Selenium is your body’s secret weapon against illness. It integrates into glutathione peroxidase, the master antioxidant enzyme, preventing cell death and chronic inflammation. For thyroid patients, clinical trials affirm that adequate selenium improves antibody levels in autoimmune thyroiditis. During flu season, it arms T-cells effectively. Bone health also thrives with selenium, countering osteoporosis by aiding collagen cross-linking. It even assists in detoxing heavy metals like arsenic. Warning signs of deficiency include white nail spots and insomnia. While supplementation helps, avoid mega-doses without medical advice to prevent toxicity.