Comparative Analysis of Postoperative Hair Loss and Micronutrient Deficiencies After One-Anastomosis Gastric Bypass Versus Sleeve Gastrectomy

    March 2026 in “ Obesity Surgery ”
    Fatemeh Chinisaz, Tahereh Maleki, Khosrow Najjari, Seyed Amir Miratashi Yazdi
    Studysummary This study found that hair loss after metabolic and bariatric surgery peaks at 3 months and improves by 6 months, with iron deficiency and female sex being strong predictors of hair loss.
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    Research cited in this study 7

    1. Telogen Effluvium in Patients After Bariatric Surgery: A Scoping Review Brazilian Journal of Clinical Medicine and Review · 2024
    2. Hair Loss After Metabolic and Bariatric Surgery: A Systematic Review and Meta-Analysis Obesity surgery · 2021
    3. Hair Loss in Sleeve Gastrectomy Subjects: Effects of Designed Supplements for Nutritional Deficiencies 2021
    4. Hair Loss After Sleeve Gastrectomy and Effect of Biotin Supplements Journal of Laparoendoscopic & Advanced Surgical Techniques · 2020
    5. What Are the Micronutrient Deficiencies Responsible for the Most Common Nutritional Symptoms After Bariatric Surgery? Obesity Surgery · 2020
    6. Hair Pull Test: Evidence-Based Update and Revision of Guidelines Journal of The American Academy of Dermatology · 2016
    7. Hair Loss in Females After Sleeve Gastrectomy: Predictive Value of Serum Zinc and Iron Levels The American Surgeon · 2014