New study finds that maintaining good brain health may help protect cognitive function from early Alzheimer's disease. Learn more about the research and its implications.
A healthy brain may offer a protective shield against the early effects of Alzheimer's disease, according to a recent study published in Neurology. The research, conducted by Murdoch University and AdventHealth, investigated why some individuals remain cognitively sound despite showing signs of Alzheimer's-related brain changes.
The study analyzed data from over 600 older adults aged 65 to 80 who were living independently and had no signs of dementia or memory impairment. Participants underwent blood tests and MRI scans to assess early Alzheimer's-related changes and overall brain health. They also completed cognitive tests measuring various aspects of thinking and memory.
Lead author Dr. Kelsey Sewell, from Murdoch University's School of Allied Health, the research aimed to understand why some brains are more resilient than others when it comes to Alzheimer's disease. Factors such as education level, socioeconomic status, and brain health were considered in the study.
"Our main finding was that maintaining good overall brain health may help reduce the impact of Alzheimer's-related changes on cognitive function," Dr. Sewell stated. "We also observed early evidence suggesting that people with higher socioeconomic statuses might be less affected by Alzheimer's-related changes when it comes to memory, although more research is needed to confirm this relationship."
The study highlights the importance of preserving brain health through various lifestyle choices such as exercise, a healthy diet, sufficient sleep, and engaging in new cognitive challenges. Dr. Sewell emphasized that these strategies are beneficial regardless of age.
"These results underscore the need for coordinated efforts across different sectors to create environments that support healthier choices and promote brain health at a population level," she added.
The research team's findings suggest that maintaining good overall brain health can mitigate the effects of Alzheimer's-related changes on cognitive function. While more research is needed, these insights could lead to earlier interventions aimed at minimizing the impact of the disease on memory and thinking skills.
Experts caution that while this study provides valuable information, it does not provide definitive answers about how to prevent or delay the onset of Alzheimer's disease. Further studies are necessary to explore potential preventive measures and targeted strategies for affected individuals.
Publication details: Kelsey R. Sewell et al, Cognitive and Brain Reserve as Modifiers of Early Alzheimer Disease-Related Cognitive Vulnerability, Neurology (2026).
DOI: 10.1212/wnl.0000000000214833
Journal information: Neurology
Key medical concepts: Alzheimer's Disease Cognition Brain Reserve Magnetic Resonance Imaging (MRI)
Clinical categories: Neurology Healthy aging Healthy living Sleep & Recovery
