The moderating effect of dietary selenium intake on the risk of infertility-associated depressive symptoms in female.

Abstract

To analyze the associations between infertility or dietary selenium intake and depressive symptoms as well as the role of selenium intake on the association between infertility and depressive symptoms in women. This study retrieved the data of 4949 women from National Health and Nutrition Examination Survey (NHANES) database. Univariable and multivariable weighted logistic regression analyses were applied to assess the associations of selenium intake or infertility with the risk of depressive symptoms as well as the regulation of selenium intake on the risk of depressive symptoms related to infertility. The elevated risk of depressive symptoms was found in participants with infertility (odds ratio [OR] = 1.54, 95% confidence interval [CI]: 1.11-2.15). The risk of depressive symptoms was reduced in women with selenium intake ≥55 μg (OR = 0.64, 95%CI: 0.46-0.90). Compared with women without infertility who had selenium intake <55 μg, those with infertility and had selenium intake <55 μg were associated with elevated risk of depressive symptoms after adjusting for confounding factors (OR = 2.01, 95%CI: 1.03-3.90). The risk of depressive symptoms was not significantly increased in women with infertility who had selenium intake ≥55 μg in comparison with subjects without infertility who had selenium intake ≥55 μg (p > 0.05). Selenium intake regulated the association between infertility and depressive symptoms.