Selenium is essential for health, but too little or too much can cause serious health problems.
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February 2013 in “Clinica chimica acta” Hair mineral analysis might help diagnose diseases early, but standard methods are needed.
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June 2009 in “Integrated Environmental Assessment and Management” Selenium is essential in small amounts but toxic in excess, requiring careful management.
Selenium is essential but can be harmful in excess, and China struggles with balancing its levels for health.
February 2024 in “Journal of Geochemical Exploration” Selenium levels in soil, crops, and human hair in Northwest China are within safe limits.