All About Minerals

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Why cobalt is good for you

Cobalt is an essential trace mineral that is a constituent of vitamin B12. Cobalt is a necessary cofactor for making the thyroid hormone thyroxine. Cobalt also aids in forming haemoglobin ( and healthy red blood cells).


Important cobalt facts


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Groups at risk of cobalt deficiency

There has never been a reported case of cobalt deficiency, as so little of it is required in the diet.

  • Strict vegetarians or vegans – since vitamin B12 (cyanocobalamin) is found naturally generally in animal foods in high enough levels, a deficiency of cobalt may occur if vegetarians/vegans do not get sufficient amounts from the plant foods in a vegetarian diet

People in these groups at risk of deficiency who wish to take a cobalt supplement should talk to a medical professional BEFORE taking it.


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Symptoms of cobalt deficiency

Cobalt is necessary to make vitamin B12. A deficiency of cobalt may lead to a deficiency of vitamin B12 and lead to pernicious anaemia.

Symptoms of pernicious anaemia:


Cobalt and health

People who wish to take a cobalt supplement should talk to a medical professional BEFORE taking it.



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Cobalt in food

Cobalt is found predominantly in:

Some beers contain high levels of cobalt.


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Cobalt recommended daily intake (RDI)

RDA 0.12mcg

The tolerable upper limits should only be taken for short periods and only under medical supervision.


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Cobalt works best with


Overdosage, toxicity and cautions for cobalt

Dosage over 30mg a day produce the following, short-term symptoms:



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Last reviewed: 1 January 2010 || Last updated: 1 January 2010




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NOTE: Mega doses of vitamins, minerals, amino acids, or other supplements cannot cure illnesses and in fact can be very dangerous and produce toxic side effects and interfere with medicine you are taking. Always ensure you consult your doctor before taking any type of nutrient supplement.
Disclaimer: This guide is not intended to be used for diagnostic or prescriptive purposes. For any treatment or diagnosis of illness, please see your doctor.