Weight loss surgery for PCOS: A systematic review of hormonal and reproductive outcomes

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Created On: 08/04/2026

Among women of reproductive age, PCOS is a common endocrine disorder that is often connected with obesity and metabolic irregularities.

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Key take away

Bariatric surgery remarkably improves PCOS by reducing menstrual irregularities, hyperandrogenism markers, and hirsutism while increasing SHBG, with no impact on FSH or pregnancy outcomes.

Background

Among women of reproductive age, PCOS is a common endocrine disorder that is often connected with obesity and metabolic irregularities. Conventional PCOS treatment strategies—including lifestyle modification and pharmacological therapy—are frequently limited by poor long-term adherence and potential adverse effects.

Bariatric surgery, including procedures like sleeve gastrectomy, gastric bypass, and gastric banding, has emerged as a potential therapeutic option for improving hormonal imbalance, hyperandrogenism, and fertility outcomes in PCOS. This systematic review and meta-analysis explored the potency of bariatric surgery in tackling key clinical and biochemical features of PCOS.

Method

An extensive literature search was carried out across Web of Science, PubMed/MEDLINE, Google Scholar, and Cochrane Library from database inception. Targeted keywords included bariatric surgery, sleeve gastrectomy, gastric bypass, gastric banding, PCOS, menstrual irregularities, hirsutism, free testosterone, total testosterone, sex hormone-binding globulin (SHBG), luteinizing hormone (LH), anti-Müllerian hormone (AMH), follicle-stimulating hormone (FSH), and preterm delivery. Out of 648 identified studies, 35 full-text articles were screened, and 27 studies fulfilled the inclusion criteria for the final meta-analysis.

Result

Bariatric surgery illustrated remarkable improvements in key PCOS symptoms and hormonal markers. There was a marked reduction in menstrual irregularities (odds ratio [OR] 27.68) and hirsutism (OR 6.61).

Remarkable decreases were also noted in total testosterone, free testosterone, AMH, and LH, alongside a notable rise in SHBG levels. However, no prominent changes were found in FSH, birth weight, gestational age, or rates of preterm delivery.

Conclusion

Bariatric surgery appeared to be a valuable intervention for improving hormonal imbalance, decreasing hyperandrogenism, and alleviating clinical symptoms like menstrual irregularities and hirsutism in PCOS.

Despite these promising outcomes, there is limited evidence regarding its impact on pregnancy outcomes and long-term metabolic health. Further trials are fundamental to better comprehend the mechanisms and sustained benefits of bariatric surgery in PCOS.