Dementia Remains Leading Cause of Death in Australia

The condition accounted for more than 10 percent of all registered deaths throughout the country in 2025.

Updated on Oct. 27, 2026 in Alzheimer’s

Dementia Remains Leading Cause of Death in Australia

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In 2025, dementia was the leading cause of death in Australia, resulting in 19,019 fatalities. This figure represents 10.1 percent of the 188,421 total deaths recorded by the Australian Bureau of Statistics that year.

Why it matters

The rise in dementia deaths highlights a significant public health challenge as the condition continues to outpace other major causes of mortality like ischaemic heart disease. This trend underscores the increasing impact of age-related diseases on national health outcomes.

Dementia accounted for 10.1 percent of all deaths in 2025, with an age-standardized mortality rate of 495.5 per 100,000 people. By comparison, ischaemic heart diseases caused 16,228 deaths, while accidental falls resulted in 5,519 fatalities.

The players

Australian Bureau of Statistics

This is the national statistical agency of Australia responsible for producing official data on mortality and population health trends.

The details

Data from the Australian Bureau of Statistics show that dementia deaths increased from 18,291 in 2024 to 19,019 in 2025. This persistent increase establishes the condition as the primary cause of mortality in Australia, significantly ahead of influenza and pneumonia, which caused 4,382 deaths.

Official mortality records have been kept in Australia since 1968.
A baseline for accidental fall deaths was established in 2016.
Dementia deaths totalled 18,291 in 2024.
In 2025, dementia deaths exceeded 10 percent of all registered deaths.

Health Landscape

The current mortality data follows a trend established since the 1968 commencement of official mortality records in Australia. This analysis provides the long-term context necessary to understand how dementia has evolved into the country's primary cause of death.

The prevalence of dementia as a leading cause of death highlights the importance of early diagnosis and the need for proactive long-term care planning. Families are encouraged to consult with healthcare providers to understand available support services and manage health routines effectively.

The takeaway

The data confirms that dementia remains the most significant contributor to mortality rates in the country. Individuals and families should prioritise early screening and discussions with medical professionals to navigate the complexities of long-term cognitive health.