SynthesisObesity surgery2022
Vitamin B Complex Deficiency After Roux-en-Y Gastric Bypass and Sleeve Gastrectomy-a Systematic Review and Meta-Analysis.
Synthesis in Obesity surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.
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Who cites it
16 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Long-term prevalence of vitamin deficiencies after bariatric surgery: a meta-analysis.Langenbeck's archives of surgery · 2024Pooled it
- Care of Patients After Bariatric Surgery in the Periconceptional and Perinatal Periods.Nutrients · 2026Review
- Nutritional status and its determinants in obese patients with type 2 diabetes mellitus following Roux-en-Y gastric bypass surgery.BMC surgery · 2026Article
- Temporal changes in post-bariatric nutritional deficiency anemia: a propensity score-matched analysis of 2015-2017 versus 2022-2023 cohorts.Frontiers in nutrition · 2026Article
- Recent Advances in Metabolic and Bariatric Surgery: A Narrative Review of Therapeutic Strategies for Weight Loss and Metabolic Health.Diabetes, metabolic syndrome and obesity : targets and therapy · 2026Review
- Metabolically healthy status in childhood obesity fails to protect against vitamin B12 deficiency.Scientific reports · 2025Article
- Prevalence of Nutrient Deficiencies Following Bariatric Surgery-Long-Term, Prospective Observation.Nutrients · 2025Observational
- Therapeutic potential of gastro-gastric fistulas created via lumen-apposing metal stents for nutritional deficiencies after roux-en-y gastric bypass.Endoscopy international open · 2025Article
- Micronutrient Status in Patients with Severe Obesity Before and After Laparoscopic Sleeve Gastrectomy.Nutrients · 2024Article
- Multiple micronutrient deficiencies as a long-term complication of bariatric surgery.BMJ case reports · 2023Article
- Article
- [Postoperative management].Wiener klinische Wochenschrift · 2023Article
- Micronutrients Deficiencies in Candidates of Bariatric Surgery: Results from a Single Institution over a 1-Year Period.Obesity surgery · 2023Article
- The Effect of Laparoscopic Sleeve Gastrectomy on Serum Levels of Vitamin A, D and B12 and Iron Profile on Patients with Morbid Obesity.Advanced biomedical research · 2023Article
- Nutritional Deficiencies 3 Years After Sleeve Gastrectomy Can Be Limited by a Specialized Multivitamin Supplement.Obesity surgery · 2022Article
- Risk Factors and Comorbidities Associated With Vitamin BJournal of primary care & community healthArticle
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Bariatric surgery, although an effective method, still has complications, like nutritional deficiencies. Our aim was to summarize the evidence on the frequency of complex B vitamin deficiencies in studies comparing Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). We included 25 studies for qualitative synthesis and 21 studies for quantitative synthesis. Relevant data was extracted, including proportion of patients with deficiency and mean serum vitamin values in 3 different timeframes. B12 and folate were the most prevalent deficiencies. B12 deficiency was more common after RYGB and folate serum mean levels were higher after RYGB. SG causes less nutrient deficiency and is therefore a better technique from this point of view. More studies are needed on B2, B3, and B6 vitamins to draw better conclusions.
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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.