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Last reviewed: May 14, 2026 Last updated: May 14, 2026 Written by: Jay Hastings , CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations
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Selenium: Required cofactor for glutathione peroxidase, the enzyme family that uses glutathione to neutralize peroxides
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