Morley speaks with Stephanie Carter about the following topics:

✓ Vitamin D is not a vitamin. It’s a secosteroid hormone. Learn what that means for you.
✓ Your doctor is measuring the wrong kind of vitamin D.
✓ How the health benefits you read about from vitamin D are from the active form. When you supplement, you’re consuming the circulating form. This is a meaningful difference.
✓ The relationship between vitamin D and vitamin A that you need to know about.
✓ This history of vitamin D and where we went wrong.
✓ Connecting the dots: the relationship between vitamin D, magnesium, copper, and iron.