. Strokes, heart attacks, and blood clots are common causes of death in elderly people who die in their sleep.
As people age, their bodies become more vulnerable to disease and health conditions. Natural changes in the body lower their intrinsic capacity, making them more susceptible to serious health issues. For example, older people are more likely to have shorter telomeres, which protect DNA from damage, making them more susceptible to damage that leads to general frailty.
Strokes occur when something cuts off the blood supply to the brain, preventing it from getting enough blood flow. This can happen due to a blocked blood vessel or bleeding in the brain. Ischemic strokes are caused by blood clots blocking a blood vessel connected to the brain, while hemorrhagic strokes happen when a blood vessel in the brain breaks or tears. Strokes are the second-leading cause of death worldwide and can certainly occur during sleep.
Heart attacks, or myocardial infarctions, can range from minor events to catastrophic blockages that lead to cardiac arrest and death. A massive heart attack can reduce blood flow to the part of the brain that controls breathing, causing respiratory arrest. Heart attacks are among the most common causes of nocturnal death, with about 22% occurring between 10:00 pm and 6:00 am.
Blood clots can also lead to fatal strokes if they block a blood vessel connected to the brain. High blood pressure or hypertension may increase the risk of clots. If a stroke impacts the brain stem, it can affect breathing, eye-opening, muscle control, and consciousness, potentially leading to death during sleep.
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Terminal conditions increase the risk
Terminal conditions significantly increase the risk of death among the elderly. While ageing is not a cause of death, it is a risk factor that makes diseases and injuries more dangerous. As people age, their bodies undergo natural changes that make them more susceptible to diseases and health conditions. This increased vulnerability, coupled with terminal conditions, can lead to a higher risk of death.
Terminal illnesses or advanced old age can cause various symptoms that indicate death may be near. One common symptom is a significant decrease in talking and physical activity. The person may sleep for long periods and resist any movement. They may also lose interest in eating and drinking, experiencing difficulties with swallowing, which can lead to choking or coughing. These symptoms are normal as the body's physical systems slow down.
As a person nears the end of their life, they may experience terminal restlessness or agitation, with periods of disquiet. They may also have sensory changes, misperceiving the world around them. For example, they might hear the wind blowing but think someone is crying or see a lamp but believe it is a person. These sensory illusions can be comforting or troubling.
Additionally, skin changes can occur, such as a purplish, pale, gray, or blotchy discolouration, especially on the knees, feet, buttocks, ears, and hands. Open wounds may also appear as the skin and other organs begin to fail. These signs often indicate that death is imminent, usually within days or hours. While it is challenging to predict what will happen, understanding these possibilities can help prepare caregivers and loved ones for the end of life.
Terminal conditions, coupled with the natural physical decline associated with ageing, create a perfect storm that increases the risk of death among the elderly. While it is never easy to witness a loved one's health deteriorate, recognising these signs and symptoms can help provide comfort, support, and palliative care to make their final days as peaceful as possible.
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Respiratory issues can cause death during sleep
It is not uncommon for elderly people to pass away in their sleep. While it is often referred to as "dying of old age", this phrase is misleading as it is not a cause of death. Instead, the vulnerability of old age can lead to serious health issues, which can then result in death during sleep. One of the main causes of death during sleep in elderly people is respiratory issues.
In addition to sleep apnea, other respiratory issues can also contribute to death during sleep. For example, conditions such as heart failure or cancer can cause breathing difficulties, making it hard for the person to get enough air. As the body becomes more exhausted due to critical health conditions, death during sleep can occur.
Furthermore, the natural aging process can lead to hormonal changes that decrease bone density and muscle mass. This increased frailty means that elderly people are more susceptible to the effects of respiratory issues. They may not have the physical reserves to withstand the stress caused by breathing difficulties, increasing the likelihood of death during sleep.
The phrase "dying of old age" does not accurately reflect the complex nature of death in elderly individuals. Instead, it is important to understand the specific health issues that contribute to death during sleep, such as respiratory problems, and to provide appropriate medical care and support to prevent such incidents.
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Frequently asked questions
People don't die of old age. Instead, as people age, they become more vulnerable to diseases and health conditions that can lead to death. Death during sleep depends on the cause, and some people die peacefully without feeling pain or becoming aware.
Causes of death during sleep include heart, lung, or brain issues. For example, congestive heart failure, stroke, lung failure, and brainstem injuries.
Signs that someone might die in their sleep include chest pain and sweating linked to sudden cardiac arrest. Other signs could include irregular breathing patterns, such as cycles of deep, rapid breaths followed by periods of shallow breathing or pauses.
Certain underlying conditions can increase the risk of dying in one's sleep, such as obstructive sleep apnea (OSA). Other risk factors include epilepsy, heart disease, and type 1 diabetes.
