Age-dependent sex differences in calcium and phosphate homeostasis

W. N.H. Koek, N. Campos-Obando, B. C.J. van der Eerden, Y. B. de Rijke, M. A. Ikram, A. G. Uitterlinden, J. P.T.M. van Leeuwen, M. C. Zillikens*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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BACKGROUND: Sex differences in calcium and phosphate have been observed. We aimed to assess a relation with age.

METHODS: We used the laboratory values of serum calcium, phosphate and albumin from three different samples ( 2005, 2010 and 2014 years) using the hospital information system of Erasmus MC, Rotterdam. The samples were divided into three age groups: 1-17, 18-44 and ≥45 years. Sex differences in calcium and phosphate were analyzed using ANCOVA, adjusting for age and serum albumin. Furthermore, sex by age interactions were determined and we analyzed differences between age groups stratified by sex.

RESULTS: In all three samples there was a significant sex × age interaction for serum calcium and phosphate, whose levels were significantly higher in women compared to men above 45 years. No sex differences in the younger age groups were found. In men, serum calcium and phosphate levels were highest in the youngest age group compared to age groups of 18-44 and ≥45 years. In women, serum calcium levels were significantly higher in the age group 1-17 and the age group ≥45 years compared to the 18-44 years age group. In women, serum phosphate was different between the three different age groups with highest level in the group 1-17 years and lowest in the group 18-44 years.

CONCLUSION: There are age- dependent sex differences in serum calcium and phosphate. Furthermore, we found differences in serum calcium and phosphate between different age groups. Underlying mechanisms for these age- and sex- differences are not yet fully elucidated.

Original languageEnglish
Pages (from-to)273-282
Number of pages10
JournalEndocrine Connections
Issue number3
Publication statusPublished - Mar 2021

Bibliographical note

Funding Information:
This work was supported by (NWO)-Research 阀nstitute for Diseases in the Elderly (Grant number 948-00-001).

Publisher Copyright: © 2021 The authors Published by Bioscientifica Ltd.


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