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Updated: Feb 7, 2026

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Sleeve Gastrectomy in Mice using Surgical Clips
Published on: November 14, 2020
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Hair Loss After Laparoscopic Sleeve Gastrectomy
Georgia Katsogridaki1, George Tzovaras1, Eleni Sioka2
1Department of Surgery, University Hospital of Larissa, University of Thessaly, Viopolis, 41110, Larissa, Greece.
Obesity Surgery
|August 1, 2018
Summary
Hair loss affects 56% of patients after laparoscopic sleeve gastrectomy (LSG). Low levels of zinc and vitamin B12 are linked to this common side effect, suggesting nutritional monitoring is key.
Area of Science:
- Bariatric Surgery
- Nutritional Science
- Dermatology
Background:
- Laparoscopic sleeve gastrectomy (LSG) is a common bariatric procedure.
- Post-surgical complications, including hair loss, can impact patient outcomes.
- Understanding the factors contributing to hair loss after LSG is crucial for patient management.
Purpose of the Study:
- To determine the prevalence of hair loss following LSG.
- To investigate the association between specific micronutrient levels and the occurrence of hair loss.
- To identify potential risk factors for post-LSG hair loss.
Main Methods:
- A prospective study involving 50 patients who underwent LSG.
- Preoperative and 6-month postoperative evaluation of demographics and key micronutrients (iron, zinc, folic acid, vitamin B12).
- Statistical analysis to compare nutrient levels between patients with and without hair loss.
Main Results:
- Hair loss was reported in 56% of patients (46% female, 10% male).
- Significantly lower preoperative and postoperative levels of zinc and vitamin B12 were observed in patients experiencing hair loss.
- Lower postoperative folic acid levels and increased supplement use were also noted in the hair loss group.
Conclusions:
- The prevalence of hair loss 6 months post-LSG is substantial (56%).
- Preoperative and postoperative deficiencies in zinc and vitamin B12 are strongly associated with post-LSG hair loss.
- Preoperative monitoring and counseling regarding these micronutrients may help prevent or manage hair loss after LSG.
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