PCOS Has Officially Been Renamed to PMOS
Polycystic Ovary Syndrome (PCOS) has been officially renamed to Polyendocrine Metabolic Ovarian Syndrome (PMOS). The change was announced on May 12, 2026, following a landmark global consensus study published in The Lancet. The renaming reflects more than a decade of research and input from over 22,000 patients and healthcare professionals across six continents, alongside participation from more than 50 medical and patient organizations worldwide.
PMOS is the same condition as PCOS. The symptoms, diagnostic criteria, and treatment approaches have not changed. What has changed is the name, and with it, a long-overdue recognition of what this condition actually involves.
What Does PMOS Stand For?
PMOS stands for Polyendocrine Metabolic Ovarian Syndrome. Each word in the new name was chosen to more accurately describe the condition:
Polyendocrine refers to the involvement of multiple hormone systems in the body. The condition affects far more than the ovaries alone. It involves insulin signaling, androgen production, thyroid function, cortisol regulation, and the hormones that govern hunger, mood, and energy.
Metabolic acknowledges the central role that metabolism plays in the condition. Insulin resistance, blood sugar dysregulation, weight management challenges, and long-term cardiometabolic risk are core features, not secondary side effects.
Ovarian maintains the important role the ovaries play in the condition. Irregular ovulation and reproductive challenges remain a significant part of the experience for many women.
Syndrome continues to reflect that this is a collection of related symptoms that vary from person to person. No two women experience it the same way.
Why Was PCOS Renamed?
The original name, Polycystic Ovary Syndrome, was coined in 1935. For decades, medical professionals and patients alike recognized that the name was misleading.
The word "polycystic" implied that ovarian cysts were the central feature of the condition. In reality, many women with the condition never develop ovarian cysts. The cysts that do appear are actually small, undeveloped follicles, not true cysts.
More importantly, the old name suggested this was primarily an ovarian or gynecological problem. Research has consistently shown that the condition is a complex, multisystem disorder involving the endocrine system, metabolism, mental health, cardiovascular health, skin, and hair.
According to the researchers behind the Lancet study, the old name contributed to delayed diagnoses, fragmented care, and a failure to address the full range of health risks. Up to 70 percent of women with the condition remain undiagnosed, according to the World Health Organization.
The new name was developed to address these issues directly. It places hormonal complexity and metabolic health at the forefront, while maintaining the connection to ovarian function.
What Is the Difference Between PCOS and PMOS?
There is no clinical difference between PCOS and PMOS. They refer to the same condition. The diagnostic criteria remain the same, and existing diagnoses are unchanged.
The difference is in how the condition is described and understood. The old name focused narrowly on the ovaries. The new name acknowledges that the condition involves multiple hormonal systems and has significant metabolic implications that extend well beyond reproductive health.
For women who have been living with this condition, the distinction matters. Many have experienced symptoms like fatigue, weight gain, brain fog, anxiety, hair thinning, and skin changes that seemed unrelated to their diagnosis. The new name validates that these experiences are part of the same condition, not separate issues to manage on their own.
PMOS Symptoms
The symptoms of PMOS are the same as those previously associated with PCOS. They can vary significantly from person to person, but commonly include:
Hormonal and reproductive symptoms such as irregular periods, missed periods, difficulty conceiving, and changes in ovulation patterns.
Metabolic symptoms such as insulin resistance, difficulty managing weight, increased cravings (especially for carbohydrates), post-meal energy crashes, and elevated blood sugar levels.
Skin and hair symptoms such as adult acne, excess facial or body hair growth, thinning hair on the scalp, and changes in skin texture or tone.
Mood and mental health symptoms such as anxiety, depression, mood swings, difficulty concentrating, and fatigue that does not improve with rest.
Long-term health risks including increased risk of type 2 diabetes, cardiovascular disease, endometrial concerns, sleep apnea, and fatty liver.
Not every woman with PMOS will experience all of these symptoms. Some may have only a few mild indicators, while others may navigate several at once. If you are unsure whether your symptoms may be connected, taking a symptoms quiz can be a helpful starting point for a conversation with your healthcare provider.
What Does the PMOS Rename Mean for Your Diagnosis?
If you have already been diagnosed with PCOS, your diagnosis still stands. You do not need to be re-evaluated or re-diagnosed. The condition itself has not changed, only the name used to describe it.
Your healthcare provider may continue to use the term PCOS during the transition period, and that is perfectly normal. Medical guidelines, insurance codes, and clinical education materials will be updated over the coming months and years to reflect the new terminology.
What the rename does change is the conversation. Providers, researchers, and patients now have a name that more accurately reflects the full scope of the condition. This is expected to lead to earlier diagnoses, more comprehensive treatment plans, and greater recognition of the metabolic and cardiovascular risks involved.
How Ovii Was Built for This Understanding
When Dr. Thais Aliabadi created Ovii, she built it on a belief that has guided her career across more than two decades of clinical practice: this condition is about so much more than the ovaries.
Dr. Aliabadi has treated thousands of women navigating the hormonal and metabolic challenges of what was previously called PCOS. She saw the same patterns repeatedly. Women struggling with energy, cravings, weight, mood, skin, hair, and cycle irregularity. Women who had been told their labs looked fine. Women who knew something was off but could not get a clear answer.
Ovii was formulated to address the full picture. Our blend of myo-inositol and D-chiro-inositol in the clinically studied 40:1 ratio, combined with patented Reducose and 14 additional science-backed ingredients, was designed to support the interconnected hormonal and metabolic pathways that affect how you feel every day.
The PMOS rename validates the approach Ovii has taken from the beginning: start with metabolism and work outward, supporting your hormones, your energy, your cycles, and your overall wellbeing across every stage.
What Happens Next with the PCOS to PMOS Transition
The transition from PCOS to PMOS will happen gradually. The Lancet study includes recommendations for updates to clinical guidelines, medical education, and international disease classification systems. These changes will be implemented over the months and years ahead.
During this time, you will likely see both terms used interchangeably. Healthcare providers, health content publishers, and patient communities will adopt the new name at different speeds. Both PCOS and PMOS refer to the same condition, and searching for either term should lead you to accurate information.
At Ovii, we will be updating our website, educational content, and communications to reflect the new PMOS terminology. We will use "PMOS (formerly PCOS)" throughout our materials during the transition to ensure you can always find what you are looking for, regardless of which term you search.
What You Can Do Right Now
If you have been diagnosed with PCOS (now PMOS), talk to your healthcare provider about whether the broader understanding of the condition might inform any updates to your care plan. The metabolic and cardiovascular dimensions of PMOS deserve attention alongside the reproductive aspects.
If you have been experiencing symptoms like irregular periods, unexplained weight changes, persistent fatigue, skin or hair changes, or mood shifts and have not been evaluated, consider bringing it up with your doctor. The PMOS rename is a reminder that these symptoms can be connected, and they deserve to be taken seriously.
You can also take the Ovii Symptoms Quiz as a starting point. It is not a diagnosis, but it can help you identify whether your symptoms may be consistent with PMOS and prepare you for a more productive conversation with your healthcare provider.
