Understanding PCOS and Its Impact on Fertility
Polycystic Ovary Syndrome (PCOS) is one of the most common hormonal conditions affecting women of reproductive age — and one of the leading causes of infertility.
Around 1 in 10 women in the UK have PCOS, though many remain undiagnosed. The condition affects how the ovaries work, often preventing eggs from maturing or being released during ovulation.
But while PCOS can make conceiving more difficult, it doesn’t mean pregnancy is impossible. With the right diagnosis, treatment, and support, many women with PCOS go on to conceive naturally or with medical assistance such as ovulation induction, IUI, or IVF.
What Causes PCOS?
The exact cause isn’t fully understood, but PCOS is linked to hormonal imbalance — particularly higher levels of androgens (male hormones) and insulin resistance.
These imbalances can disrupt ovulation and cause symptoms such as:
- Irregular or absent periods
- Excess hair growth on the face or body (hirsutism)
- Acne or oily skin
- Weight gain or difficulty losing weight
- Thinning hair or hair loss on the scalp
- Multiple small follicles seen on ultrasound (“polycystic” ovaries)
It’s also associated with metabolic issues such as insulin resistance, type 2 diabetes, and weight-related inflammation, which can further affect fertility.
How PCOS Affects Fertility
For conception to occur, an egg must be released from the ovary (ovulation). In PCOS, hormonal imbalances often cause the ovaries to develop many small follicles that don’t mature properly.
This means:
- Ovulation may happen less frequently or not at all
- Cycles may be irregular or unpredictable
- The uterine lining may not develop at the right time to support implantation
The good news? Even if ovulation doesn’t occur naturally, it can often be restored through treatment — either medically or with targeted lifestyle changes.
Diagnosing PCOS
Diagnosis is usually based on the Rotterdam criteria, which require two of the following three signs:
- Irregular or absent ovulation
- Excess androgen levels (via blood tests or symptoms like acne or excess hair)
- Polycystic ovaries visible on ultrasound
You can be diagnosed with PCOS even if you don’t have all three features.
Your GP or fertility specialist may also run additional tests to check thyroid, prolactin, and insulin levels, as these can influence fertility too.
PCOS Fertility Treatments in the UK
The best treatment plan depends on your symptoms, weight, and whether you’re actively trying to conceive.
1. Lifestyle and Weight Management
Even a 5–10% weight reduction can help regulate hormones and restore ovulation in women who are overweight.
Focus on:
- Balanced, low-GI diet (whole grains, lean protein, fruit, and veg)
- Regular moderate exercise (brisk walking, cycling, swimming)
- Stress management (yoga, mindfulness, adequate sleep)
2. Medication to Induce Ovulation
If lifestyle changes alone don’t lead to regular ovulation, fertility specialists may prescribe:
- Letrozole (Femara) – now the NHS’s first-line ovulation drug for PCOS
- Clomifene citrate (Clomid) – an alternative medication that stimulates egg release
- Metformin – improves insulin sensitivity and can regulate cycles when combined with ovulation drugs
These treatments are available through both NHS and private fertility clinics, depending on eligibility.
3. Intrauterine Insemination (IUI)
If ovulation medications aren’t successful, IUI may be used. Sperm is inserted directly into the uterus at the time of ovulation to increase the chance of fertilisation.
IUI is minimally invasive and often combined with ovulation induction medication for higher success rates.
4. IVF for PCOS
In some cases — particularly when other treatments fail — in vitro fertilisation (IVF) may be recommended.
IVF can be highly effective for women with PCOS because eggs can be retrieved and fertilised outside the body, bypassing ovulation issues. However, careful medication monitoring is essential, as women with PCOS are more prone to Ovarian Hyperstimulation Syndrome (OHSS).
Your specialist may suggest a “mild” or “antagonist” IVF protocol to reduce this risk.
5. Ovarian Drilling (Surgical Option)
For some women, a minor keyhole procedure called laparoscopic ovarian drilling can help trigger regular ovulation.
It’s usually considered only if medication hasn’t worked, and is performed under general anaesthetic.
NHS vs Private Treatment
Many PCOS fertility treatments, including ovulation induction and initial investigations, are available through the NHS.
However, eligibility for funded IVF or IUI varies by Integrated Care Board (ICB).
Private fertility clinics offer shorter waiting times, advanced treatment options, and more flexibility — though costs can range from £4,000 to £7,000 per IVF cycle.
Before starting, it’s worth checking if you qualify for NHS-funded IVF or shared-care pathways, where diagnostics are covered and you self-fund the rest.
PCOS Fertility Success Rates
With proper treatment, the outlook is positive. According to the HFEA (Human Fertilisation and Embryology Authority):
- Around 70–80% of women with PCOS can achieve ovulation using medication.
- With IVF, success rates are comparable to or slightly higher than average, as women with PCOS often have a good number of eggs available for collection.
Many women conceive naturally once cycles are restored, while others succeed through IUI or IVF after medication support.
Real Success Stories
“After years of irregular periods, I finally conceived six months after starting Letrozole. My daughter is now two — proof that PCOS doesn’t have to mean infertility.”
— Sarah, 33, Manchester
“I was diagnosed with PCOS at 28. After two failed Clomid cycles, we tried IVF through the NHS. Our twins were born the following year — it was worth every appointment.”
— Amelia, 35, Glasgow
These stories show that, with patience and the right care, conception is possible — often sooner than expected.
Final Thoughts
PCOS can feel overwhelming, especially when you’re trying to conceive — but it’s a treatable condition with many proven fertility solutions.
From hormone-regulating medications to IVF and lifestyle support, today’s fertility treatments give women with PCOS a real chance to become parents.
If you suspect PCOS or are struggling to conceive, talk to your GP or an HFEA-licensed fertility clinic. Early diagnosis and a tailored treatment plan can make all the difference.