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. 2022 May 27;9:851782. doi: 10.3389/fmed.2022.851782

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Copyright © 2022 Kraljević Pavelić, Saftić Martinović, Simović Medica, Žuvić, Perdija, Krpan, Eisenwagen, Orct and Pavelić.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Copper (A), sodium (B), and calcium (C) blood levels in the Placebo and Verum groups during the osteoporosis TOP study course of 4 years with corresponding limits of the referent values. Statistically significant lower levels (post-hoc, p < 0.05) were observed in the third year for copper, sodium and calcium and in the fourth year for calcium and sodium in comparison with the lower referent values. TOP1-Placebo (without PMA-zeolite supplementation); TOP1-Verum, end of the first year of PMA-zeolite supplementation; TOP2-Verum 2Y, end of the second year of PMA-zeolite supplementation; TOP3-Verum 3Y, end of the third year of PMA-zeolite supplementation; TOP4-Verum 4Y, end of the fourth year of PMA-zeolite supplementation.