Nickel and Cobalt are associated trace elements, and considered essential to human health. While a Cobalt Vitamin B12 relationship is well documented, a similar, but less documented affiliation applies to Nickel Vitamin C. Also less documented is the control nickel and cobalt exert over the muscular walls of the body's arteries. Cobalt specifically affects the right coronary artery, resulting in vasodilation with low levels, and vasoconstriction with high levels, while nickel exerts the same vasodilating vasoconstricting effect on the left coronary artery... Full Text