ScienceDaily for January 18, 2011 reported on vitamin D levels.
Researchers from Boston University School of Medicine (BUSM) have for the first time shown that reduced vitamin D absorption in patients with quiescent Crohn's disease (CD) may be the cause for their increased risk for vitamin D deficiency. The findings, which currently appear online in Inflammatory Bowel Diseases, also showed that the only way to determine absorption efficiency is to perform a vitamin D bioavailability test.
