18 citations
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May 2010 in “Zentralblatt für Veterinärmedizin Reihe A” Hair zinc levels don't reliably indicate overall zinc status in animals.
Copper deficiency lowers blood and liver copper levels in rats, but not in hair or bones.
10 citations
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May 1986 in “Experientia” Too much zinc in the diet can cause hair loss and color change in young mice by reducing copper in the body.
March 1986 in “Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)” Marginal dietary zinc intake in rats led to weight loss and hair issues, but no significant changes in blood fractions.