Up to 45 percent of dementia cases could be preventable through lifestyle changes and structural interventions, according to leading health organizations.
A shift in medical thinking is underway, with health organizations emphasizing that nearly half of all dementia cases could be prevented or significantly delayed through targeted preventative measures. Both the Austrian Society for Neurology (ÖGN) and Public Health Wales released comprehensive reports this week supporting this claim, challenging the long-held belief that cognitive decline is inevitable. This finding is particularly crucial as global populations age and the prevalence of dementia rises.
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Austrian Neurologists: “We Have the Knowledge”
On Wednesday, the ÖGN publicly called for a clear course correction. “Up to 45 percent of all dementias and 80 percent of all strokes are avoidable,” explained incoming President Julia Ferrari. The key lies in lifestyle: quitting smoking, adopting a Mediterranean diet, engaging in at least 150 minutes of exercise per week, and maintaining strict weight control. Alcohol also has a toxic effect on brain cells, she added.
The economic impact of neurological diseases is substantial. Neurological conditions cost approximately 800 billion euros annually across Europe. Outgoing President Jörg Weber highlighted an often-overlooked point: “Vaccinations against brain and meningeal infections are also part of neuro-prevention.”
Wales Report: Global Examples Lead the Way
Almost simultaneously, Public Health Wales published an international report. It analyzed successful prevention strategies from countries like Finland, Japan, and Uruguay. “Dementia is not an inevitable part of aging,” emphasized expert Mariana Dyakova.
The report goes further, arguing that individual behavioral changes are not enough. Structural measures at the population level are necessary. The authors call for tax incentives for healthy eating, stricter tobacco controls, and legal restrictions on the marketing of unhealthy products.
The 14 Levers for a Healthy Brain
Both initiatives are based on the updated model from the renowned Lancet Commission. It now identifies 14 modifiable risk factors throughout life.
In younger years, a low level of education poses a particular risk – it prevents the development of a protective “cognitive reserve.” In middle age, high blood pressure, obesity, excessive alcohol consumption, and head injuries come into focus. Newly added to the list are elevated LDL cholesterol levels and untreated hearing loss.
In older age, smoking, depression, social isolation, lack of exercise, diabetes, and air pollution are contributing factors. Another new factor is untreated vision impairment. Timely correction of vision and hearing problems measurably slows cognitive decline.
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Demographic Pressure Makes Prevention Urgent
The urgency is underscored by the numbers. Globally, the number of people with dementia could nearly triple to 153 million by 2050. In Austria, approximately 170,000 people are currently affected – with a sharply increasing trend.
The strain on the healthcare system is already significant. 20,000 people in Austria suffer a stroke each year, statistically every 27 minutes. Delaying the onset of the disease by just a few years would drastically reduce the number of people needing care.
Medicine is increasingly relying on technological assistance. In Styria, AI tools are already being used on a large scale. They help doctors identify risks earlier and implement preventative measures more effectively.
From Repairing to Preventing
These appeals mark a turning point. Neurology is moving away from pure repair medicine towards active health promotion. Programs for multimodal lifestyle changes, such as the Scandinavian FINGERS model, could soon become standard medical practice. The shift towards preventative care could significantly improve public health outcomes.
For policymakers, this means a paradigm shift. Investments in clean air, widespread education, and preventative care must now be seen as cost-saving measures for the health budget. The tools to avert the dementia crisis are available – they simply need to be used consistently.
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