selenium toxicity

Selenium is a trace mineral essential for health in small amounts, supporting immune function and antioxidant defenses. However, excessive selenium intake can lead to toxicity, known as selenosis. Symptoms include hair and nail loss, gastrointestinal upset, fatigue, and neurological issues. Chronic overexposure can also cause more serious health problems. Selenium toxicity usually results from taking too many supplements or consuming high levels in contaminated food or water. Maintaining selenium intake within recommended limits is important to avoid adverse effects, as both deficiency and excess can impact health.