PCOS/PMOS and Menopause: What happens when two hormonal conditions meet

PCOS (Polycystic Ovary Syndrome) is now increasingly being referred to as PMOS (Polyendocrine Metabolic Ovarian Syndrome), reflecting a broader understanding that the condition extends beyond the ovaries and reproductive years. The updated terminology recognises that it is a lifelong hormonal and metabolic condition, often associated with insulin resistance, cardiovascular risk, and long-term metabolic health concerns that can persist after menopause. The change also acknowledges that many women with PCOS do not actually have ovarian cysts, making the older name somewhat misleading.

Now let’s get into understanding how PMOS evolves as you approach menopause, and what it means for your long-term health.

Key takeaways

• PMOS doesn't disappear at menopause, it's a lifelong condition, but the way it affects you will change as hormone levels shift.
• Women with PMOS typically reach menopause around 2 years later than women without the condition.
• While some reproductive symptoms may improve (irregular periods resolve, acne often lessens), the long-term health risks linked to PMOS, such as diabetes, high cholesterol, and heart disease, can become more important after menopause.
• The overlap between PMOS symptoms and menopause symptoms can make diagnosis tricky during perimenopause, specialist input helps distinguish one from the other.
• After menopause, women with PMOS have a higher risk of cardiovascular disease. One study found the odds were 64% higher compared with women without PMOS.
• HRT is generally safe and beneficial for women with PMOS, it can actually help reduce your risk of type 2 diabetes and cardiovascular disease.

If you've lived with PMOS for years, you might be wondering what happens when you hit menopause. Does PMOS finally go away? Do the symptoms get better or worse? And how do you tell the difference between PMOS symptoms and menopause symptoms when both involve irregular periods, weight gain, and mood changes?

These are excellent questions, and ones that don't get asked often enough. Around 8-13% of women of reproductive age have PMOS, which means roughly 1 in 10 women navigating menopause are doing so with PMOS in the background [3]. Yet PMOS and menopause is rarely discussed as a combined challenge, leaving many women without clear guidance at a time when they need it most.

This article breaks down exactly what happens when PMOS meets menopause: how the condition evolves, which symptoms overlap, what the evidence says about long-term health risks, and how specialist care can help you navigate both. Whether you're approaching perimenopause with a longstanding PMOS diagnosis or wondering if PMOS might explain some of what you're experiencing now, you'll find evidence-backed answers here.

What is PMOS? A quick reminder

Polycystic ovary syndrome (PMOS) is a hormonal condition affecting how the ovaries work. Despite the name, not all women with PMOS have cysts on their ovaries, and having ovarian cysts doesn't automatically mean you have PMOS.

PMOS is diagnosed using the Rotterdam criteria, updated by international experts led by Monash University. You may be diagnosed with PMOS if you have two out of the following three features:

1. Irregular or infrequent periods

For example, having fewer than 8 periods a year or cycles longer than 35 days. During perimenopause, this can be harder to assess, as periods often become irregular naturally.

2. Higher levels of “male-type” hormones (androgens)

This can show up in blood tests, or as symptoms such as acne, excess facial or body hair, or thinning hair on the scalp.

3. Polycystic ovaries on ultrasound

This means the ovaries look slightly different on a scan. However, this is not always needed for diagnosis, especially in midlife.

The underlying drivers of PMOS are complex. Insulin resistance plays a central role in most cases, your body produces insulin, but your cells don't respond to it effectively, leading to higher insulin levels that can stimulate the ovaries to produce more androgens. This hormonal imbalance disrupts ovulation, causes irregular periods, and contributes to many of the symptoms women experience.

PMOS isn't just about periods and fertility. It's associated with increased risk of type 2 diabetes, cardiovascular disease, non-alcoholic fatty liver disease, and metabolic syndrome. These risks don't disappear when you stop ovulating.

How does PMOS change as you approach menopause?

Here's what happens: PMOS evolves from primarily a reproductive condition in your 20s and 30s to increasingly a metabolic condition as you age. The reproductive symptoms that define your experience of PMOS (irregular periods, difficulty conceiving, acne) may improve or even resolve. But the metabolic features (insulin resistance, weight gain, inflammation, lipid abnormalities) often persist and can worsen.

