Selenium Deficiency | Dietary Sources, Causes, Signs & Symptoms (Infertility), Diagnosis, Treatment

The video tutorial explains selenium's role as an essential trace mineral necessary for various bodily functions, including antioxidant protection, thyroid hormone conversion, and immune system support. It discusses dietary sources like Brazil nuts and the causes of selenium deficiency, such as low soil content and certain dietary conditions. The video outlines clinical features of deficiency, including Keshan disease, hypothyroidism, and immune dysfunction. Diagnosis involves checking selenium levels in blood, hair, or nails, while treatment includes food fortification and oral supplementation.

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