One of the world’s most misunderstood women’s health conditions has just been renamed

Millions of women around the world live with a condition that affects periods, fertility, weight, hormones and long term health risks, yet many still do not know they have it. Now, after years of criticism from doctors and patients, polycystic ovary syndrome, better known as PCOS, is officially being renamed in an attempt to fix what experts say has been decades of confusion surrounding the condition.

Researchers behind the change believe the old name focused far too much on ovarian cysts and failed to reflect the reality of what many women actually experience. The new name, polyendocrine metabolic ovarian syndrome, or PMOS, is designed to highlight that the condition goes far beyond the ovaries and can affect the entire body.

The change was published in The Lancet after an international collaboration involving doctors, researchers and patient organisations. Specialists hope the new terminology will help more women get diagnosed earlier and encourage healthcare systems to take the condition more seriously.

According to the World Health Organization, between 10 and 13 per cent of women of reproductive age are affected globally. Yet experts believe most cases still go undiagnosed.

Why doctors say the old name created years of misunderstanding

For many women, the problem started with the name itself. The phrase ‘polycystic ovary syndrome’ led countless patients to believe the condition was only linked to cysts on the ovaries. Some women were even told they could not possibly have PCOS because scans did not show cysts. But specialists say that has never been the full picture.

Many women diagnosed with the condition do not actually have ovarian cysts at all. Others struggle with symptoms that have nothing to do with cysts in the first place.

Doctors say the syndrome can affect hormones, metabolism, mental health, fertility and cardiovascular health. Symptoms often include irregular periods, acne, excessive hair growth, thinning hair, weight gain, insulin resistance and difficulty becoming pregnant.

Some women also experience anxiety, depression and body image struggles linked to the hormonal changes caused by the condition.

Professor Helena Teede, an endocrinologist at Monash University in Australia who helped lead the renaming process, said she has spent years correcting misunderstandings caused by the original name. Researchers involved in the project argued that focusing only on ovaries allowed wider health risks to be overlooked for too long.

That concern became even bigger once scientists discovered strong links between the condition and metabolic problems such as insulin resistance and type 2 diabetes.

The condition affects far more than fertility

For years, PCOS was mainly treated as a reproductive disorder because many women first seek help after struggling with irregular periods or fertility problems. But researchers say the condition is far more complex than that.

Scientists discovered decades ago that many women with the syndrome also develop insulin resistance, meaning the body struggles to process insulin properly. Over time, that can increase the risk of diabetes and other metabolic conditions.

Doctors now increasingly describe the syndrome as a long term hormonal and metabolic disorder rather than simply a fertility issue.

There is also growing awareness of how deeply it can affect everyday life.

Some women struggle for years with unexplained symptoms before finally receiving a diagnosis. Others are repeatedly referred between specialists without anyone looking at the wider picture.

A dermatologist may focus on acne. A gynaecologist may focus on irregular cycles. A nutritionist may focus on weight gain. Meanwhile, patients are often left trying to connect the dots themselves.

That fragmented approach is one of the reasons many specialists pushed for a new name.

They hope PMOS will encourage doctors across different medical fields to recognise the condition more quickly and treat it in a more coordinated way. Researchers also believe the updated terminology may help reduce stigma.

Many patients felt the old name sounded misleading or minimised what they were experiencing. Some women said they felt dismissed when symptoms affecting mental health, metabolism or energy levels were treated as unrelated problems.

By changing the name, experts hope the conversation around the condition becomes broader and more accurate.

Why millions of women still remain undiagnosed

Despite affecting millions worldwide, experts believe a large number of women still do not realise they have the condition.

One of the biggest warning signs is irregular menstrual cycles. Doctors say women having fewer than eight periods a year, or menstrual cycles lasting longer than 40 days, should speak to a healthcare professional about possible hormonal issues.

Other symptoms can include facial hair growth, thinning hair on the scalp, persistent acne, unexplained weight gain and difficulty becoming pregnant.

Diagnosis usually involves reviewing symptoms, hormone levels and medical history. Treatment varies depending on symptoms and life stage.

Some women are prescribed hormonal contraceptives to regulate periods and lower androgen levels linked to acne or excessive hair growth. Others may receive medication targeting insulin resistance or metabolic symptoms.

Lifestyle changes are also commonly recommended. Doctors say balanced nutrition, regular exercise and moderate weight loss can improve symptoms for some patients, particularly those linked to insulin resistance.

Fertility treatment may also help women trying to conceive.

Still, many specialists believe the condition has not received enough medical attention compared with other long term health problems affecting similar numbers of people.

Researchers involved in the renaming process hope the new terminology could eventually lead to more funding, better awareness and faster diagnoses.

For many women living with the condition, the change may seem symbolic at first glance. But doctors behind the decision believe words matter, especially when they shape how illnesses are understood, diagnosed and treated.

And after years of confusion surrounding one of the world’s most common hormonal disorders, many experts believe the old name had simply stopped reflecting reality.