A Landmark Change: Why PCOS Was Renamed PMOS

On 12 May 2026, The Lancet published the results of the largest medical-condition renaming initiative in history. Led by Professor Helena Teede of Monash University's Monash Centre for Health Research and Implementation, alongside Professor Terhi Piltonen of Oulu University and more than 56 patient and professional organisations — including the Endocrine Society and the International Androgen Excess and PCOS Society — the process formally retired the name "Polycystic Ovary Syndrome" in favour of Polyendocrine Metabolic Ovarian Syndrome (PMOS).

The reasoning was straightforward once stated plainly: researchers involved in the consensus process found there is no actual increase in abnormal ovarian cysts in people with this condition. The old name had, for decades, pointed patients and even some clinicians toward focusing on the ovaries and "cysts," when the condition's real footprint is far broader — involving insulin regulation, androgen (male hormone) levels, metabolism, skin, mental health, and long-term cardiovascular risk.

"For too long, the name reduced a complex, long-term hormonal or endocrine disorder to a misunderstanding about 'cysts' and a focus on ovaries," said Professor Teede in the Endocrine Society's official announcement. "It was heart-breaking to see the delayed diagnosis, limited awareness and inadequate care afforded to those affected by this neglected condition."

The renaming process itself was unusually rigorous: more than 22,000 survey responses from patients and health professionals across multiple world regions, extensive international workshops, and careful attention to cultural and linguistic appropriateness so the new name would not increase stigma in any region or community. A three-year global transition period is now underway, supported by an international awareness campaign, with full implementation expected in the 2028 update to the International PCOS/PMOS Guideline.

A note on terminology: Because the name change is very recent and the transition period runs through 2028, this article uses "PCOS/PMOS" throughout to reflect both the historical and current terminology, since most existing research, diagnostic tools and patient materials still refer to "PCOS." This is purely a naming update — the underlying condition, diagnostic criteria and evidence-based management approaches, including yoga, remain unchanged.

PCOD, PCOS, PMOS — Are They the Same Thing?

For Indian readers in particular, this question causes genuine confusion, so it is worth addressing directly. PCOD (Polycystic Ovarian Disease) is a term used widely in India, often informally, and is sometimes used to describe a comparatively milder presentation — ovaries producing a higher number of immature or partially mature eggs, frequently manageable through diet, weight management, and lifestyle change alone.

PCOS/PMOS, by contrast, is the internationally standardised clinical diagnosis. It is typically defined using the Rotterdam criteria, which require at least two of the following three features: irregular or absent ovulation, clinical or biochemical signs of elevated androgens (such as excess facial or body hair, acne, or elevated blood testosterone), and polycystic-appearing ovaries on ultrasound. PCOS/PMOS is associated with a wider and more serious range of metabolic features, particularly insulin resistance, and carries higher long-term risk for type 2 diabetes, cardiovascular disease, and fertility challenges.

In everyday conversation, including among many doctors in India, "PCOD" and "PCOS" are frequently used interchangeably, and this is not necessarily incorrect — it largely reflects regional terminology rather than two genuinely distinct diagnoses. What matters clinically is the severity and pattern of symptoms in each individual, which is why proper evaluation by a gynaecologist or endocrinologist remains essential regardless of which term is used.

How Common Is It? The Scale of the Problem in India

PCOS/PMOS is one of the most common endocrine conditions affecting women of reproductive age anywhere in the world — and India's numbers are among the higher end of global estimates.

170M+
Women affected worldwide, roughly 1 in 8, per the 2026 global renaming consensus
19.6%
National Indian prevalence using Rotterdam criteria, in a study of 9,824 women aged 18–40
17.4%
Prevalence among college-going women in a 2025 Delhi NCR study, nearly a third newly diagnosed
43.2%
Proportion of Indian women with PCOS/PMOS who also have obesity, in a national comorbidity analysis

The same Indian comorbidity data shows how far beyond the ovaries this condition reaches: among women diagnosed with PCOS/PMOS, an estimated 91.9% have dyslipidemia (abnormal cholesterol/lipid levels), 32.9% have non-alcoholic fatty liver disease, 24.9% meet criteria for metabolic syndrome, and smaller but significant proportions already show diabetes (3.4%) or hypertension (8.3%) — often at a young age. Prevalence also varies sharply by region and diagnostic criteria used, with India's National Institutes of Health-based estimates around 7.2% and Rotterdam-based estimates closer to 19.6%, and studies noting higher rates in urban North and Central India than in rural or Northeastern regions.

What's Actually Happening in the Body

PCOS/PMOS is now understood as fundamentally a condition of the hypothalamic-pituitary-ovarian (HPO) axis — the communication loop between the brain and the ovaries — combined with disrupted insulin signalling. In most affected women, cells become less responsive to insulin (insulin resistance), so the body compensates by producing more of it. Excess insulin, in turn, stimulates the ovaries to produce more androgens (male hormones such as testosterone), which disrupts the normal maturation and release of eggs, leading to irregular cycles and, over time, the follicle pattern historically described as "polycystic."

Alongside this, women with PCOS/PMOS commonly show an altered LH:FSH ratio (luteinising hormone relative to follicle-stimulating hormone), elevated anti-Müllerian hormone (AMH), and low-grade chronic inflammation — all of which reinforce the same cycle of hormonal imbalance, weight gain, and metabolic strain. This is precisely why the new name emphasises "polyendocrine" and "metabolic": the condition genuinely is a whole-system hormonal disorder, not a localised ovarian one, which is also why lifestyle interventions that influence insulin sensitivity and stress hormones — including yoga — have a plausible, and increasingly well-documented, physiological mechanism for helping.

