Selenium is an essential nutrient. But what exactly is it?
- Posted on February 4, 2025
- By Usa Today
- 5 Views
![](https://www.usatoday.com/gcdn/authoring/authoring-images/2025/01/29/USAT/78019484007-getty-images-1296579655.jpg?crop=3811,2144,x0,y198&width=1600&height=800&format=pjpg&auto=webp)
Selenium is an essential nutrient. But what exactly is it?
![](https://www.usatoday.com/gcdn/authoring/authoring-images/2025/01/29/USAT/78019484007-getty-images-1296579655.jpg?crop=3811,2144,x0,y198&width=1600&height=800&format=pjpg&auto=webp)
Here's what selenium is, what benefits it provides and the dangers of taking too much.