22 citations
,
November 2010 in “Toxicological & Environmental Chemistry Reviews” In this study, higher concentrations of Pb, Cd, Cu, and Zn were found in the hair of smokers and users of hair dyes compared to non-smokers and those with undyed hair.
3 citations
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December 2019 in “Biomaterials Research/Biomaterials research” This study found that the concentrations of major inorganic elements in human scalp hair increase with age up to 25 years, and calcium and magnesium concentrations are significantly associated with sex in individuals over 20.
5 citations
,
January 1976 in “Acta Dermato Venereologica” This study found that sodium and potassium hair levels may serve as sex-specific indicators, with slight differences in copper and iron content between males and females, particularly during the female reproductive period.
2 citations
,
January 1976 in “Munich Personal RePEc Archive (Ludwig Maximilian University of Munich)” This study found that sodium and potassium levels in scalp hair might be sex-specific indicators, while females had slightly higher copper and iron levels, particularly during the reproductive period.
November 2025 in “Biological Trace Element Research” This pilot study found no significant relationship between blood and hair mineral concentrations in generally healthy adults, though hair analysis may have potential for assessing long-term mineral trends.