Selenium is a trace element, meaning the body requires it in smaller amounts compared to macronutrients like carbohydrates, proteins, and fats. Despite its modest presence, selenium carries out essential functions, acting as a cofactor for various enzymes involved in antioxidant defense, thyroid hormone metabolism, and immune function. Antioxidant Powerhouse: One of selenium's standout features is its role as a component of antioxidant enzymes, particularly glutathione peroxidases. These enzymes help neutralize harmful free radicals, protecting cells from oxidative stress. The antioxidant properties of selenium contribute to cellular health and are associated with a reduced risk of chronic diseases, including certain cancers. Thyroid Function and Metabolism: Selenium plays a crucial role in thyroid health by aiding the conversion of inactive thyroid hormone (T4) to its active form (T3). This conversion is essential for maintaining proper thyroid function, which, in turn, regulates metabolism, energy production, and overall hormonal balance. Immune System Support: Selenium is intricately linked to immune system function. It helps modulate immune responses and supports the activity of immune cells. Adequate selenium levels have been associated with a strengthened immune system, which plays a pivotal role in defending the body against infections and diseases. Dietary Sources of Selenium: Brazil nuts Fish and shellfish: Tuna, halibut, sardines, shrimp, and salmon are good sources. Meat and poultry: Beef, chicken, and turkey are selenium-rich protein sources. Eggs Selenium Deficiency and Toxicity: While selenium deficiency is uncommon, it can lead to health issues such as weakened immune function and thyroid dysfunction. On the other hand, excessive selenium intake can result in toxicity, causing symptoms like nausea, hair loss, and even more severe effects in extreme cases. Striking the right balance is crucial for reaping the benefits of selenium without risking adverse effects. *Information is for educational purpose
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