Received March 16, 2020
Accepted September 20, 2020

Objective: To evaluate the selenium status and oxidative stress in male infertility selected in a private human reproduction center in Ceará. Method: The present study was a cross-sectional quantitative approach, carried out between January and October 2013 at a Human Reproduction Center. The studied population was composed of 49 male individuals. seen at the clinic, aged between 18 and 60 years. Blood samples were collected to measure selenium concentrations in plasma and erythrocyte activity and glutathione peroxidase. After medical diagnosis, the participants were divided into fertile and infertile groups. Blood samples were collected for the determination of Se concentrations in plasma and erythrocytes and measurements of the enzymatic activity of glutathione peroxidase in erythrocytes. Result: It resulted in 53.1% of fertile men and 46.9% of infertile men. The average age of the fertile group was 34.1 years and the infertile group was 37.3 years. Regarding the assessment of nutritional status, the dispersion diagram between the group with infertility showed a higher body mass index and waist circumference, showing that this group has a higher risk of global and abdominal obesity compared to the group fertile (p <0.0001, respectively). There were similarities between the groups regarding caloric intake, macronutrient intake and selenium. Conclusion: We can conclude that the serum values of selenium, in excess and in deficiency, can be harmful to male fertility.