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Published on: May 18, 2022
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Environmental selenium and human longevity: An ecogeochemical perspective.
1School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China.
Chemosphere
|November 12, 2023
Summary
Selenium (Se), known as the "longevity element," supports anti-aging and normal bodily functions. High Se intake in Bama, China, contributes to the population
Area of Science:
- Biogeochemistry
- Human Health
- Environmental Science
Background:
- Selenium (Se) is recognized for its anti-cancer, anti-inflammatory, and antioxidant properties.
- High longevity populations offer insights into factors promoting healthy aging.
- Bama Yao Autonomous County, China, exhibits high longevity and was chosen for this study.
Purpose of the Study:
- To comprehensively analyze the anti-aging properties of selenium (Se) in a high-Se environment.
- To investigate the role of a fiber-rich polysaccharide diet in Se metabolism.
- To understand the biogeochemical factors contributing to longevity in Bama.
Main Methods:
- Systematic collection of biogeochemical samples (soil, food, hair, urine).
- Analysis of Se content and speciation in environmental and human samples.
- Assessment of Se accumulation and metabolism in residents over 60 years old.
Main Results:
- Bama soils showed moderate to high Se concentrations (77.21% high-Se).
- Dietary samples were Se-enriched, correlating with high soil Se.
- High Se intake (82.54 μg/d) was observed in the population.
- Se accumulation peaked between 71-80 years, with loss in younger and older age groups.
- Se absorption and metabolism were maintained at optimal physiological levels.
Conclusions:
- High Se levels in soil and diet are significant factors in Bama's high longevity.
- Optimal Se absorption and metabolism contribute to the health and longevity of the elderly.
- This study highlights the crucial role of selenium in promoting healthy aging.
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