Physical activity initiated from midlife on risk of dementia and cognitive impairment: The Health and Retirement Study.

Jingkai Wei, Matthew C Lohman, Monique J Brown, James W Hardin, Hanzhang Xu, Chih-Hsiang Yang, Anwar T Merchant, Maggi C Miller, Daniela B Friedman

Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA.Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA. · pubmed

Paper

Abstract

Physical activity is associated with lower risk of dementia and cognitive impairment, but existing randomized controlled trials have shown conflicting results. As cognitive decline occurs decades before the onset of dementia, physical activity interventions initiated in late life may have missed the potential window for prevention. An ideal trial of physical activity initiated from midlife and lasts till incident dementia and cognitive impairment in late life is not feasible. We aimed to estimate the effectiveness of a hypothetical physical activity intervention initiated from midlife on reducing dementia and cognitive impairment by emulating target trials using observational data.

The following analysis is generated by AI and may contain errors. It is separate from the authors’ abstract and is not peer review.

Research summary

The paper investigates the relationship between physical activity initiated in midlife and its potential effects on reducing the risk of dementia and cognitive impairment, which are significant concerns in aging research. However, it primarily focuses on observational data rather than addressing the root causes of aging or proposing interventions that could fundamentally alter the aging process. The findings may contribute to understanding lifestyle factors in aging but do not represent a major advancement in the field. Thus, the impact is rated as solid but limited.

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