Does PCOS cause infertility?

PCOS is one of the most common causes of infertility, primarily through its effect on ovulation, but this type of infertility responds well to treatment in the majority of cases. Having PCOS does not mean infertility is guaranteed.

The mechanism behind the connection

PCOS disrupts the hormonal signaling required for consistent ovulation, largely driven by insulin resistance and elevated androgens. When ovulation doesn't happen regularly, the number of cycles in which conception is even possible drops, which is the main pathway by which PCOS contributes to infertility. This differs from infertility caused by structural issues like blocked fallopian tubes, which is why PCOS-related infertility often responds so well to ovulation-focused treatment.

RELATED: Assisted reproductive technology: Expanding possibilities for parenthood

What the research suggests

The World Health Organization identifies PCOS as the most common cause of anovulatory infertility worldwide, and the 2023 International Evidence-based Guideline for PCOS reflects this same understanding while dedicating substantial attention to effective treatment pathways. Letrozole, the guideline's first-line recommendation for ovulation induction, produced a 27.5% cumulative live birth rate in a major randomized trial, compared to 19.1% with clomiphene citrate, the previous standard, reported in the Cleveland Clinic Journal of Medicine. For women who don't respond to letrozole alone, metformin, gonadotropins, or in some cases IVF are additional evidence-based options.

Practical Takeaways

• Understand that PCOS-related infertility is largely about irregular ovulation, which is treatable through medication in most cases
• Get baseline labs (insulin, thyroid, AMH) early if you know you have PCOS and are planning to conceive
• Discuss letrozole with your provider as a well-supported first step if ovulation isn't happening consistently
• Address insulin resistance through nutrition and movement alongside any medical treatment, since the two work together
• Know that IVF remains an effective option for the smaller subset of women who don't respond to first- and second-line treatments

When to talk to your provider

If you have PCOS and have been trying to conceive for six months to a year without success (or immediately if you're over 35), a reproductive endocrinologist can evaluate your ovulatory pattern and discuss the most appropriate next step.

Frequently asked questions on PCOS and infertility treatment

Does PCOS make you infertile? 

PCOS causes ovulatory dysfunction, a common and treatable cause of reduced fertility, not permanent infertility.

Is it hard to get pregnant with PCOS? 

For many women, yes, it can take longer, but the overall likelihood of eventually conceiving remains high with appropriate treatment.

PCOS's connection to infertility is well documented, but so is its response to modern fertility treatment, which is genuinely reassuring news for anyone navigating this diagnosis.

A note from WeNatal on PCOS and infertility treatment

For a full look at fertility treatment pathways, including IVF, alongside PCOS, see Assisted reproductive technology: Expanding possibilities for parenthood.