Key Health Factors May Delay Dementia by Up to 13 Years, Study Finds
Avoiding high blood pressure, diabetes, and smoking in middle age could extend dementia-free years, according to new research.
A recent study published in the journal Neurology Open Access suggests that avoiding certain health risk factors in middle age can significantly delay the onset of dementia. Conducted by researchers at NYU Langone Health, the study tracked approximately 12,400 middle-aged participants over 26 years, revealing that managing three key risk factors—high blood pressure, diabetes, and smoking—could extend dementia-free life by up to 13 years.
Research Highlights Vascular Health
The study highlights the critical role of vascular health in preventing cognitive decline. Participants who managed to avoid these three risk factors enjoyed an estimated 30 years without dementia, compared to just 18 years for those who did not. The study's average participant age at the start was 56, with a diverse group including over half women and about 25% Black individuals.
Dr. Josef Coresh, director of the Optimal Aging Institute at NYU Langone Health and a study author, emphasized the importance of midlife health habits on long-term cognitive health. "We found if you had more risk factors, you had an elevated risk of both dementia and mortality," Coresh noted.
Expert Opinions and Broader Implications
Experts like Dr. Cynthia Carlsson, a geriatrician at University of Wisconsin Health, who was not involved in the research, concur with the findings, stating that healthy blood vessels are essential for both heart and brain health. Dr. Anna S. Nordvig, a neurologist at Weill Cornell Medicine and NewYork-Presbyterian, added that poor vascular health can impair blood flow and nutrition to brain tissue, accelerating cognitive decline.
Notably, the study underscores the broader implications of vascular health beyond dementia, as many risk factors overlap with those for Alzheimer's disease. Coresh pointed out that vascular health in midlife influences Alzheimer's pathology, advocating for lifestyle changes to improve both heart and brain health.
Prevention Strategies
The research supports the idea that up to half of dementia cases could be preventable through lifestyle changes. Experts recommend addressing additional risk factors such as high cholesterol, sleep apnea, and obesity. "Fifty-five is a great time to drastically improve your future of vascular health, both in your body and in your brain," Nordvig said.
Dr. Carlsson encourages individuals to take immediate, personalized steps to improve their vascular health. "I encourage people to start with something tangible," she said, highlighting the importance of tailored prevention strategies.
The findings serve as a call to action for individuals to prioritize vascular health as a means of delaying dementia and improving overall longevity.