SynthesisNutrients2021
Effect of Vitamin D Supplementation on Glycemic Control in Prediabetes: A Meta-Analysis.
Synthesis in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 35 citations in OpenAlex.
- The Effect of Vitamin D Supplementation on Glycemic Control and Cardiovascular Risk Factors in Type 2 Diabetes: An Updated Systematic Review and Meta-Analysis of Clinical Trials.Journal of diabetes research · 2024Pooled it
- The impacts of vitamin D supplementation in adults with metabolic syndrome: A systematic review and meta-analysis of randomized controlled trials.Frontiers in pharmacology · 2022Pooled it
- Effect of CYP2R1 and GC gene polymorphisms on serum 25(OH)D response to vitamin DEuropean journal of clinical nutrition · 2025Trial
- Effect of intratrial mean 25(OH)D concentration on diabetes risk, by race and weight: an ancillary analysis in the D2d study.The American journal of clinical nutrition · 2023Trial
- Article
- Clinicopathological Evaluation of Cholesterolosis in Cholecystitis: Histopathological Patterns and Metabolic Correlates.Journal of clinical medicine · 2025Article
- Effects of vitamin D supplementation on metabolic parameters, anthropometric measures, and diabetes risk in patients with prediabetes: an umbrella review of meta-analyses of randomized controlled trials.Nutrition & metabolism · 2025Review
- Vitamin D ameliorates prediabetic cardiac injure via modulation of the ErbB4/ferroptosis signaling axis.Frontiers in immunology · 2025Article
- Comparative proteomic exploration of plasma proteins in different levels of vitamin D with type 2 diabetes mellitus using iTRAQ-coupled LC-MS/MS.Journal of diabetes and metabolic disorders · 2024Article
- Sex-related differences in vitamin D testing in the Veneto Region, Italy: a retrospective analysis from 2005 to 2016.Archives of osteoporosis · 2024Article
- Review
- Association of serum 25-hydroxy vitamin D status with cardiometabolic risk factors and total and regional obesity in southern Iran: evidence from the PoCOsteo study.Scientific reports · 2024Article
- Development and Validation of the Meiji Nutritional Profiling System (Meiji NPS) to Address Dietary Needs of Adults and Older Adults in Japan.Nutrients · 2024Article
- Correlation between hyperlipidemia and serum vitamin D levels in an adult Chinese cohort.Frontiers in nutrition · 2024Article
- Serum 25-hydroxyvitamin D level is associated with short-term glycemic variability metrics derived from continuous glucose monitoring in T2DM.Scientific reports · 2023Article
- Safety Profile of Vitamin D in Italy: An Analysis of Spontaneous Reports of Adverse Reactions Related to Drugs and Food Supplements.Journal of clinical medicine · 2023Article
- The Mutual Interplay between Bone, Glucose and Lipid Metabolism: The Role of Vitamin D and PTH.Nutrients · 2023Article
- Mechanisms Suggesting a Relationship between Vitamin D and Erectile Dysfunction: An Overview.Biomolecules · 2023Review
- Benefits of Vitamin D in Health and Diseases.Nutrients · 2023Article
- Effect of vitamin D supplementation on type 2 diabetes biomarkers: an umbrella of interventional meta-analyses.Diabetology & metabolic syndrome · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 1 institution in 1 country.
Funding
Abstract
Clinical research results of vitamin D supplementation in the improvement of prediabetes remain controversial. Accordingly, a literature search was conducted of PubMed, Embase (Ovid), and Web of Science prior to 9 November 2021. Randomized controlled studies reported that the following indicators were included: body mass index (BMI), fasting blood glucose (FBG), 2 h oral glucose tolerance test plasma glucose (2h-PG), hemoglobin A1c (HbA1c), insulin resistance by homeostasis model assessment (HOMA-IR), homeostasis model assessment of β-cell function (HOMA-B), and fasting insulin (FINS). Twenty-nine articles (
Indexed as
Identifiers
What OpenQuestion holds
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.