American Journal of Clinical Nutrition, Vol 31, 1175-1180, Copyright © 1978 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Hair analysis of trace minerals in human subjects as influenced by age, sex, and contraceptive drugs

SB Deeming and CW Weber

Eleven male and 16 female residents of Tucson, Arizona volunteered blood and hair samples and dietary information. Hair and blood samples were analyzed for zinc, copper, magnesium, and iron. Dietary records were calculated for the same. Female subjects had a higher mean hair zinc level than male subjects, but serum zinc was not different for the two groups and mean dietary zinc intake was greater for males. The only difference observed with age was a decrease in hair zinc level over 50 years of age. The taking of oral contraceptives resulted in mean hair copper level numerically decreased while serum copper increased. Mean hair zinc increased with contraceptive use and serum zinc decreased. Mean dietary intakes of copper and zinc were not different between nonpregnant control women and women taking oral contraceptives. For human subjects, mineral concentration of hair, serum, and diet do not correlate well, emphasizing that influencing factors and must be considered in interpreting hair analysis results.

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