(NaturalHealth365) North Americans are famously deficient in a number of vitamins and minerals, including vitamin D, magnesium, omega-3 fatty acids, iron, and B vitamins. Fortunately, selenium deficiency is relatively rare in the United States, although an estimated 1 billion people throughout the world are lacking in this important nutrient. Read more:
https://www.naturalhealth365.com/selenium-health-benefits-3789.html