research Correlation between changes of amino acid spectrum and alopecia in patients with obesity undergoing bariatric surgery: a prospective cohort study August 2025 in “Frontiers in Nutrition” Leucine levels may affect hair loss after bariatric surgery.
research Self-prescribed nutrition supplements for hair loss following laparoscopic sleeve gastrectomy bariatric surgery: extent of the problem in a cohort of Chinese patients December 2018 in “Journal of Patan Academy of Health Sciences” Many Chinese patients lose hair after weight loss surgery, especially women, and taking iron and zinc on their own doesn't help.
research Hair Loss After Laparoscopic Sleeve Gastrectomy 13 citations , July 2018 in “Obesity surgery” Over half of patients had hair loss after weight-loss surgery, especially women, linked to low zinc and vitamin B12 levels.
research Correlation between changes of nutritional parameter changes and alopecia in patients with obesity undergoing laparoscopic sleeve gastrectomy: a prospective cohort study November 2025 in “International Journal of Surgery” Lower levels of certain nutrients after surgery may increase hair loss risk.
research Hair Loss After Sleeve Gastrectomy and Effect of Biotin Supplements 13 citations , August 2020 in “Journal of Laparoendoscopic & Advanced Surgical Techniques” Biotin supplements are generally ineffective in preventing hair loss after sleeve gastrectomy.