Selenium

Selenium is an important mineral. It’s necessary for many processesTrusted Source, such as:

thyroid hormone metabolism
DNA synthesis
reproduction
protection from infection

What does selenium do?
Selenium is a particularly important mineral because it supports the function of several systems. These include the endocrine, immune, and cardiovascular systems. The thyroid, part of the endocrine system, is the organ with the highest concentration of selenium per weight of organ tissue.

Selenium deficiency can produce a range of symptoms. The most common ones are:

infertility in men and women
muscle weakness
fatigue
mental fog
hair loss
weakened immune system

Although selenium deficiency is rare, it’s important to make sure you’re getting enough of it and absorbing it properly. If you think you may have a selenium deficiency, work with a qualified healthcare professional to rule out other possible causes of your symptoms.

Note: This does not constitute medical advice, always consult your GP if you are concerned about your health.