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Selenium

Selenium is a trace mineral that is essential for human health. It plays an important role in the body's antioxidant defense system, helps to maintain a healthy immune system, and is involved in the metabolism of thyroid hormones. Selenium is found in a variety of foods, including seafood, meat, poultry, eggs, dairy products, nuts, and seeds. The amount of selenium in plant-based foods can vary depending on the selenium content of the soil in which they were grown. Deficiency in selenium can lead to a variety of health problems, including muscle weakness, fatigue, and an increased risk of viral infections. In severe cases, it can lead to a condition called Keshan disease, which is a type of heart disease. However, excessive intake of selenium can also be harmful and can cause symptoms such as hair loss, gastrointestinal upset, and neurological problems.

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