In this episode of Vitaminix, the spotlight is on selenium, an essential trace mineral that plays a key role in protecting cells from oxidative damage and supporting immune function. The show explores how selenium is crucial for the proper functioning of antioxidants like glutathione peroxidase, which help reduce inflammation and protect against chronic diseases. Selenium also supports thyroid health by aiding in the production of thyroid hormones. The episode highlights food sources rich in selenium, such as Brazil nuts, seafood, and whole grains, and discusses the effects of deficiency, which can lead to weakened immune function, fatigue, and thyroid problems. It also covers the potential risks of excessive selenium intake, which can cause symptoms like hair loss, gastrointestinal issues, and nerve damage, emphasizing the importance of balanced selenium consumption for overall health.