During your reproductive years, high levels of androgens (testosterone and related hormones) drive many PMOS symptoms. As you approach menopause, androgen levels naturally decline in all women. For women with PMOS, this means:

• Periods may become more regular in the years leading up to menopause as ovulation patterns shift
• Hirsutism (excess hair growth) often improves as androgen levels drop, though existing hair may not disappear
• Acne typically lessens for the same reason
• Testosterone levels remain relatively higher than in women without PMOS, even though absolute levels are falling

But here's the critical part: while some symptoms improve, others don't. Insulin resistance is one of the core features of PMOS, this persists through perimenopause and beyond. The drop in oestrogen that defines menopause actually makes insulin resistance worse, which is why many women with PMOS find weight management increasingly difficult during this transition, even if their diet and activity levels haven't changed.

The inflammatory state associated with PMOS also continues after menopause. Research shows that markers of chronic low-grade inflammation remain elevated in postmenopausal women with a history of PMOS. This persistent inflammation is one reason why cardiovascular and metabolic risks stay elevated, and in some cases increase after the menopause transition.

Does menopause make PMOS go away?

No. PMOS is a lifelong condition, though the way it affects you will change over time.

The confusion comes from the fact that some PMOS symptoms, particularly those driven by high androgens and ovulation dysfunction, do improve naturally as you approach and pass through menopause. If your main PMOS symptoms were irregular periods and acne, you might feel like the condition has "resolved" once your periods stop and your skin clears. But PMOS itself and the underlying hormonal and metabolic dysfunction, doesn't go away just because you're no longer ovulating.

Think of it this way: PMOS shifts from a reproductive syndrome to a metabolic syndrome. During your reproductive years, PMOS primarily impacts your periods, fertility, and androgen-related symptoms. After menopause, it primarily affects your metabolic health, your risk of diabetes, cardiovascular disease, and weight management challenges.

This is why women with PMOS need ongoing medical monitoring even after menopause. The condition hasn't disappeared, it's expressing itself differently. Blood pressure checks, lipid panels, glucose monitoring, and cardiovascular risk assessment become increasingly important in the decades after your final period.

How PMOS affects when menopause starts

If you have PMOS, you'll likely reach menopause slightly later than women without the condition, around 2 years later on average.

This makes sense when you consider the biology: women with PMOS typically have more follicles (immature eggs) in their ovaries, which means the ovarian reserve is depleted more slowly. The exact mechanisms aren't fully understood, but the net effect is that your reproductive years extend slightly longer.

The average age of natural menopause in the UK is around 51. Women with PMOS tend to reach menopause closer to 52-53. That might not sound like a big difference, but it can matter when you're trying to understand whether what you're experiencing is perimenopause or something else, particularly if you're in your late 40s and assuming menopause should be imminent.

That said, there's significant individual variation. Some women with PMOS reach menopause at typical ages, while others may experience it later. The later menopause timing is an average, not a rule.

Symptoms: What's PMOS and what's menopause?

One of the biggest challenges during perimenopause is that PMOS and menopause symptoms often overlap. Weight changes, mood symptoms, sleep disruption, fatigue, brain fog, and irregular periods can all occur in both conditions, making it difficult to know exactly what is driving what.

“Rather than thinking of symptoms as belonging neatly to either PMOS or menopause, it is often more helpful to look at patterns over time. For example, if you have had longstanding PMOS symptoms such as irregular periods, excess hair growth, acne, or insulin resistance, and then begin developing new symptoms like hot flushes, night sweats, vaginal dryness, or worsening sleep, this may suggest perimenopause is also playing a role.”

Katy Jackson, Clinical Director - Women's Health

For some, symptoms that were previously stable suddenly become more difficult to manage during your 40s. Weight may redistribute more around the abdomen, mood changes may intensify, periods may become more unpredictable, or fatigue may feel more pronounced. The difficulty is that hormonal fluctuations during perimenopause can amplify symptoms that already existed with PMOS.

Blood tests are not always helpful during this stage because hormone levels can fluctuate significantly from day to day. In practice, symptom patterns, age, menstrual changes, and your wider medical history are often more informative than any single test result.

This overlap and uncertainty can feel frustrating, but it is also very common. A specialist assessment can help identify which symptoms are most likely to be hormonally driven and which treatments are most likely to help.

