Those mail base readers interested in nutrition (or indeed science) will be interested in President Obama's serum vitamin D result (from his examination in May 2014), which was 22.9 ng/mL (or 57 nmol/L). I am not breaching patient confidentiality, since these matters are published on line (The President's periodic physical exam. June 12, 2014. Washington, DC: The White House; June 12, 2014. http://www.whitehouse.gov/the-press-office/2014/06/12/release-presidents-medical-exam Accessed August 20, 2014) He was diagnosed with mild vitamin D deficiency and put on supplementation right away - a wise decision, you will all agree. Nick Miller London ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk Green Laboratories Work http://www.laboratorymedicine.nhs.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/