Dementia remains one of the most pressing health challenges across Europe and the world, with millions of new cases diagnosed annually. A new study offers a clear, actionable message: how well you manage your vascular health in midlife could buy you more than a decade of dementia-free living.
Published in Neurology Open Access, the research followed more than 12,000 participants over several decades. It found that people who maintained normal blood pressure, did not develop diabetes, and did not smoke from age 48 to 68 gained, on average, nearly 13 additional years without dementia compared to those with all three risk factors.
“Our findings argue that people need to actively avert these factors in midlife as a strategy for preserving brain health for more than a decade,” said senior investigator Josef Coresh, a professor at New York University’s Grossman School of Medicine.
Vascular health as a lever for brain ageing
The study’s authors defined good vascular health as the absence of diabetes, hypertension, and smoking. These three factors are already known to affect heart and blood vessel function, but their cumulative impact on cognitive decline is striking.
Participants with all three risk factors faced nearly three times the hazard of developing dementia compared to those with none. At age 55, individuals with zero risk factors could expect to live an average of 30 years without dementia. That figure dropped to 26 years with one risk factor, 21 years with two, and just over 17 years with all three.
The gap translates into a meaningful difference in quality of life. “People with no risk factors lived roughly 13 years longer without cognitive impairment than those with all three conditions,” the authors noted.
Sex differences also emerged. Women generally lived more years dementia-free than men. Among those with three risk factors, women averaged 18 years without dementia, compared to 16 years for men.
The findings align with a growing body of research on modifiable risk factors. A separate study earlier this year linked early sugar restriction to lower dementia risk decades later, reinforcing the idea that lifestyle choices in earlier life have long-term neurological consequences.
For European health systems, the implications are significant. With ageing populations across the continent, dementia care costs are projected to rise sharply. Preventive strategies that target midlife vascular health could ease the burden on national health services and improve the wellbeing of millions.
“Hopefully, these results will encourage people to stop smoking and watch their vascular health closely from age 48 on,” Coresh said.
The study adds to a growing list of preventive measures. For instance, a screening programme in the Basque Country has shown how early detection can dramatically reduce mortality from another age-related disease. Similarly, understanding the role of vascular health in dementia could lead to targeted public health campaigns.
While the study is observational and cannot prove causation, the strength of the association and the biological plausibility make a compelling case for action. As Coresh emphasised, the message is simple: midlife is not too late to make a difference.
