Table 2 Serum levels of vitamin D, zinc, copper and zinc/copper ratio in the study population

Vitamin D

37.0 ± 10.1

33.3 ± 14.0

0.065

37.5 ± 13.8

27.8 ± 12.5

0.03

37.3 ± 13.0

26.0 ± 13.0

0.001

35.3 ± 14.0

27.8 ± 12.7

0.039

Zn

0.73 ± 0.15

0.70 ± 0.13

0.187

0.76 ± 0.11

0.63 ± 0.10

<0.001

0.75 ± 0.12

0.62 ± 0.10

<0.001

0.72 ± 0.13

0.64 ± 0.10

0.019

Cu

1.22 ± 0.29

1.30 ± 0.28

0.065

1.23 ± 0.22

1.39 ± 0.32

0.013

1.20 ± 0.23

1.49 ± 0.26

<0.001

1.23 ± 0.23

1.49 ± 0.31

<0.001

Cu/Zn

1.73 ± 0.50

1.89 ± 0.52

0.060

1.66 ± 0.37

2.19 ± 0.53

<0.001

1.63 ± 0.36

2.35 ± 0.44

<0.001

1.74 ± 0.41

2.29 ± 0.57

<0.001