%0 Journal Article
%T A Randomized, Controlled Trial of Vitamin D Supplementation on Cardiovascular Risk Factors, Hormones, and Liver Markers in Women with Polycystic Ovary Syndrome
%A Alan S. Rigby
%A Eric S. Kilpatrick
%A George Abouda
%A Harshal Deshmukh
%A Lynsey Corless
%A Maria Papageorgiou
%A Stephen L. Atkin
%A Thozhukat Sathyapalan
%A Vincent Mann
%A Zeeshan Javed
%J Archive of "Nutrients".
%D 2019
%R 10.3390/nu11010188
%X Polycystic ovary syndrome (PCOS) increases the risk of metabolic syndrome and non-alcoholic-fatty-liver disease (NAFLD). Vitamin D supplementation may exert positive effects on liver biochemistry in patients with NAFLD; however, its effects on PCOS are unknown. This randomized, double-blind, placebo-controlled study explored the effect of vitamin D supplementation on cardiovascular risk factors (high-sensitivity C-reactive protein (hs-CRP), weight, body mass index (BMI), lipid profile, glucose levels, insulin levels, the homeostatic model assessment-insulin resistance (HOMA-IR), hormones (free androgen index (FAI), testosterone, sex hormone binding globulin (SHBG), and liver markers (alanine aminotransferase (ALT), hyaluronic acid (HA), N-terminal pro-peptide of type III procollagen (PIIINP), tissue inhibitor of metallo-proteinases-1 (TIMP-1), and the enhanced liver fibrosis (ELF) score). Forty women with PCOS were recruited and randomized to vitamin D (3200 IU) or placebo daily for 3 months. All outcomes were measured at baseline and 3 months follow-up (FU). Greater increases in vitamin D levels were shown in the supplementation group (vitamin D, baseline: 25.6 ¡À 11.4 nmol/L, FU: 90.4 ¡À 19.5 nmol/L vs. placebo, baseline: 30.9 ¡À 11.1 nmol/L, FU: 47.6 ¡À 20.5 nmol/L, p < 0.001). Between groups comparisons (% baseline change) revealed significant differences in ALT (p = 0.042) and a weak effect indicating a greater reduction in the HOMA-IR in the vitamin D group (p = 0.051). No further between group differences were seen in other cardiovascular risk factor, liver markers, or hormones. This study supports beneficial effects of vitamin D supplementation on liver markers and modest improvements in insulin sensitivity in vitamin D deficient women with PCOS
%K polycystic ovary syndrome
%K vitamin D
%K liver markers
%K cardiovascular risk factors
%K hormones
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6356309/