ArticleObesity surgery2020
Vitamin D Status After Gastric Bypass or Sleeve Gastrectomy over 4 Years of Follow-up.
Article in Obesity surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis 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
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.
- Effect of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy on Male Sexual Function: A Systematic Review and Meta-Analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026Pooled it
- Comparative Study of Vitamin D Levels After Metabolic Bariatric Surgery in Women Under or Over 45 Years of Age.Obesity surgery · 2026Observational
- Article
- The effect of bariatric surgery on dietary Behaviour, dietary recommendation Adherence, and micronutrient deficiencies one year after surgery.Preventive medicine reports · 2023Article
- Article
- IS THE WAIST/HEIGHT RATIO A BETTER PARAMETER THAN BMI IN DETERMINING THE CARDIOMETABOLIC RISK PROFILE OF OBESE PEOPLE?Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery · 2022Article
- Long-term nutritional deficiencies following sleeve gastrectomy: a 6-year single-centre retrospective study.Przeglad menopauzalny = Menopause review · 2021Article
- Article
- Prevalence of Micronutrient Deficiency after Bariatric Surgery.Obesity facts · 2021Article
- Obesity: A critical risk factor in the COVID-19 pandemic.Clinical obesity · 2020Review
- Micronutrient Deficiencies in Laparoscopic Sleeve Gastrectomy.Nutrients · 2020Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
13 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundBariatric surgery for severe obesity can lead to micronutrient/vitamin deficiencies.
aimsTo study baseline and post-surgical prevalence of vitamin D deficiency in patients undergoing bariatric surgery. PARTICIPANTS AND
settingPatients undergoing bariatric surgery in a university teaching hospital in North West England.
methodsWe performed an observational cohort analysis of longitudinal data on vitamin D and related parameters in patients who underwent bariatric surgery. Patients were routinely recommended daily combined calcium and vitamin D supplementation post-surgery.
resultsWe studied 460 patients who had completed at least 12 months post-operatively; mean (standard deviation) age was 48.0 (10.5) years, weight 144.7 (27.3) kg and body mass index 50.0 (7.6) kg/m
conclusionVitamin D deficiency and insufficiency were prevalent pre-surgery and reduced significantly with routine supplementation post-surgery.
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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.