Vitamin D was named the “Vitamin of the year” a couple of years ago by the nutrition journals.  There are new articles coming out every month about the impact this vitamin/hormone and its amazing amount of physiological functions.  There have been several studies that show Vitamin D’s role in modulating the immune system  including this one just published last week.  What this study tells us is that if you often gets upper respiratory infections then you may have low vitamin D levels.   So do ask your PCP to order you a Vitamin D panel.  Read the rest of this entry