5 Signs and Symptoms of Vitamin D Deficiency YOU NEED to Know

You eat a balanced diet, get plenty of sleep, sweat several times a week, and slather on the SPF before catching any rays. You're making healthy choices in nearly every aspect of your life, but could be neglecting one very important issue that increases your risk for high blood pressure and diabetes by two and a half times, says Michael Holick, MD, author of The Vitamin D Solution and professor of medicine, physiology and biophysics at Boston University Medical Center. In fact, one billion people worldwide have a vitamin D deficiency, according to the Harvard School of Public Health.