ArticleNutrition & metabolism2021
Metabolic and hormonal effects of melatonin and/or magnesium supplementation in women with polycystic ovary syndrome: a randomized, double-blind, placebo-controlled trial.
Article in Nutrition & metabolism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 9 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
31 citing papers in PubMed, 9 syntheses or guidelines pooled it, 48 citations in OpenAlex.
- Comprehensive Effects of Magnesium Supplementation on Cardiometabolic Risk Factors: A Systematic Review and Dose-Response Meta-Analysis.Nutrients · 2026Pooled it
- Comprehensive Effects of Melatonin Supplementation on Cardiometabolic Risk Factors: A Systematic Review and Dose-Response Meta-Analysis.Nutrients · 2025Pooled it
- The effectiveness of nutritional supplements in improving polycystic ovary syndrome in women: a systematic review and network meta-analysis.Reproductive biology and endocrinology : RB&E · 2025Pooled it
- Does Magnesium Affect Sex Hormones and Cardiometabolic Risk Factors in Patients with PCOS? Findings from a Systematic Review and Meta-Analysis.Medicina (Kaunas, Lithuania) · 2025Pooled it
- The effect of magnesium supplementation on serum concentration of lipid profile: an updated systematic review and dose-response meta-analysis on randomized controlled trials.Nutrition journal · 2025Pooled it
- Exploring the potential association and experimental validation of disrupted circadian rhythms with polycystic ovary syndrome via meta-analysis and bioinformatics: a possible pathogenic mechanism.Frontiers in endocrinology · 2025Pooled it
- Effect of melatonin supplementation on cardiometabolic risk factors, oxidative stress and hormonal profile in PCOS patients: a systematic review and meta-analysis of randomized clinical trials.Journal of ovarian research · 2024Pooled it
- The effect of magnesium alone or its combination with other supplements on the markers of inflammation, OS and metabolism in women with polycystic ovarian syndrome (PCOS): A systematic review.Frontiers in endocrinology · 2022Pooled it
- Pooled it
- Melatonin alleviates mitochondrial damage by regulating SIRT3‑mediated mitochondrial dynamics in granulosa cells under PCOS‑like conditions.Molecular medicine reports · 2026Article
- The effects of melatonin supplementation on obesity and glycemic indices in women with overweight and obesity: a systematic review and meta-analysis of randomized controlled trials.Diabetology & metabolic syndrome · 2026Article
- Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review.Nutrition reviews · 2026Review
- Causal Associations Between Sleep Traits and Polycystic Ovary Syndrome: A Univariable, Bidirectional, and Multivariable Mendelian Randomization Study.The journal of obstetrics and gynaecology research · 2026Article
- Effects of melatonin supplementation on blood glycemic indices in adults: a GRADE-assessed systematic review and dose-response meta-analysis of randomized controlled trials.Nutrition & metabolism · 2026Review
- The importance of ovary-immune interactions in the context of age and disease.Frontiers in neuroendocrinology · 2026Review
- The Impact of Melatonin Supplementation on Various Aspects of Polycystic Ovary Syndrome: A Systematic Review and Meta-Analysis.Health science reports · 2025Review
- Effects of melatonin in polycystic ovary syndrome: is there Hippo pathway crosstalk?Journal of ovarian research · 2025Review
- Circadian rhythm disruption and polycystic ovary syndrome: a systematic review and meta-analysis.AJOG global reports · 2025Review
- The impact of GABA and GABAergic pathway in polycystic ovary syndrome: a systematic review.Obstetrics & gynecology science · 2025Article
- Proteomic analysis reveals the alleviation of follicular development defects in offspring mice under DEHP exposure by melatonin.BMC biology · 2025Article
Corrections and comments
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Authors and funding
7 authors at 4 institutions in 1 country.
Funding
Abstract
backgroundPolycystic 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.
methodsIn 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.
resultsAfter 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 was also observed following the administration of the melatonin alone (2.76 (mg/dl) [0.57, 4.95]) or in combination with magnesium (2.19 (mg/dl) [0.61, 3.77]) (P < 0.05).
conclusionsCo-supplementation with magnesium and melatonin had beneficial effects on sleep quality and total testosterone. Additionally, melatonin supplementation alone was found to be associated with a significant reduction in PSQI score. Moreover, combined melatonin and magnesium supplementation was more effective in improving serum levels of cholesterol, LDL-C, HDL-C and insulin, and HOMA-IR.
trial registrationIranian Registry of Clinical Trial. http://www.irct.ir : IRCT20191130045556N1, January 2020.
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