is selenium a mood booster
And because foods grown in that soil are coming up seriously short in selenium. Selenium is required for the proper function of the thyroid, which plays an important role in mood and behavior. As a result, people with a selenium deficiency may have an increased risk for depression.nd those with the most selenium in their blood felt the best. Whatâs more, the men in the study who initially had the lowest moods saw the biggest improvement. Put a smile on your face and get your fill of this mood booster. Brazil nuts are the richest food source of selenium.