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en.wikipedia.org/wiki/Vitamin_B12

Vitamin B12, also called cobalamin, is a water-soluble vitamin that has a key role in the normal functioning of the brain and nervous system via the synthesis of ...

www.webmd.com/diet/vitamin-b12-deficiency-symptoms-causes

Vitamin B12 is essential for good health, but some people may not be getting enough. WebMD tells you about symptoms of a vitamin B12 deficiency and how it  ...

ods.od.nih.gov/factsheets/VitaminB12-HealthProfessional

Feb 11, 2016 ... Introduction. Vitamin B12 is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary ...

www.prevention.com/health/signs-of-b12-deficiency

Nov 6, 2015 ... Could you be vitamin B12 deficient? Check out these 9 signs and see if you need more of the vitamin.

draxe.com/vitamin-b12-benefits

Apr 20, 2015 ... A vitamin B12 deficiency is thought to be one of the leading nutrient deficiencies in the world, with a 2004 study showing that it's a major health ...

www.health.harvard.edu/blog/vitamin-b12-deficiency-can-be-sneaky-harmful-201301105780

May 4, 2017 ... There are many causes for vitamin B12 deficiency. Surprisingly, two of them are practices often undertaken to improve health: a vegetarian diet ...

www.veganhealth.org/articles/vitaminb12

Vitamin B12 is a complicated vitamin with a unique absorption mechanism and a number of inactive analogues (molecules that appear to be active B12, but ...

www.health.com/health/gallery/0,,20924065,00.html

Jun 24, 2015 ... Vitamin B12 is a powerhouse. It helps make DNA, nerve and blood cells, and is crucial for a healthy brain and immune system.

www.medicalnewstoday.com/articles/219822.php

Sep 1, 2016 ... Vitamin B12, or Cobalamin, is one of the eight B vitamins. It is needed to ensure the proper functioning and health of nerve tissue, brain function ...