Care Omnia is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

What Is Selenium? Very Important, But Don't Get Too Much

Selenium is a trace mineral that is nutritionally essential for humans. It’s a vital nutrient that the body needs to stay healthy.

Selenium has many essential health benefits that we need, but the most vital role of selenium is its antioxidant effect.

Selenium Is An Essential Mineral

Selenium is an element that is essential for life and has an impact on overall health. It is, for instance, crucial for maintaining the immune system. (source 🗗)

Almost every cell of our body contains selenium. The most important role of selenium is its antioxidant effect. (source 🗗)

Selenium has many health benefits but also some side-effects. You can find them in Selenium, Se: 10 Research-Backed Benefits & 2 Side-Effects .

Selenium in foods

Foods that contain selenium are highly varied. The richest selenium source is found in animal organs and seafood. (source 🗗)

Fruits and vegetables only contain a small amount of selenium. (source 🗗)

If you are interested in a list of foods where you can find this nutrient. Go to our nutrition tool and check out selenium.

Fertilizers with selenium contents uses to increase the selenium content in different plant foods. (source 🗗)

Selenium can be toxic

Even though selenium is essential, it also has toxic properties. Overuse of enriched products can result in poisoning. It can lead to hair loss and diarrhea. (source 🗗)

However, it is almost impossible to overdose the amount of selenium needed for poisoning with food. (source 🗗)

Let your family and friends know about Selenium, Se

Sara Niemelä

co-founder Care Omnia, Head Content Creator


I’m a wife and a mother of three. I enjoy the outdoors, cooking, and spending time with my family. Nutrition is my passion. I have spent thousands upon thousands of hours reading, analyzing, categorizing and comparing research studies. Nutrition is the foundation you build a healthy and fulfilling life upon!