Does high BMI and obesity reduce IVF success rates?

Question

Hello doctor,

I am 29 and have been dealing with obesity since my college years. Despite trying various diets and exercise routines, I have not been able to maintain long-term results. Recently, my menstrual cycles have become irregular, and I am growing concerned about how this might impact my fertility.

My partner and I are considering IVF, but I have read that having a high BMI can lower the chances of success. Is that true? I also want to know whether it is safe to take weight-loss medications while planning for pregnancy. How exactly does obesity affect menstrual cycles and ovulation? And if I do manage to lose weight, will it increase my chances of conceiving naturally or improve my outcome with IVF? Please help.

Thank you.

Answer 1

Hi,

Welcome to icliniq.com.

I read your query and can understand your concern.

Obesity (excess body fat) can significantly impact fertility by causing hormonal imbalances that lead to irregular menstrual cycles and disrupted ovulation, making it more difficult to conceive naturally. A high body mass index (BMI) has also been shown to lower the success rates of assisted reproductive treatments like IVF (in vitro fertilization, a fertility treatment where an egg is fertilized by sperm outside the body and then implanted into the uterus).

Effect of obesity on fertility: Extra body fat can affect hormone levels, interfering with the normal functioning of the reproductive system. This may result in fewer ovulation cycles or poor egg quality.
BMI (body mass index) and IVF outcomes: Research shows that a higher BMI is linked to lower success rates with IVF. Women with a healthy weight often have better outcomes. Achieving a healthier weight before undergoing IVF may improve your chances of a successful pregnancy.
Weight-loss medications and pregnancy: If you are planning to get pregnant, it is essential to speak with a doctor before starting any weight-loss medications. Some are not safe during pregnancy or while trying to conceive.

Benefits of weight loss: Losing even a small amount of weight can help regulate periods, improve ovulation (release of a mature egg from the ovary, usually occurring once a month, and is essential for natural conception), and boost natural fertility and IVF success rates.

I hope this helps.

Please revert in case of further queries.

Thank you.