ArticleFood science & nutrition2019
Low intakes of dietary fiber and magnesium are associated with insulin resistance and hyperandrogenism in polycystic ovary syndrome: A cohort study.
Article in Food science & nutrition, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 4 of them syntheses that pooled it.
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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.
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Who cites it
35 citing papers in PubMed, 4 syntheses or guidelines pooled it, 67 citations in OpenAlex.
- Pooled it
- Lower Fiber Consumption in Women with Polycystic Ovary Syndrome: A Meta-Analysis of Observational Studies.Nutrients · 2022Pooled it
- Comparison of dietary and physical activity behaviors in women with and without polycystic ovary syndrome: a systematic review and meta-analysis of 39 471 women.Human reproduction update · 2022Pooled it
- Crosstalk of Magnesium and Serum Lipids in Dyslipidemia and Associated Disorders: A Systematic Review.Nutrients · 2021Pooled it
- Integrative Transcriptomic Analysis and Functional Validation Implicate GPT2 in Glycolytic Regulation in Polycystic Ovary Syndrome.Food science & nutrition · 2026Article
- Effects of physical exercise on menstrual symptoms in polycystic ovary syndrome: a systematic review.Journal of endocrinological investigation · 2026Review
- Nutrients and bioactive compounds in polycystic ovary syndrome: updated insights into effects and underlying mechanisms.Frontiers in nutrition · 2026Review
- Diet and physical activity behaviors among women with polycystic ovary syndrome (PCOS): Are they different from healthy women?JBRA assisted reproduction · 2026Article
- Article
- Nutritional and herbal interventions for polycystic ovary syndrome (PCOS): a comprehensive review of dietary approaches, macronutrient impact, and herbal medicine in management.Journal of health, population, and nutrition · 2025Review
- MgJournal of cellular physiology · 2025Article
- Effects of AIDiet intervention to improve diet quality, immuno-metabolic health in normal and overweight PCOS girls: a pilot study.Scientific reports · 2024Article
- A Comparative Study of Food Intake and Adipose Tissue Distribution in Saudi Women with Polycystic Ovarian Syndrome.Healthcare (Basel, Switzerland) · 2024Article
- Review
- Glycemic Index and Glycemic Load Estimates in the Dietary Approach of Polycystic Ovary Syndrome.Nutrients · 2023Review
- Risk prediction of gestational diabetes mellitus in women with polycystic ovary syndrome based on a nomogram model.BMC pregnancy and childbirth · 2023Article
- Association Between Dietary Fiber and Female Fertility: a NHANES-Based Study.Reproductive sciences (Thousand Oaks, Calif.) · 2023Article
- The Effect on Inflammation of Adherence to the Mediterranean Diet in Polycystic Ovary Syndrome.Current nutrition reports · 2023Review
- Capability, Opportunity, and Motivation-Identifying Constructs for Increasing Physical Activity Behaviours in Women with Polycystic Ovary Syndrome (PCOS).International journal of environmental research and public health · 2023Article
- Effect of magnesium supplementation in improving hyperandrogenism, hirsutism, and sleep quality in women with polycystic ovary syndrome: A randomized, placebo-controlled clinical trial.Health science reports · 2023Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundWomen with polycystic ovary syndrome (PCOS) often have insulin resistance (IR) which may be worsened by obesity. The roles of dietary intake and activity are unclear. Our objectives were to determine whether (a) high caloric intake or inactivity explains obesity in PCOS, and (b) dietary composition is associated with PCOS phenotypes.
methodsEighty-seven women with PCOS and 50 women without PCOS participated in this cohort study at a reproductive medicine center. Data collected included 3-day food and physical activity records, anthropometrics, and metabolic and hormonal assays.
resultsWomen with PCOS had increased body mass index (BMI) but similar caloric intake and activity to women without PCOS. There were no differences in protein, carbohydrates, fat, or glycemic load consumption, but women with PCOS consumed less fiber (medians: 19.6 vs. 24.7 g) and less magnesium (medians: 238.9 vs. 273.9 mg). In women with PCOS, those with IR consumed less fiber, less magnesium, and greater glycemic load than those without IR (medians: 18.2 vs. 22.1 g, 208.4 vs. 264.5 mg, 89.6 vs. 83.5). Fiber intake of women with PCOS was negatively correlated with IR, fasting insulin, glucose tolerance, testosterone, and dehydroepiandrosterone sulfate. Magnesium intake was negatively correlated with IR, C-reactive protein, and testosterone, but positively correlated with HDL cholesterol. Fiber intake and BMI accounted for 54.0% of the variance observed in IR.
conclusionsObesity in women with PCOS could not be explained by overeating or inactivity. Increasing dietary fiber and magnesium intakes may assist in reducing IR and hyperandrogenemia in women with PCOS.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.