Friday Favorites: How to Test for Functional Vitamin B12 Deficiency
NutritionFacts.org Video Podcast - A podcast by Michael Greger, M.D. FACLM
Many doctors mistakenly rely on serum B12 levels in the blood to test for vitamin B12 deficiency.
NutritionFacts.org Video Podcast - A podcast by Michael Greger, M.D. FACLM
Many doctors mistakenly rely on serum B12 levels in the blood to test for vitamin B12 deficiency.