Selenium can be toxic to animals, causing serious health issues, especially in horses.
14 citations
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January 2004 in “Journal of Biochemical and Molecular Toxicology” Mustard gas exposure causes hair loss, but treating with N-acetylcysteine can prevent it.
78 citations
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December 2011 in “Clinical toxicology” Excessive selenium from a supplement caused toxicity but patients recovered with care.
3 citations
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July 2005 in “DOAJ (DOAJ: Directory of Open Access Journals)” Selenosis in calves causes health issues and changes in blood parameters.
12 citations
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June 2023 in “Journal of trace elements in medicine and biology” Eating too much selenium can cause bad breath, hair loss, and nail changes, with harmful effects starting at low daily doses.