After 14 years of global campaigning, polycystic ovary syndrome (PCOS) has been renamed. Here’s what every woman needs to know about the change, and why it matters for your health.
If you’ve been diagnosed with PCOS or you’re searching for answers about irregular periods, weight gain, unwanted hair growth, or difficulty getting pregnant, there’s an important change you need to know about.
Polycystic ovary syndrome (PCOS) has been officially renamed to Polyendocrine Metabolic Ovarian Syndrome (PMOS). The change follows a 14-year global effort involving academics, clinicians, and patient organisations, and was published in The Lancet in May 2026.
Why Has PCOS Been Renamed?
The old name, “polycystic ovary syndrome,” was misleading for several reasons:
- “Polycystic” suggests the presence of ovarian cysts, but many women with the condition do not have cysts at all
- The name over-focused on the ovaries, ignoring the fact that this is a whole-body hormonal and metabolic condition
- It led to misunderstandings, missed diagnoses, and fragmented care with too much focus on fertility and not enough on long-term health risks
The new name, Polyendocrine Metabolic Ovarian Syndrome (PMOS), better reflects what the condition actually is: a complex hormonal and metabolic disorder that affects weight, metabolism, mental health, skin, and reproductive health. The change is intended to redirect attention toward how multiple body systems interact to shape a woman’s long-term health, rather than framing the condition as a purely ovarian issue.
What Is PMOS? A Simple Explanation
PMOS (formerly PCOS) is a long-term hormonal condition that affects an estimated one in eight women worldwide – more than 170 million people.
It is characterised by hormonal fluctuations that can cause:
Areas Affected
| Area Affected | What You Might Experience |
| Menstrual cycle | Irregular periods, missed periods, or no periods at all |
| Fertility | Difficulty getting pregnant due to irregular or absent ovulation |
| Hormones | Higher-than-normal levels of male hormones (androgens) |
| Skin and hair | Excess facial or body hair, acne, oily skin, or female-pattern hair loss |
| Weight and metabolism | Weight gain, difficulty losing weight, and insulin resistance |
| Mental health | Increased risk of anxiety, depression, and low mood |
What Does This Mean for Your Diagnosis and Care?
Here’s the good news: your diagnosis and treatment remain valid. The name change does not mean you have a new condition – it means the medical community now has a more accurate name for the condition you already have.
However, the change is designed to improve care in several ways:
Better Recognition and Faster Diagnosis
The old name often led to delays in diagnosis because doctors and patients focused too narrowly on the ovaries. The new name highlights the broader health implications, which should help women get diagnosed sooner.
More Holistic Care
PMOS is now recognised as a lifelong health issue, not just a fertility problem. This means your healthcare team should consider all aspects of your health, including metabolic and weight-related factors, mental health, and cardiovascular risks, and not just your reproductive health.
Reduced Stigma
The old name could feel stigmatising or confusing. The new name is designed to be clearer and less misleading.
Updated Guidelines
A new international guideline on PMOS is expected to be published in December 2026, with a three-year global transition period for full implementation.
What This Means for You – Practical Steps
If You Already Have a PCOS/PMOS Diagnosis
- Your care doesn’t change overnight, but over time you should notice a greater focus on whole-body health
- Ask your clinician about metabolic checks (blood sugar, cholesterol, blood pressure), mental health screening, and individualised reproductive care
- Both terms will coexist for a while, and many women will still recognise and use “PCOS” – PMOS does not erase that history
If You’re Concerned About Symptoms
If you’re experiencing any of the following, speak to your gynaecologist:
- Irregular or missed periods
- Difficulty getting pregnant
- Excess facial or body hair
- Persistent acne or oily skin
- Unexplained weight gain or difficulty losing weight
- Fatigue, low mood, or anxiety
Common Questions Women Are Asking
“Do I Have Cysts if I Have PMOS?”
Not necessarily. Many women with PMOS do not have ovarian cysts. The name change reflects this, and the condition is about hormonal and metabolic changes, not cysts.
“Will My Treatment Change?”
Your current treatments remain valid. Treatment options may include lifestyle changes, hormonal contraception, medications to manage insulin resistance (like metformin), and fertility treatments if needed.
“Does PMOS Affect My Risk of Other Conditions?”
Yes. Women with PMOS have an increased risk of several other health conditions.
Increased Health Risks Linked to PMOS
- Type 2 diabetes
- High blood pressure and heart disease
- Gestational diabetes during pregnancy
- Mental health conditions like anxiety and depression
Why Whole-Body Care Matters
This is exactly why the name change is so important – it highlights that PMOS is a whole-body condition that needs whole-body care, rather than management confined to a single specialty.
What Whole-Body Care Looks Like in Practice
In practice, this might mean your gynaecologist working alongside a dietitian, endocrinologist, or mental health professional, so that your metabolic, cardiovascular, and emotional health are monitored alongside your reproductive care.
What Experts Are Saying
The Endocrine Society: “The condition affects roughly one in eight women worldwide.”
The British Society of Lifestyle Medicine: “PMOS is one of the most common conditions affecting around 10% of reproductive-aged women.”
The Bottom Line
The shift from PCOS to PMOS is more than just a name change. It represents a fundamental shift in how this condition is understood – from a narrow focus on the ovaries to a full picture of hormonal, metabolic, and mental health.
For the one in eight women living with this condition worldwide, this change offers hope for:
- Faster diagnosis
- More comprehensive care
- Less stigma
- Better long-term health outcomes
If you have PCOS or are concerned about symptoms like irregular periods, weight changes, or excess hair growth, speak to us for a consultation and full panel tests for your metabolic and hormonal function.
About the Author – Mr Javaid Muglu, Consultant Gynaecologist
eGynaecologist