Association between the serum vitamin D level and prevalence of obesity/abdominal obesity in women with infertility: a cross-sectional study of the National Health and Nutrition Examination Survey data

Abstract

Aims To explore the relationship between vitamin D and obesity and abdominal obesity in women with infertility.Material and methods We screened the data from National Health and Nutrition Examination Survey (NHANES) 2013–2016. A total of 201 infertile women between the ages of 20 and 40 years were included in our study. To estimate the independent association of vitamin D with obesity and abdominal obesity, we used weighted multivariate logistic regression models and cubic spline analyses.Results Among infertile women in the NHANES 2013–2016 database, serum vitamin D levels were significantly and negatively associated with body mass index (ß= −0.96, 95% CI: −1.40, −0.51, p 0.05).Conclusion Our findings suggested that a decreased vitamin D might correspond to a higher prevalence of obesity in infertile women, which reminded us to pay more attention to the supplement of vitamin D in obese infertile women.

Keywords

• Abdominal obesity
• infertility
• NHANES
• obesity
• vitamin D