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Updated: Aug 7, 2026
07:37
Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
Menstrual and Reproductive Function Before and After Metabolic Bariatric Surgery
Martin Whyte1, Stephanie Attersley-Smith2,3, Kathryn Hart2
1University of Surrey, Guildford, UK. m.b.whyte@surrey.ac.uk.
Obesity Surgery
|August 5, 2026
Summary
Metabolic bariatric surgery significantly improves reproductive health in women by reducing excess weight, normalizing hormones, and enhancing menstrual regularity. This suggests improved fertility, underscoring the need for integrated reproductive care post-surgery.
Area of Science:
- Reproductive Endocrinology
- Bariatric Surgery Outcomes
- Obesity Medicine
Background:
- Obesity negatively impacts female reproductive health, affecting menstrual function and hormonal balance.
- Metabolic bariatric surgery (MBS) leads to substantial weight loss, but its effects on reproductive parameters require detailed evaluation.
- Women of reproductive age undergoing MBS often have fertility-related concerns and pregnancy intentions.
Purpose of the Study:
- To assess the impact of MBS on menstrual function in women of reproductive age.
- To evaluate changes in hormonal profiles, including androgens and AMH, following MBS.
- To investigate the effects of MBS on ovarian morphology and reproductive health indicators.
Main Methods:
- Prospective cohort study involving women (18-45 years) undergoing Roux-en-Y gastric bypass or sleeve gastrectomy.
- Comparison with a control group of women with obesity receiving non-surgical weight management.
- Clinical, biochemical, ultrasonographic, and questionnaire-based assessments conducted up to 24 months post-intervention.
Main Results:
- Significant excess weight loss (64-73%) observed by 24 months post-MBS.
- Post-surgery hormonal changes included decreased Anti-Mullerian Hormone (AMH) and free androgen index (FAI), with increased sex hormone-binding globulin (SHBG).
- Improvements noted in menstrual regularity, hirsutism, and polycystic ovarian morphology; 20 pregnancies occurred within 12-24 months post-MBS.
Conclusions:
- Metabolic bariatric surgery is associated with significant weight loss and improvements in reproductive health parameters, including hormonal balance and ovarian morphology.
- Findings suggest potential enhancement of fertility-related parameters following MBS.
- Integrated reproductive counseling and preconception care are recommended within bariatric surgery pathways due to high pregnancy intentions.
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