Dementia Now Australia’s Leading Cause of Death: Experts Call for Prevention

The landscape of public health in Australia is shifting, with dementia now recognized as the leading cause of death, surpassing heart disease. This sobering milestone, highlighted in a recent letter published in the Australian and Latest Zealand Journal of Public Health, is prompting calls for a significant re-evaluation of preventative health strategies and increased investment in brain health initiatives. The data, drawn from the Australian Institute of Health and Welfare and the Australian Bureau of Statistics, underscores a growing public health crisis that demands urgent attention.

Currently, an estimated 446,500 Australians are living with dementia. Without substantial intervention, projections indicate this number will exceed one million by 2065. This isn’t simply a demographic inevitability, experts emphasize; a significant proportion of dementia cases are linked to modifiable risk factors, meaning proactive steps can be taken to mitigate the rising tide of the disease.

Understanding the Shifting Burden of Disease

For decades, heart disease held the position of Australia’s leading cause of death. The change reflects both successes in cardiovascular health – through preventative measures and improved treatments – and a parallel increase in the prevalence of dementia. This shift isn’t necessarily indicative of a steeper rise in dementia cases themselves, but rather a combined effect of improved longevity and a greater understanding of the disease’s impact. The Australian Institute of Health and Welfare estimated in 2024 that 425,000 Australians were living with dementia, equivalent to 16 people per 1,000 population. AIHW data provides a comprehensive overview of dementia statistics in Australia.

Modifiable Risk Factors: What We Can Control

While age, genetics, and family history play a role in dementia risk, a substantial portion – roughly 43% of cases in Australia – is attributable to modifiable risk factors. These include tobacco use, overweight and obesity, physical inactivity, high blood pressure in midlife, high blood plasma glucose, and impaired kidney function. Addressing these factors through public health initiatives and individual lifestyle changes represents a crucial opportunity for prevention. It’s important to note that these aren’t isolated risk factors; they often cluster together, and interventions targeting multiple factors simultaneously are likely to be most effective.

Beyond Prevention: The Need for Early Detection

The call for action extends beyond preventative measures to encompass early detection and intervention. Professor Tanya Buchanan, CEO of Dementia Australia, stresses that dementia is not an inevitable consequence of aging. “Whilst we cannot change getting older, genetics or family history, there are things we can do to reduce our risk,” she stated. Early diagnosis allows individuals and their families to access support services, plan for the future, and potentially benefit from emerging therapies. However, early detection remains a challenge, often hampered by a lack of awareness and stigma surrounding the disease.

A Gap in Public Health Strategy

Despite the growing burden of dementia, the disease has historically been largely absent from national preventative health strategies. The authors of the Australian and New Zealand Journal of Public Health letter argue that dementia prevention aligns well with the prevention of other chronic diseases, yet it hasn’t received comparable attention. This oversight needs to be addressed, they contend, through the integration of brain health into existing public health frameworks.

Calls for National Action and Targeted Support

Dementia Australia is advocating for a national brain health campaign, with a particular focus on reaching disadvantaged populations who may face greater barriers to accessing information and support. They are also urging the Federal Government to prioritize brain health as a core component of all preventative health strategies across the country. This includes funding for research, public awareness campaigns, and improved access to diagnostic and support services.

Adjunct Professor Terry Slevin, CEO of the Public Health Association of Australia, emphasizes the need for a fundamental shift in how Australia approaches dementia. “We can prevent roughly two in five dementia cases in Australia,” he notes. “Most of the things that support our physical health will also reduce risk of dementia.” This perspective underscores the potential for a broad-based public health approach that promotes overall well-being and simultaneously reduces the risk of dementia.

What’s Next: A Path Forward for Brain Health

The recognition of dementia as Australia’s leading cause of death is a pivotal moment. The next steps involve a concerted effort to translate awareness into action. This includes a comprehensive review of national preventative health strategies to incorporate brain health, increased investment in dementia research and support services, and the implementation of targeted public health campaigns. The Public Health Association of Australia, as publishers of the Australian and New Zealand Journal of Public Health, will likely play a key role in disseminating research and advocating for evidence-based policies. The journal’s open access format ensures that research findings are widely available to inform public health practice.

For individuals concerned about their risk of dementia, maintaining a healthy lifestyle – including regular physical activity, a balanced diet, and avoiding smoking – is paramount. It’s also crucial to stay mentally active and socially engaged. If you are experiencing memory problems or other cognitive changes, it’s important to consult with a qualified healthcare professional for assessment and support. Further information and support are available from Dementia Australia on their website dementia.org.au or by calling the National Dementia Helpline on 1800 100 500.