I just ran across a recent study that indicates that vitamin D deficiency might increase the risk for a cardiovascular event like a heart attack or stroke. This is interesting information from the Framingham Heart Study that needs to be confirmed with more extensive medical research.
However future research pans out, testing for vitamin D status is important for many reasons including bone health, immune function, and possibly cancer prevention. Vitamin D is a helpful therapy for osteoporosis, hypertension, mood disorders (especially seasonal), and other medical conditions.
The article can be found here
Be Well,
Richard