Long-term health risks of PCOS/PMOS after menopause

This is the section that really matters. Women with PMOS face significantly higher cardiovascular and metabolic disease risks after menopause, risks that many women (and many healthcare providers) aren't fully aware of.

Cardiovascular disease risk

The evidence is clear and consistent: women with PMOS have elevated cardiovascular disease (CVD) risk that persists and potentially increases after menopause.

A major study presented at the American Society for Reproductive Medicine (ASRM) conference in 2020 analysed data from the Study of Women's Health Across the Nation (SWAN). This is a large, long-running cohort study. The findings: women with a PMOS diagnosis prior to menopause had a 64% increased risk of cardiovascular events after menopause, even after controlling for BMI, smoking, and other risk factors.

More recently, a 2025 position statement from the European Group on Obesity and Infertility (EGOI) reviewed the accumulated evidence and confirmed that women with PMOS are more than twice as likely to develop cardiovascular disease as women without PMOS. What's particularly striking is that the divergence in cardiovascular risk starts around age 35 and continues to widen through the menopausal transition and beyond.

In menopausal women (over 55 years), cardiovascular disease becomes more clinically apparent in those with a history of PMOS, though cardiometabolic abnormalities (high blood pressure, dyslipidaemia, insulin resistance) are present throughout life.

The mechanisms behind this increased risk are multifactorial:

• Persistent insulin resistance drives metabolic dysfunction
• Chronic low-grade inflammation continues after menopause
• Lipid abnormalities (high triglycerides, low HDL cholesterol) worsen with declining oestrogen
• Central obesity (fat stored around the abdomen and internal organs) increases
• Hyperandrogenism, even at lower absolute levels, continues to affect cardiovascular health

Type 2 Diabetes risk

Women with PMOS are at markedly increased risk of developing type 2 diabetes, and this risk doesn't decrease with menopause.

Women with PMOS are recognised as having a significantly elevated risk of developing type 2 diabetes, often at a much earlier age than women without the condition, making lifelong monitoring essential. PMOS is recognised as a progressive metabolic disease with significantly increased risk of developing impaired glucose tolerance, gestational diabetes, and type 2 diabetes. Insulin resistance can present in up to 70% of women with PMOS. This can persist through perimenopause and worsens with the oestrogen decline of menopause. This is why weight management often becomes harder during this transition, even with unchanged lifestyle habits.

Treatment options for PMOS during menopause

The good news: effective treatments exist for both PMOS and menopause, and in many cases, the same interventions help with both conditions.

Hormone replacement therapy (HRT)

If you have PMOS and you're experiencing menopause symptoms, HRT is generally safe, and beneficial for your long-term metabolic health.

There's a common misconception that women with PMOS can't take HRT because of the hormone imbalance associated with the condition. This isn't true. Most women with PMOS can safely take HRT, and there are compelling reasons why they should consider it.

HRT replaces the oestrogen and progesterone that decline during menopause. For women with PMOS, this offers several benefits:

• Reduces cardiovascular disease risk — oestrogen has protective effects on the cardiovascular system
• Reduces type 2 diabetes risk — oestrogen improves insulin sensitivity
• Treats menopause symptoms effectively — hot flushes, night sweats, vaginal dryness, mood changes, sleep disruption
• Protects bone health — women with PMOS aren't immune to osteoporosis risk after menopause

Research shows that HRT use is associated with lower rates of type 2 diabetes in menopausal women, which is particularly relevant for women with PMOS given their elevated baseline risk. The British Menopause Society supports HRT use in women with PMOS, with treatment tailored to individual needs and risk factors.

Your specialist will assess your medical history including any history of blood clots, breast cancer, or cardiovascular disease to determine the most suitable type and dose of HRT for you. But having PMOS itself is not a contraindication.

Testosterone replacement

This one surprises many women: testosterone replacement can be appropriate during menopause even if you had high testosterone levels during your reproductive years.

Here's the paradox: women with PMOS have elevated testosterone during their reproductive years, often causing hirsutism, acne, and other androgen-related symptoms. But as you approach and pass through menopause, testosterone levels decline, just as they do in all women. While your testosterone may remain relatively higher than in women without PMOS, absolute levels fall, and many women experience symptoms of testosterone deficiency: low libido, reduced energy, brain fog, and loss of motivation.

