Nickel
Functions
It is not known whether nickel is an essential nutrient for humans. In animals, a deficiency of nickel results in impaired growth and haemopoiesis. Nickel seems to act as a component of several metallo-enzymes. It may be related to vitamin B12 metabolism.
Recommended Intakes
There is no recommended intake for nickel.
Food Sources
Rich sources of nickel include chocolate, nuts, dried beans, peas, and grains.
Deficiency
Because the essentiality of nickel is not known, deficiency is unknown.
Toxicity
The risk of toxicity from nickel from dietary sources is low. | 
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