Study Reveals Lifestyle Factors Can Mitigate Dementia Risk Across Genetic Profiles
Favorable lifestyle factors reduce dementia risk across key genetic profiles
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A study by Kyushu University and RIKEN indicates that favorable lifestyle factors can significantly reduce dementia risk, particularly in individuals with one or no APOE ε4 alleles, a genetic risk factor for Alzheimer's disease. This research highlights the importance of lifestyle management in dementia prevention.
- 01The study analyzed data from 9,605 Japanese adults aged 65 and older to assess the impact of lifestyle factors on dementia risk.
- 02Individuals with two APOE ε4 alleles had over 10-fold higher dementia risk compared to noncarriers.
- 03Lower modifiable risk factor (mRF) scores were linked to reduced dementia risk in those with one or no APOE ε4 alleles.
- 04Brain MRI scans showed that lower mRF scores correlated with less brain atrophy in individuals without two APOE ε4 alleles.
- 05The findings suggest that while lifestyle management is beneficial, those with two alleles may require additional interventions.
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As dementia cases are projected to nearly triple globally by 2050, a new study led by Kyushu University and RIKEN highlights the role of lifestyle factors in mitigating dementia risk. Published in Alzheimer's & Dementia, the research examined 9,605 Japanese adults aged 65 and older, focusing on the interaction between genetic predisposition and modifiable risk factors (mRF). The study found that individuals with two APOE ε4 alleles, a major genetic risk factor for Alzheimer's disease, faced more than a tenfold increase in dementia risk compared to noncarriers. However, those with one or no alleles who maintained healthier lifestyles exhibited significantly lower dementia risk. MRI scans supported these results, showing less brain atrophy in individuals with lower mRF scores. The study emphasizes the need for population-based prevention strategies targeting lifestyle and vascular risk factors, particularly for those with genetic predispositions.
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The findings suggest that lifestyle management can significantly lower dementia risk, which may influence public health strategies and individual health decisions.
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