The Hidden Toll: How Many People Die from Alzheimer’s and Why It’s Underreported

Alzheimer’s disease is far more deadly than most people realize—it may contribute to as many deaths in the United States as heart disease or cancer, yet it is often not listed as the official cause of death on certificates. This happens because the final cause is frequently something like pneumonia or a fall, even though Alzheimer’s was the underlying reason. Understanding this hidden burden can help you advocate for better care and recognition, and there are concrete steps you can take to ensure your loved one’s story is accurately documented.

Key points

• Alzheimer’s is a leading cause of death in the U.S., but it is often underreported on death certificates because the immediate cause (like pneumonia) is listed instead.
• Deaths from Alzheimer’s rose 89% between 2000 and 2014, while heart disease deaths dropped 14%.
• The disease kills by destroying the brain’s ability to control basic functions like swallowing and breathing, leading to infections or malnutrition.
• Hospice care can provide comfort and support in the final stage; don’t wait until the very end to ask about it.
• You can advocate for accurate death certificate reporting by asking the doctor to list Alzheimer’s as the underlying cause.
• Autopsy studies confirm Alzheimer’s in about 90% of clinically diagnosed cases, providing closure and research data.

The Real Death Toll: Alzheimer’s Is a Leading Killer

Alzheimer’s disease is not just a memory disorder—it is a progressive, fatal brain disease that eventually destroys the ability to swallow, breathe independently, and fight off infections. Research suggests that Alzheimer’s may contribute to close to as many deaths in the United States as heart disease or cancer, yet official death certificates often list other causes. For example, a 2014 study published in Neurology found that after an average of eight years, more than one-third of all deaths in people age 75 and older were attributable to Alzheimer’s disease, translating to an estimated 503,400 deaths in 2010—five to six times higher than the 83,494 reported by the Centers for Disease Control and Prevention (CDC) that year.

Why Alzheimer’s Is Underreported on Death Certificates

The underreporting happens because Alzheimer’s is a slow, degenerative disease that often leads to a final event—like pneumonia, a urinary tract infection, or a fall—that is listed as the immediate cause of death. For instance, a person with late-stage Alzheimer’s may develop aspiration pneumonia because they can no longer swallow safely, and the death certificate will say 'pneumonia' rather than 'Alzheimer’s disease.' Additionally, clinicians may not always recognize Alzheimer’s as the underlying cause, especially if the person had other health conditions. This means that the true number of deaths from Alzheimer’s is likely much higher than official statistics show, and the burden of the disease is underestimated.

How Alzheimer’s Actually Leads to Death

In the final stage of Alzheimer’s, the brain has shrunk significantly, and the person loses the ability to perform basic functions like swallowing, walking, and controlling bladder and bowel movements. The body slowly shuts down: the person may sleep more, eat and drink less, and eventually enter a state of ketosis, which can dull pain and create a sense of euphoria. The most common immediate causes of death are infections (like pneumonia), dehydration, malnutrition, or complications from falls. Hospice care can help manage symptoms and provide comfort, but the underlying disease is what ultimately causes the decline.

General caregiving information, not medical advice. Check medications and major care changes with your clinician.

Discuss with your clinician

Ask your doctor: 'Is my loved one eligible for hospice care based on their current stage of Alzheimer’s?'

Ask: 'What signs should I watch for that indicate the final stage is approaching, and how can I manage them at home?'

Ask: 'If my loved one develops pneumonia or another infection, what are the options for treatment versus comfort care?'

Ask: 'How can I ensure that Alzheimer’s is listed as the underlying cause of death on the death certificate?'

Ask: 'Are there any clinical trials or research studies that could help us understand the progression better?'

Related guides

• coordinating dementia care from diagnosis to end of life
• Hospice care quality for dementia
• Proving disability for dementia or Alzheimer's
• Treatable illnesses causing death in Alzheimer's
• End-of-Life Symptoms in Alzheimer’s: What to Expect in the Final Days
• Ambiguous loss: the unique grief of dementia caregiving
• adapting dental care as dementia progresses
• Where to Find Ongoing Support and Education for Dementia Caregiving

Sources

• PubMed
• PMC
• Alzheimer's Association
• Am Academy of Neurology
• Mayo Clinic
• act.alz.org
• All Home Care Matters
• The Dementia Doctor
• Hospice Nurse Julie