“…Nail Mg, P, and Se level in the last week of zinc supplementation was found to have significantly decreased compared to the level at the beginning of the supplementation, while Ca, Fe, Cu, and Zn levels have in- creased in group 2. Excessive intake of elements such as calcium, phosphorus, iron and copper reduces the absorption of zinc [11], while excessive intake of zinc also reduces the absorption of some minerals (iron, copper, calcium, phosphorus and magnesium) [12,13]. This study determined that two different applications significantly decreased Mg, P and Ca levels for both groups regardless of the dose difference.…”