Serum copper, zinc and selenium levels in women with unexplained infertility in Ibadan Nigeria: A cross-sectional analytical study.

Background: Infertility is a global public health issue affecting couples. Trace metals have been implicated in effective reproductive functions in males but less studied in females.

Objective: To compare the serum levels of copper (Cu), zinc (Zn), selenium (Se) and copper/zinc ratio in women with unexplained infertility and fertile women.