Which factors may reduce the risk of Alzheimer disease (AD)?

Updated: May 09, 2019
  • Author: Shaheen E Lakhan, MD, PhD, MS, MEd; Chief Editor: Jasvinder Chawla, MD, MBA  more...
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There are no proven modalities for preventing AD. [3] Evidence, largely epidemiologic, suggests that healthy lifestyles can reduce the risk of AD. Physical activity, exercise, and cardiorespiratory fitness may be protective. [6, 7]

In a 44-year longitudinal population study of Swedish women, researchers found that a high cardiovascular fitness in midlife was associated with a decreased risk of subsequent dementia. Data show women with high fitness levels had an 88% lower risk of developing dementia compared with women who were moderately fit in midlife. Additionally, when the highly fit women did develop dementia, they developed the disease an average of 11 years later than women who were moderately fit. [139]

A French study of 8,085 nondemented participants aged 65 years and older found that frequent consumption of fruits and vegetables, fish, and omega-3 rich oils may decrease the risk of dementia and AD, especially in APOE E4 noncarriers. [140]

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