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Seasonal Variations in Sex Steroids in a Young Male Population and Their Relationship with Plasma Levels of Vitamin D

Harvard Dataverse (Africa Rice Center, Bioversity International, CCAFS, CIAT, IFPRI, IRRI and WorldFish)

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Title Seasonal Variations in Sex Steroids in a Young Male Population and Their Relationship with Plasma Levels of Vitamin D
 
Identifier https://doi.org/10.7910/DVN/SBSQO5
 
Creator Pablo René Costanzo
 
Publisher Harvard Dataverse
 
Description Purpose: Vitamin D (VD) acts on sperm motility, capacitation and survival but its role in steroidogenesis is less clear. Aims: To analyze seasonal variations in sex steroids and VD in a healthy male population.
Materials and Methods: Twenty-nine healthy males, 34.0±4.8 years were included. Blood collection in winter (W) and summer (S) was performed to measure: 25OHD, total testosterone (TT), free testosterone (FT), estradiol (E2), luteinizing hormone
(LH), and sex hormone binding globulin (SHBG). Testosterone/estradiol (T/E2) ratio was calculated.
Results: In W, lower levels of 25OHD: 18.8±7.2 ng/mL vs. 38.8±11.9 ng/mL (p
 
Subject Medicine, Health and Life Sciences
Seasonal variations; Sex hormones; Testosterone; Vitamin D
 
Contributor Park, Hyun Jun