Reliable data from multiple sources, including the 2010-11 Allina study of 13,500 health care employees, demonstrates that at least 30-60% of North Americans are vitamin D deficient and that, for many, a multivitamin or a quart of milk per day is not nearly enough intake.  Participants in this webinar will learn data-based clinical pearls to identify, assess and treat patients at risk both efficiently and effectively. Participants will also learn the latest pertinent data of great interest for both clinical practice and population health.