Table 2.

Studies that considered copper intake.

First Author, Year	Study Design	Institution and Country	Inclusion Criteria	Number of Subjects (M-F) Mean Age	Lowest Quintile Intake/RDA or EAR	% Subject in Lowest Quintile Intake/% Subject < RDA or EAR	Highest Quintile Intake	% Subject in Highest Quintile Intake	Primary Outcomes	Results
Mahdavi-Roshan, 2015 [28]	Cross-sectional study	Rheumatology clinic in Tabriz, Islamic Republic of Iran	Postmenopausal women > 50 years, having no history of hormone replacement therapy	51 F 57.97 ± 1.2 y	The mean dietary intake (and percent from RDA) of copper in post-menopausal women with low bone density was 1.07 ± 0.08 mg/day (120 ± 12.2% RDA)				Investigate and compare the mineral status between osteopenic and osteoporotic postmenopausal women.	No statistically significant differences between the osteopenic and osteoporotic groups with respect to dietary intake copper.