K Deficiency - Videos

NBC's Tracie Potts reports from Washington on a study that indicates seven of ten American children lack the proper amount of Vitamin D.

A vitamin D deficiency may worsen asthma symptoms in children.

Diet and Hair

Growth Hormone is one of the most essential yet possibly misunderstood chemicals in our body. Separate the facts from the fiction in this introduction to growth hormone.

Watch this review of the common risk factors for osteoporosis, or bone loss, including smoking, estrogen deficiency, white or asian race, lack of exercise, inadequate calcium intake, and family history.