Fertility after Bariatric Surgery

Obesity is a known contributor to infertility, affecting both men and women. Bariatric surgery has been shown to improve fertility outcomes:

• Improved Ovulatory Function: Studies indicate that over 75% of individuals experience improved ovulatory function, menstrual regularity, or spontaneous pregnancy following surgery.
• Enhanced Hormonal Balance: Post-surgery hormonal normalization can lead to restored menstrual cycles and improved fertility.
• Positive Impact on Assisted Reproductive Technologies (ART): Bariatric surgery may improve ovarian response to stimulation and embryo quality, potentially increasing the chances of successful live birth outcomes in ART.

Pregnancy outcomes post-surgery are generally positive. Bariatric surgery is becoming more common, with increased research and observation of this area allowing for reporting on both benefits and risks:

Benefits

• Reduced Risk of Obesity-Related Complications: Post-surgical pregnancies are associated with a lower incidence of gestational diabetes, hypertension, and macrosomia (large for birthweight babies which is associated with its own long term risks).
• Improved Fertility in Obese Women: Bariatric surgery is an effective treatment for increasing fertility and pregnancy outcomes in obese women, particularly those with polycystic ovary syndrome (PCOS).

Risks

• Nutritional Deficiencies: There is an increased risk of micronutrient deficiencies, such as iron and vitamin B12, which can impact maternal and foetal health. It is important to stay in close contact with your treating team to ensure close monitoring and supplementation as required.
• Small for Gestational Age (SGA) Infants: Some studies have raised concerns about the possibility of SGA newborns, particularly following Roux-en-Y gastric bypass procedures and often within the first 12-18 months post-surgery.

Recommendations for Optimal Outcomes

• Timing of Conception: It is generally recommended to wait 12 to 18 months after bariatric surgery before attempting conception. This period allows for weight stabilization and nutritional recovery, reducing potential risks to maternal and fetal health.
• Nutritional Monitoring: Regular monitoring of nutritional status and appropriate supplementation are advised to prevent deficiencies that could affect pregnancy outcome. This should be closely monitored by your treating team.
• Preconception Counselling: Engaging in preconception care, including discussions about timing, nutrition, and potential risks, is crucial for individuals planning pregnancy after bariatric surgery.

In summary, bariatric surgery can enhance fertility and improve certain pregnancy outcomes in individuals with obesity. However, careful planning, timing, and nutritional management are essential to optimize maternal and foetal health.