Testosterone is increasingly recognised as an important part of menopause care for women experiencing these symptoms. The British Menopause Society guidelines support testosterone therapy for women with low sexual desire that's causing distress, and there's no reason women with a history of PMOS should be excluded from this option if they have deficiency symptoms.

Your specialist will assess your testosterone levels through a blood test and evaluate your symptoms. If testosterone replacement is appropriate, it's typically prescribed as a gel or cream applied to the skin. Doses for women are much lower than those used in men, and treatment is monitored with regular blood tests to ensure levels stay within the appropriate range.

Lifestyle interventions (with a metabolic focus)

Lifestyle changes remain foundational for managing both PMOS and menopause, particularly given the persistent insulin resistance that characterises PMOS through the menopausal transition.

Diet: The Mediterranean diet is recommended by the British Menopause Society for women with PMOS during menopause. This eating pattern, rich in vegetables, fruits, whole grains, legumes, nuts, olive oil, and fish has been shown to improve insulin sensitivity, reduce inflammation, and support cardiovascular health.

Exercise: Regular physical activity improves insulin sensitivity, supports weight management, and reduces cardiovascular risk. All priorities for women with PMOS during menopause. Both aerobic exercise (walking, cycling, swimming) and resistance training (weights, bodyweight exercises) are beneficial. The goal is consistency rather than intensity: 150 minutes of moderate activity per week is the evidence-based target.

Weight management: This is often the most challenging aspect. The combination of insulin resistance from PMOS and declining oestrogen from menopause creates a perfect storm for weight gain, particularly around the abdomen. If lifestyle changes alone aren't leading to meaningful weight loss, it's worth discussing medication options with a specialist. Metformin (see below) can help, and newer weight loss medications may be appropriate for some women.

Metformin: Do you still need them?

Some women with PMOS are prescribed medications such as metformin to help with insulin resistance. As you move through perimenopause and beyond, it’s natural to wonder whether these are still needed.

For some women, continuing metformin can still be helpful, particularly if insulin resistance, weight changes, or blood sugar levels remain a concern. However, evidence in postmenopausal women with PMOS is still evolving, so treatment should always be reviewed on an individual basis.

More broadly, the focus in midlife often shifts toward long-term health, including:

• Cholesterol management
• Blood pressure control
• Reducing the risk of conditions such as Type 2 diabetes and cardiovascular disease

In some cases, additional medications may be recommended to support these areas.

Monitoring and ongoing care

Perhaps the most important "treatment" for women with PMOS during menopause is regular monitoring. This should include:

• Blood pressure checks
• Lipid panels
• Glucose monitoring
• Cardiovascular risk assessment
• Weight and BMI tracking
• Symptom review

This level of monitoring reflects the complexity of PMOS itself. Because the condition sits at the intersection of gynaecology, endocrinology, and mental health, specialist menopause care is often better placed to provide the continuity and depth of review it requires.

How Voy approaches PMOS during menopause

Voy's menopause care is designed for complexity, and PMOS during menopause is exactly the kind of situation where specialist input makes a real difference.

45-minute consultations with BMS-trained menopause specialists. Voy's menopause specialists are BMS-trained and experienced in exactly this kind of complexity. Consultations are 45 minutes, which means there's real time to go through your full history, understand how your PMOS has presented over the years, discuss what's changed, and build a treatment plan that addresses both conditions, not just the most obvious symptoms.

Comprehensive treatment options. HRT, testosterone therapy, lifestyle support, and ongoing monitoring, all tailored to your individual needs. If you need testosterone replacement alongside HRT, that's something our specialists assess and prescribe. If metformin continuation makes sense, that's part of the conversation. If your main concern is cardiovascular risk, we address it head-on with evidence-based preventive strategies.

Evidence-backed outcomes. 88% of Voy members felt more hormonally balanced at 3 months compared to 62% receiving standard care, 93% reported improvement in quality of life. These aren't vague promises, they're published outcome data presented at The Menopause Society 2025 and forthcoming in Climacteric, a peer-reviewed menopause journal.

You don't need to wait for a clear diagnosis before seeking help. If your symptoms are affecting your life, that's reason enough. And you certainly don't need to suffer in silence while you try to figure out if it's "just stress" or "actually menopause." A specialist can help you untangle that. If your symptoms are affecting your life, that's reason enough to seek support.