ArticleBlood advances2020
Iron deficiency following bariatric surgery: a retrospective cohort study.
Article in Blood advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.
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Who cites it
34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 51 citations in OpenAlex.
- Long-Term Outcomes of Iron Deficiency Before and After Bariatric Surgery: a Systematic Review and Meta-analysis.Obesity surgery · 2023Pooled it
- Guideline
- Trial
- Development and Validation of a Machine Learning Model for Predicting One-year Anemia After Bariatric Surgery: A Multicenter Study.Obesity surgery · 2026Article
- Early and Late Complications After Sleeve Gastrectomy and Roux-en-Y Gastric Bypass: A Narrative Review.Journal of metabolic and bariatric surgery · 2026Review
- Anemia Following One Anastomosis Gastric Bypass: A Comparative Study of Diabetic and Non-Diabetic Patients.Obesity surgery · 2026Article
- National Outcomes of Cardiac Surgery in Patients with History of Bariatric Surgery.Obesity surgery · 2026Article
- Laparoscopic sleeve gastrectomy and nutritional deficiency: A comprehensive longitudinal analysis.Journal of minimal access surgery · 2026Article
- An Updated Review on Iron Deficiency Anemia: From Epidemiology to Diagnosis, Etiology, Prevention and Treatment.Journal of blood medicine · 2026Review
- Targeting hepcidin to restore oral iron efficacy after vertical sleeve gastrectomy.Frontiers in nutrition · 2026Article
- Comment on "The Prevalence of Vitamin B12, Hemoglobin, and Ferritin Deficiency in Patients with Morbid Obesity and Changes in their Blood Levels after Bariatric Surgery".International journal of preventive medicine · 2026Article
- Prevalence of Anaemia and Related Micronutrient Deficiencies After Bariatric Surgery.Journal of metabolic and bariatric surgery · 2025Article
- Risk Factors of Iron Deficiency and Iron Deficiency Anemia After Laparoscopic Sleeve Gastrectomy: A Retrospective Cohort Study.Obesity surgery · 2025Article
- Estimation of New Regulators of Iron Metabolism in Short-Term Follow-Up After Bariatric Surgery.International journal of molecular sciences · 2025Article
- Prevalence of Nutrient Deficiencies Following Bariatric Surgery-Long-Term, Prospective Observation.Nutrients · 2025Observational
- Limitations of glycated hemoglobin and emerging biomarkers for diabetes care after bariatric surgery.World journal of diabetes · 2025Article
- Impact of Bariatric Surgery on Postoperative Outcomes, Complications, and Revision Rates in Total Knee Arthroplasty: A Big Data Analysis.Journal of clinical medicine · 2025Article
- Iron Deficiency Anemia Following Bariatric Surgery: A 10-Year Prospective Observational Study.Nutrients · 2025Observational
- Awareness Level of Sleeve Gastrectomy Indications and Complications Among Adults in Saudi Arabia.Materia socio-medica · 2025Article
- The impact of preoperative anemia on postoperative anemia and related nutritional abnormalities after bariatric surgery: a multicenter cohort study.Frontiers in nutrition · 2025Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Iron deficiency is a common consequence of bariatric surgery and frequently leads to anemia. Our study reports the incidence and predictors of iron deficiency, iron deficiency anemia (IDA), and IV iron use after bariatric surgery. We conducted a retrospective study of all adult patients who underwent bariatric surgery from January to December 2012 at the regional bariatric surgery center in Hamilton, Ontario, Canada, and were followed for at least 6 months. Time-to-event data were presented as Kaplan-Meier curves. Cox regression analysis was used to identify outcome predictors. A total of 388 patients met the inclusion criteria. Iron deficiency, IDA, and the use of IV iron were reported in 43%, 16%, and 6% of patients, respectively, with a mean follow-up of 31 months. The cumulative incidence of iron deficiency and IDA increased with longer follow-up, and there was a significant increase in IV iron use starting 3 years after surgery. Malabsorptive procedures (hazard ratio [HR], 1.92; 95% confidence interval [CI], 1.20-3.06; P = .006) and low baseline ferritin (HR, 0.96; 95% CI, 0.95-0.97; P < .001) were associated with an increased risk of iron deficiency. Young age (HR, 0.90; 95% CI, 0.82-0.99; P = .028), baseline anemia (HR, 19.6; 95% CI, 7.85-48.9; P < .001), and low baseline ferritin (HR, 0.96; 95% CI, 0.95-0.98; P < .001) were associated with an increased risk of IDA. Our results suggest that IDA is a delayed consequence of bariatric surgery and that preoperative assessment of patient risk may be possible.
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