March 1986 in “Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)” This study found no convincing evidence that marginal dietary zinc intake caused changes in blood fractions, despite signs of zinc deficiency in the low zinc group of rats.
February 1981 in “Kazan medical journal” This article reviews the research history linking zinc deficiency to hair loss and mucous membrane changes but reports no new clinical results.
18 citations
,
May 2010 in “Zentralblatt für Veterinärmedizin Reihe A” This study concluded that hair zinc levels in weaned male rats do not reliably indicate their overall zinc status, as varying dietary zinc levels produced inconsistent hair zinc concentrations.
March 1997 in “Medical Molecular Morphology” Zinc deficiency causes early scalp hair damage that recovers slower than skin symptoms.
4 citations
,
January 1992 in “The Tohoku Journal of Experimental Medicine” In this study, chronic zinc chloride administration in mice led to the replacement of long coarse hairs with short fine hairs, while overall skin histology remained normal.