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Epigenetics as a link between environmental factors and dementia risk
Adamantia Koulouri1, Anthony S Zannas2,3
1Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece.
Journal of Alzheimer'S Disease Reports
|March 4, 2025
Summary
Environmental factors like nutrition and exercise influence dementia risk through epigenetic changes. Understanding these links can lead to new biomarkers and early interventions for cognitive decline.
Area of Science:
- Neuroscience
- Genetics
- Environmental Health
Background:
- Dementia involves cognitive impairments affecting daily life, often arising from complex gene-environment interactions.
- Epigenetic regulation is a key mechanism mediating these gene-environment interactions in dementia.
Purpose of the Study:
- To review current evidence on environmental exposures and dementia risk.
- To highlight the role of epigenetic mechanisms linking environmental factors to dementia.
- To discuss clinical implications and future research directions.
Main Methods:
- Narrative review of scientific literature.
- Focus on environmental exposures: nutrition, physical exercise, psychosocial stress, and toxins.
- Examination of reported epigenetic mechanisms.
Main Results:
- Evidence links nutrition, exercise, stress, and toxins to dementia risk via epigenetic pathways.
- Epigenetic modifications offer a molecular bridge between environmental exposures and dementia pathogenesis.
- Specific epigenetic mechanisms are implicated in mediating these relationships.
Conclusions:
- Understanding epigenetic links between environment and dementia is crucial for developing predictive biomarkers.
- Targeted therapies for early intervention in dementia can be informed by epigenetic research.
- Further investigation into these mechanisms can advance dementia prevention and treatment strategies.
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