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2. Vitamin B12 deficiency - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12_deficiency

   Vitamin B 12 deficiency is preventable with supplements, which are recommended for pregnant vegetarians and vegans, and not harmful in others. [2] Risk of toxicity due to vitamin B 12 is low. [2] Vitamin B 12 deficiency in the US and the UK is estimated to occur in about 6 percent of those under the age of 60, and 20 percent of those over the ...

3. Vitamin B12 Is a Power Nutrient. Here's How to Know If ... - AOL

   www.aol.com/vitamin-b12-power-nutrient-heres...

   “Vitamin B12 requirements are low because we can store up to 2,500 micrograms in the liver,” says Ryan D. Andrews, R.D., C.S.C.S., principal nutritionist at Precision Nutrition. So target just ...

4. Vitamin B12 - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12

   "B12" and "Cbl" redirect here. For other uses of B12, see B12 (disambiguation). For the musical group, see Carbon Based Lifeforms. Pharmaceutical compound Vitamin B12 General skeletal formula of cobalamins Stick model of cyanocobalamin (R = CN) based on the crystal structure Clinical data Other names Vitamin B12, vitamin B-12, cobalamin AHFS / Drugs.com Monograph MedlinePlus a605007 License ...

5. Vitamin deficiency - Wikipedia

   en.wikipedia.org/wiki/Vitamin_deficiency

   Supplementation with folate can mask vitamin B 12 deficiency. [39] [40] Consuming a vegan diet increases the risk, since Vitamin B 12 is mostly found in food and drinks made from animal products, including eggs and dairy products. Vitamin C deficiency: Deficiency leads to weakness, weight loss and general aches and pains.

6. Vitamin B12-binding domain - Wikipedia

   en.wikipedia.org/wiki/Vitamin_B12-binding_domain

   In molecular biology, the vitamin B12-binding domain is a protein domain which binds to cobalamin (vitamin B12). It can bind two different forms of the cobalamin cofactor, with cobalt bonded either to a methyl group (methylcobalamin) or to 5'-deoxyadenosine (adenosylcobalamin).

7. Spirulina (dietary supplement) - Wikipedia

   en.wikipedia.org/wiki/Spirulina_(dietary_supplement)

   Spirulina contains no vitamin B 12 naturally, and spirulina supplements are not considered a reliable source of vitamin B 12, as they contain predominantly pseudovitamin B 12 (Coα-[α-(7-adenyl)]-Coβ-cyanocobamide), [21] which is biologically inactive in humans.