Vitamin D deficiency on the rise

Research suggests it has health benefits, but doctors say many people not getting enough

Susan Waun remembers her doctor was skeptical when she asked for a vitamin D test.
That changed when the test showed she was deficient. Since then, Waun's doctor has given her a prescription dosage that increased her vitamin D level.
A growing body of research suggests the vitamin -- long known to ward off rickets in children and osteoporosis in adults -- also shows promise in fighting scores of ailments, including heart attacks, cancer, autism, arthritis, migraine headaches and even depression.  Read more...