SynthesisReviews in endocrine & metabolic disorders2023
Vitamin D status and supplementation before and after Bariatric Surgery: Recommendations based on a systematic review and meta-analysis.
Synthesis in Reviews in endocrine & metabolic disorders, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 41 papers, 3 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
41 citing papers in PubMed, 3 syntheses or guidelines pooled it, 49 citations in OpenAlex.
- Diagnosis and treatment of chronic abdominal pain after bariatric surgery: a systematic review.Surgical endoscopy · 2026Pooled it
- A systematic review of evidence-based clinical guidelines for vitamin D screening and supplementation over the last decade.Archives of public health = Archives belges de sante publique · 2025Pooled it
- The Role of Vitamin D Supplementation in Enhancing Muscle Strength Post-Surgery: A Systemic Review.Nutrients · 2025Pooled it
- Nutritional deficiencies after sleeve gastrectomy and Roux-en-Y gastric bypass at 10 years: secondary analysis of the SLEEVEPASS randomized clinical trial.The British journal of surgery · 2025Trial
- Pancreatic Enzyme Replacement Leads to Increased Vitamin D Uptake in Patients Undergoing Sleeve-gastrectomy - A Prospective, Monocentric Trial.Obesity surgery · 2024Trial
- Vitamin D: Physiology, Pharmacology and Clinical Evidence for Supplementation-A Narrative Review.Basic & clinical pharmacology & toxicology · 2026Review
- Article
- Why Do We Lose Bone During Weight Loss: Can It Be Prevented?Current osteoporosis reports · 2026Review
- Review
- Prediabetes: diagnostic aspects, clinical features, and emerging therapeutic opportunities, with a focus on Vitamin D.Journal of endocrinological investigation · 2026Article
- Review
- Effects of Metabolic Bariatric Surgery On Micronutrient Status in Chinese Patients With Obesity: A 12-month Follow-up Study.Obesity surgery · 2026Article
- Chronic cholecalciferol supplementation and adequate vitamin D status are associated with reduced risk of Long COVID.Journal of endocrinological investigation · 2026Article
- Nutritional Status in Chinese Patients Undergoing Bariatric Surgery: A Retrospective 1-Year Follow-Up Study.Obesity surgery · 2026Article
- Article
- From the Vitamin D Paradox to Precision Nutrition: Targeted Supplementation, Assay Pitfalls, and Clinical Decision-Making.Current nutrition reports · 2026Review
- Vitamin D Deficiency and 3-Year Risk of New-Onset Depression After Metabolic and Bariatric Surgery: A Longitudinal Cohort Study.Obesity surgery · 2026Article
- Prehabilitation in Obese Patients with Ventral Hernia: A Narrative Review and Proposal of a Clinical Algorithm.Journal of clinical medicine · 2026Review
- Multidisciplinary expert evaluation of large language models on questions regarding bariatric surgery: a comparative analysis of ERNIE Bot 4.0, ChatGPT-4, Claude 3 Opus, and Gemini Pro.Scientific reports · 2026Article
- Secondary Hyperparathyroidism in Post-Bariatric Population: A Descriptive Analysis.Obesity surgery · 2026Article
Corrections and comments
- Erratum issued
Authors and funding
29 authors at 20 institutions in 10 countries.
Funding
Abstract
Bariatric surgery is associated with a postoperative reduction of 25(OH) vitamin D levels (25(OH)D) and with skeletal complications. Currently, guidelines for 25(OH)D assessment and vitamin D supplementation in bariatric patients, pre- and post-surgery, are still lacking. The aim of this work is to analyse systematically the published experience on 25(OH)D status and vitamin D supplementation, pre- and post-surgery, and to propose, on this basis, recommendations for management. Preoperatively, 18 studies including 2,869 patients were evaluated. Prevalence of vitamin D insufficiency as defined by 25(OH)D < 30 ng/mL (75 nmol/L) was 85%, whereas when defined by 25(OH)D < 20 ng/mL (50 nmol/L) was 57%. The median preoperative 25(OH)D level was 19.75 ng/mL. After surgery, 39 studies including 5,296 patients were analysed and among those undergoing either malabsorptive or restrictive procedures, a lower rate of vitamin D insufficiency and higher 25(OH)D levels postoperatively were observed in patients treated with high-dose oral vitamin D supplementation, defined as ≥ 2,000 IU/daily (mostly D3-formulation), compared with low-doses (< 2,000 IU/daily). Our recommendations based on this systematic review and meta-analysis should help clinical practice in the assessment and management of vitamin D status before and after bariatric surgery. Assessment of vitamin D should be performed pre- and postoperatively in all patients undergoing bariatric surgery. Regardless of the type of procedure, high-dose supplementation is recommended in patients after bariatric surgery.
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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.