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Vanadium is a trace mineral known to be essential for lower life forms; however, its importance in human nutrition remains to be determined. Studies in animal models show that vanadium mimics insulin (in diminishing hyperglycemia and improving insulin secretion) and inhibits the activity of various enzymes. Although its precise function in humans is unknown, it is thought to play a role in supporting iodine metabolism and thyroid function.
The absorption of ingested vanadium is less than five percent (5%). The best food sources are mushrooms, shellfish, black pepper, parsley, dill seed, and certain prepared foods.
There is no evidence of adverse effects associated with vanadium intake from food. At present, there is also no UL established (due to a lack of solid data).
For additional information (including a list of references), please refer to the vanadium technical bulletin at http://www.usana.com/dotCom/company/science/components.