Vitamin D is 1 nutrient that Americans aren’t getting enough of, especially during the winter! It is considered a “nutrient of concern” in the 2015 Dietary Guidelines for Americans. Often called the “sunshine vitamin,” the best dose of vitamin D comes directly from ultraviolet B rays, not foods.  And of the foods that do contain Vitamin D, Americans aren’t eating enough.  Some reports show that  40-80% of Americans are vitamin D deficient.  Are you?