Dementia prevention is an increasingly important area of research. While there is currently no cure for dementia, a major 2024 report from the Lancet Commission on Dementia Prevention, Intervention and Care estimated that up to 45% of dementia cases worldwide may be associated with 14 potentially modifiable risk factors across the lifespan.
The report emphasizes that brain health isn’t determined by a single choice or event. Instead, it is shaped by a combination of lifestyle habits, health conditions, and environmental factors across every stage of life. Although no strategy can completely eliminate the risk of dementia, addressing these factors may help support long-term cognitive health.
Brain health begins long before older adulthood. Researchers found that completing secondary education is associated with a lower risk of developing dementia later in life. Education, lifelong learning, and mentally stimulating activities help build what’s known as cognitive reserve—the brain’s ability to adapt and remain resilient as we age.
Many of the strongest dementia risk factors emerge during midlife, making this an important time to prioritize preventive health. According to the report, these factors include:
The encouraging news is that many of these risks can be reduced through healthy lifestyle choices and appropriate medical care. Regular physical activity, managing chronic conditions, quitting smoking, limiting alcohol, protecting the head from injury, and seeking treatment for hearing loss or depression may all contribute to better brain health over time.
The report also highlights several important factors during later life. Social isolation, untreated vision loss, and prolonged exposure to air pollution were all associated with an increased risk of dementia.
Maintaining meaningful social relationships, addressing vision problems such as cataracts, and taking steps to reduce exposure to poor air quality may help support cognitive health while also improving overall quality of life.
One of the report’s most hopeful messages is that it’s never too early—or too late—to invest in brain health. While dementia cannot always be prevented, adopting healthy habits throughout life may reduce risk and promote healthier aging.
Simple actions such as staying physically active, managing chronic health conditions, continuing to learn, protecting your hearing and vision, preventing head injuries, and nurturing strong social connections can all contribute to a healthier brain. At Aging123, we believe that every positive step—no matter when it begins—is an investment in a healthier future.
To learn more about how dementia is affected by lifestyle factors, check out this link: https://www.alzdiscovery.org/cognitive-vitality/blog/targeting-14-lifestyle-factors-may-prevent-up-to-45-of-dementia-cases#ref-1.