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Relationship between Sn elemental background values and regional longevity levels-Data from Yunnan, China
Shuangshuang Zhu1, Jiaxue Wang1, Xin Zhou1
1Faculty of Geography, Yunnan Normal University, Kunming, China.
Plos One
|September 12, 2025
Summary
Higher tin (Sn) levels in Yunnan Province
Area of Science:
- Environmental geochemistry
- Human health
- Geographical epidemiology
Background:
- The link between geographic environment and human health is a key research area.
- Tin (Sn) is an essential trace element impacting human health and longevity.
- Regional geochemical background values' association with population longevity requires investigation.
Purpose of the Study:
- To explore the relationship between tin (Sn) levels and regional longevity in Yunnan Province.
- To analyze the correlation between elemental geochemical background values and population longevity.
- To understand the influence of Sn on longevity indices.
Main Methods:
- Geochemical survey data from Yunnan Province.
- Chinese census data.
- ArcGIS spatial analysis and mathematical statistics.
Main Results:
- A significant positive correlation exists between tin (Sn) levels and longevity indices (longevity index and Ultra-octogenarian Index).
- Regions with higher Sn concentrations exhibit higher longevity.
- Sn positively influences the longevity index and impacts healthy longevity.
Conclusions:
- Regional tin (Sn) levels are closely associated with population longevity in Yunnan.
- Environmental Sn exposure may influence cancer incidence and affect healthy longevity.
- Further research is needed to elucidate the biogeochemical mechanisms linking Sn to longevity.

