| Health / Health News |
Combination of healthy lifestyle traits may substantially reduce Alzheimer’s
Combining more healthy lifestyle behaviors was associated with substantially lower risk for Alzheimer’s disease in a study that included data from nearly 3,000 research participants.
Combining four or five healthy lifestyle behaviors -- such as swimming -- may lower risk of Alzheimer's disease. Photo: NIA
Those who adhered to four or all of the five specified healthy behaviors were found to have a 60% lower risk of Alzheimer’s. The behaviors were physical activity, not smoking, light-to-moderate alcohol consumption, a high-quality diet, and cognitive activities.
“This observational study provides more evidence on how a combination of modifiable behaviors may mitigate Alzheimer’s disease risk,” said National Institute on Aging (NIA) Director Richard J. Hodes, M.D.
“The findings strengthen the association between healthy behaviors and lower risk, and add to the basis for controlled clinical trials to directly test the ability of interventions to slow or prevent development of Alzheimer’s disease.”
The research team reviewed data from two NIA-funded longitudinal study populations: The Chicago Health and Aging Project (CHAP) and the Memory and Aging Project (MAP).
They selected participants from those studies who had data available on their diet, lifestyle factors, genetics, and clinical assessments for Alzheimer’s disease.
The resulting data pool included 1,845 participants from CHAP and 920 from MAP.
At least 150 minutes per week of moderate- to vigorous-intensity physical activity – Physical activity is an important part of healthy aging.
Not smoking – Established research has confirmed that even in people 60 or older who have been smoking for decades, quitting will improve health.
Light-to-moderate alcohol consumption – Limiting use of alcohol may help cognitive health.
A high-quality, Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diet, which combines the Mediterranean diet and Dietary Approaches to Stop Hypertension (DASH) diet – The MIND diet focuses on plant-based foods linked to dementia prevention.
Engagement in late-life cognitive activities – Being intellectually engaged by keeping the mind active may benefit the brain.
The research team then compared the scores with outcomes of clinical diagnosis of Alzheimer’s in the CHAP and MAP participants. Lead author of the paper, Klodian Dhana, M.D., Ph.D., assistant professor at Rush University Medical Center, emphasized that the combination of healthy lifestyle factors is key.
He wrote that compared to participants with no or one healthy lifestyle factors, the risk of Alzheimer’s was 37% lower in those with two to three, and 60% lower in those with four to five healthy lifestyle factors.
A 2017 research review and report commissioned by NIA concluded that evidence on lifestyle factors such as increasing physical activity, along with blood pressure management and cognitive training, is “encouraging although inconclusive” for preventing Alzheimer’s.
Since then, more research has emerged, such as the SPRINT MIND trial, which suggests intensive blood pressure control may slow age-related brain damage, and new trials have launched.
The NIA-funded MIND Diet Intervention to Prevent Alzheimer's Disease is an interventional clinical trial comparing parallel groups with two different diets.
An NIA-funded collaboration between Rush University and Harvard T.H. Chan School of Public Health and Brigham & Women's Hospital (grant number R01AG052583).
MIND has enrolled more than 600 participants and is ongoing with an anticipated completion date in 2021. (National Institutes of Health)
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