New subscribers to our e-newsletter always receive a free gift. Get yours here: https://nutritionfacts.org/subscribe/



DESCRIPTION: Have a question about this video? Leave it in the comment section at http://nutritionfacts.org/videos/new-vitamin-b12-test/ and I'll try to answer it! Who should get tested for vitamin B12 (cobalamin) deficiency and which is the best test to use: serum B12, methylmalonic acid (MMA), or holotranscobalamin levels? This concludes our five-part video series on B12 this week. Please leave any questions you may have below. If you're new to the issue, Vegan B12 Deficiency: Putting It into Perspective (http://nutritionfacts.org/blog/2011/08/25/vegan-b12-deficiency-putting-it-into-perspective/) and Safest Source of B12 (http://nutritionfacts.org/video/safest-source-of-b12/) are good places to start. The consequences of B12 deficiency can be grave (see Inverted Rabbit Sign - http://nutritionfacts.org/video/inverted-rabbit-sign/), but getting enough is easy: B12 can be taken weekly (see Cheapest Source of Vitamin B12 - http://nutritionfacts.org/video/cheapest-source-of-vitamin-b12/) or daily (see Daily Source of Vitamin B12 - http://nutritionfacts.org/video/daily-source-of-vitamin-b12/). See my full recommendations (http://nutritionfacts.org/blog/2011/09/12/dr-greger%E2%80%99s-2011-optimum-nutrition-recommendations/) and check out the other 1000+ topics (http://nutritionfacts.org/topics/) I cover here at NutritionFacts.org (http://nutritionfacts.org/).

Image Credit: Bobjgalindo via Wikimedia Commons.

https://NutritionFacts.org
• Subscribe: https://nutritionfacts.org/subscribe
• Donate: https://nutritionfacts.org/donate
• Podcast : https://nutritionfacts.org/audio
• Facebook: www.facebook.com/NutritionFacts.org
• Twitter: www.twitter.com/nutrition_facts
• Instagram: www.instagram.com/nutrition_facts_org
• Books: https://nutritionfacts.org/books
• Shop: https://drgreger.org