Metabolic and hormonal effects of melatonin and/or magnesium supplementation in women with polycystic ovary syndrome: a randomized, double-blind, placebo-controlled trial
Abstract
Background Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders among women of reproductive age. This study was designed to investigate the effects of melatonin and/or magnesium supplementation on metabolic profile and levels of sex hormones in PCOS women. Methods In an 8-week randomized double-blind placebo-controlled trial, 84 subjects with PCOS aged 18–40 years were randomly assigned based on the random block procedure to take magnesium, melatonin, magnesium plus melatonin, and placebo. Fasting blood samples were obtained at the beginning and end of the study. Results After intervention, the mean Pittsburg Sleep Quality Index score decreased significantly in both co-supplementation and melatonin groups ( P < 0.001). Magnesium supplementation in combination with melatonin resulted in a significant greater decrease in testosterone concentrations compared with the placebo ( P < 0.05). Co-supplementation of magnesium-melatonin had significantly reduced serum insulin levels (geometric means difference: − 1.11 (mIU/mL) (percent change: − 15.99)), homeostasis model of assessment-insulin resistance (HOMA-IR) (− 0.28 (− 18.66)), serum cholesterol (mean difference: − 16.08 (mg/dl) [95% CI − 24.24, − 7.92]), low-density lipoprotein cholesterol (LDL-C) − 18.96 (mg/dl) [− 28.73, − 9.20]) and testosterone levels (− 0.09 (ng/ml) (− 25.00)), as compared to the baseline values ( P < 0.05). An increase in serum high-density lipoprotein cholesterol (HDL-C) levels…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 84 participants or records.
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