selenium deficiency

Selenium deficiency occurs when the body lacks enough of this essential mineral, which is vital for supporting the immune system, protecting cells from damage, and regulating thyroid function. Without enough selenium, individuals may experience weakened immunity, increased vulnerability to infections, and potential thyroid problems like fatigue and weight changes. Though rare in developed countries due to dietary intake, low selenium levels can occur in areas with selenium-poor soils or in people with certain medical conditions. Maintaining adequate selenium intake through balanced diet sources such as nuts, seafood, and meats is important for overall health.