PCOS and Your Heart Health: What New Research Shows
Polyendocrine metabolic ovarian syndrome (PMOS), previously known as PCOS, is one of the most common hormonal conditions affecting women, and new research has drawn attention to its possible link with heart health. A large study published in a Lancet journal in July 2026 found that women with the condition developed heart and circulatory disease at around four times the rate of women without it. A figure like that can be frightening on its own, so this article sets out what the researchers measured, what the numbers mean in everyday terms, and what you can reasonably do if you have PMOS.
What is PMOS, and why has the name changed?
PMOS is the new name for the condition long known as polycystic ovary syndrome. A global consensus published in The Lancet in May 2026 agreed with the change, drawing on 56 clinical and patient organisations and surveys of more than 14,000 people. The new term, polyendocrine metabolic ovarian syndrome, reflects that the condition affects hormones and metabolism across the body rather than just the ovaries. Around 10 to 13% of women worldwide are affected, which makes it the most common reproductive endocrine condition. Raised androgen levels and insulin resistance are associated with a higher risk of type 2 diabetes, high blood pressure and other metabolic problems.
What did the new study find?
Women with PMOS were found to have a higher rate of heart and circulatory disease than women without it, and the gap grew over time. Researchers followed 413,450 women with PMOS and compared them with more than two million women who did not have the condition, with an average age of 31. The data came from US health insurance records spanning 2000 to 2022, and anyone with existing heart or artery disease was excluded before the study began. After accounting for weight, smoking, blood pressure, cholesterol and diabetes, the women with PMOS had an adjusted risk around four times higher.
The everyday numbers give a clearer picture than the multiplier alone. Over ten years, about 12 in every 100 women with PMOS developed one of these conditions, compared with about 4 in every 100 women without it. The table below shows how the two groups compared at different points in time.
| Time since study start | Women with PMOS | Women without PMOS |
|---|---|---|
| 1 year | 0.5 in 100 | 0.1 in 100 |
| 3 years | 1.9 in 100 | 0.5 in 100 |
| 5 years | 4.0 in 100 | 1.1 in 100 |
| 10 years | 12.2 in 100 | 4.2 in 100 |
The conditions counted included coronary artery disease, stroke and reduced circulation in the limbs.
Does the increased risk come down to weight?
Not entirely, and this is one of the more useful findings for women to know. Weight, blood pressure, cholesterol and type 2 diabetes together explained only about a third of the link between PMOS and heart disease. The remainder appears connected to PMOS itself, which suggests the condition carries some risk beyond these familiar factors. Separate UK Biobank research has suggested raised risk even in women who are not overweight. The researchers describe this part of their analysis as exploratory, so it needs confirming through further study rather than treating it as settled.
How reliable is this research?
It is a large and carefully adjusted study, though it has important limits worth understanding. The design was observational, which means it can identify a link but cannot prove that PMOS causes heart disease. Earlier evidence has been mixed too, and a review informing international guidelines found no clear association at all. On average, women were followed for under four years, so the ten-year figures rest on a smaller group tracked for longer. The study also used US data, and rates of diabetes, high blood pressure and high cholesterol tend to be lower among women with PMOS studied in England. None of this undoes the findings, though it does mean they are best read as a strong signal to take heart health seriously, rather than a final word.
What can you do if you have PMOS?
The practical step is a conversation about your heart health with a specialist who knows the condition. International guidance already recommends a cardiovascular risk assessment when PMOS is diagnosed, with lifestyle support offered as the first approach. Patient surveys suggest many women were never told about the long-term health side of PMOS, which is part of why awareness features in the researchers’ conclusions. Regular checks of blood pressure, cholesterol and blood sugar are sensible over time, and a specialist can advise on how often these are worth doing. Mr Nicholas Morris can assess your symptoms, arrange appropriate tests and explain your own risk factors in plain terms.
Frequently asked questions
Does PCOS increase the risk of heart disease?
Current research points that way, though the picture is still forming. The 2026 Lancet study found a higher rate of heart and circulatory disease in women with PMOS, while some earlier studies found no clear link. A sensible reading is that the condition is worth taking into account when you think about your long-term heart health.
What is the new name for PCOS?
Polycystic ovary syndrome is now called polyendocrine metabolic ovarian syndrome, or PMOS. A global consensus published in The Lancet in May 2026 agreed the change to better reflect how the condition affects the whole body.
If I have PMOS, will I definitely develop heart problems?
No. Even in the study that found a raised risk, most women did not develop heart or circulatory disease during the follow-up period. A higher risk across a group does not predict what will happen to any one person.
Does keeping a healthy weight remove the risk?
It helps, though it may not remove the risk entirely. Weight and related factors explained only about a third of the link in the study, and separate UK research suggested raised risk in women who are not overweight. Healthy habits remain valuable for many aspects of your health.
Should I have my heart checked if I have PMOS?
It is worth discussing with a specialist. International guidance recommends a cardiovascular risk assessment at diagnosis, and ongoing checks of blood pressure, cholesterol and blood sugar can be arranged as part of your care.
To discuss PMOS and your long-term health, Mr Nicholas Morris offers consultations in person and online, usually available within 24 to 48 hours. Call 020 8371 1510 or email secretary@rapidaccessgynaecology.co.uk to book.