1.Serum vitamin D content is associated with semen parameters and serum testosterone levels in men.
Inari M CICCONE ; Elaine Mf COSTA ; Juliana R PARIZ ; Thiago A TEIXEIRA ; Joel R DREVET ; Parviz GHARAGOZLOO ; Robert J AITKEN ; Jorge HALLAK
Asian Journal of Andrology 2021;23(1):52-58
The present study aimed to evaluate the influence of serum vitamin D levels on semen quality and testosterone levels. This is a cross-sectional study conducted at Androscience, Science and Innovation Center in Andrology and High-Complex Clinical and Andrology Laboratory in Sao Paulo, Brazil, with 508 male patients, aged 18-60 years, from 2007 to 2017. Seminal parameters and serum sexual hormones were correlated with serum vitamin D concentrations in 260 men selected by strict selection criteria. Patients were divided into normozoospermic group (NZG, n = 124) and a group with seminal abnormalities (SAG, n = 136). Evaluation included complete physical examination, past medical history, habits and lifestyle factors, two complete seminal analysis with sperm functional tests, serum levels of 25-hydroxy-vitamin D
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