What the Research Says About Yoga for PCOS/PMOS

Yoga is one of the more extensively studied complementary approaches to PCOS/PMOS management, with multiple randomised controlled trials and several systematic reviews now available.

-0.73
Standardized mean difference in HOMA-IR (insulin resistance) improvement with yoga — the strongest of six exercise types compared in a 2025 network meta-analysis
12 wks
Duration of the landmark adolescent RCT showing yoga significantly outperformed conventional exercise on hormone markers
9 RCTs
Randomised controlled trials included in a 2026 systematic review of yoga as a complementary PCOS/PMOS intervention
P<0.001
Statistical significance of testosterone, LH, FSH and prolactin improvement after a 12-week yoga programme in one clinical study

Insulin Resistance and Metabolic Markers

Because insulin resistance sits at the centre of PCOS/PMOS for most affected women, it is one of the most clinically important markers to influence. A 2025 network meta-analysis comparing yoga against five other exercise modalities for insulin resistance in women with PCOS found yoga produced the largest improvement in HOMA-IR (a standard clinical measure of insulin resistance) of all approaches studied, with a standardised mean difference of -0.73 — a notably strong effect size in exercise-intervention research. A separate randomised controlled trial specifically examining oxidative stress and mitochondrial dysfunction in PCOS found yoga produced measurable improvement in these underlying cellular stress markers as well.

Hormonal Balance: LH, FSH, Testosterone and AMH

The most frequently cited trial in this field is a randomised controlled study of 90 adolescent girls with PCOS from Andhra Pradesh, India, who were assigned to either a structured holistic yoga programme or a matched conventional physical-exercise programme, one hour daily for 12 weeks. The yoga group showed significantly greater improvement than the exercise group across nearly every hormonal marker measured: anti-Müllerian hormone (AMH), luteinising hormone (LH), and testosterone all decreased significantly more with yoga, the modified Ferriman-Gallwey hirsutism score improved more, and menstrual frequency improved more — with no significant difference in body weight change between the two groups, suggesting the hormonal benefit was not simply a byproduct of weight loss.

A separate 12-week yoga intervention study similarly found statistically significant improvements (p<0.001) in serum testosterone, prolactin, LH, and FSH, while other published trials have found significant reductions in the LH:FSH ratio and AMH specifically. Together, these findings point to yoga directly influencing the hypothalamic-pituitary-ovarian axis, not merely producing generic fitness benefits.

Menstrual Regularity

A systematic review and meta-analysis of yoga therapy for PCOS/PMOS found that yoga significantly decreased menstrual irregularity and clinical signs of excess androgen (hyperandrogenism) across the pooled studies reviewed. This mirrors the adolescent RCT findings above, where improved menstrual frequency was one of the most consistent outcomes of the 12-week yoga programme.

Mental Health and Quality of Life

PCOS/PMOS carries a well-documented mental health burden — elevated rates of anxiety, depression, and body-image concerns are consistently reported in affected women, and are now recognised as part of the condition's clinical picture rather than a separate issue. A 2026 systematic review of nine randomised controlled trials found yoga interventions produced significantly decreased depression, stress, anxiety, and body-image concerns, and improved overall quality of life, including nutrition self-efficacy and physical-activity self-efficacy. A related trial focused specifically on adolescent girls with PCOS found a structured yoga programme significantly reduced anxiety symptoms compared with conventional exercise.

How Soon Can You See Results? A Realistic Timeline

1
Weeks 1–4: Stress and mood shift first
Reduced perceived stress, calmer mood, and better sleep are typically the earliest noticeable changes, consistent with yoga's well-documented effect on cortisol and the nervous system. These early shifts also matter clinically, since chronic stress can worsen insulin resistance and hormonal imbalance in PCOS/PMOS.
2
Weeks 4–8: Early metabolic and cycle signals
Some women begin noticing early signs of change in this window — slightly more predictable cycles, easier energy levels through the day. Lab-measurable insulin sensitivity changes are typically still building at this stage rather than fully established.
3
Week 12: The point most clinical trials measured significant change
This is the timeframe used in the landmark adolescent RCT and most other yoga-for-PCOS/PMOS trials, and it is where statistically significant reductions in testosterone, LH, AMH, and improvements in menstrual frequency and hirsutism scores were documented.
4
Months 4–6 and beyond: Sustained, compounding benefit
Because PCOS/PMOS is a chronic hormonal condition, the research consistently points to continued, not one-time, practice as the way to sustain hormonal and metabolic gains. Longer-term practice also tends to support more durable weight and metabolic health improvements, which further reinforce hormonal balance.

Yoga Practices That Specifically Help

The practices below are drawn from the structured programmes used in the clinical trials referenced above, which typically combined postures, breathing practices and relaxation rather than any single technique in isolation.

Postures for Pelvic Circulation and Metabolic Health

Seated hip-opening postures such as Baddha Konasana (Butterfly Pose) and Supta Baddha Konasana (Reclined Butterfly Pose) are staples of nearly every published PCOS/PMOS yoga protocol, believed to support pelvic blood flow. Gentle backbends such as Bhujangasana (Cobra Pose) and Ustrasana (Camel Pose) are commonly included for their effect on the abdominal and endocrine region, while Malasana (Garland Pose) and a moderated Surya Namaskar (Sun Salutation) sequence are frequently used for their broader metabolic and insulin-sensitivity benefits.

Pranayama for Stress and Hormonal Regulation

Slow, calming breathwork such as Nadi Shodhana (Alternate Nostril Breathing) and Bhramari Pranayama (Humming Bee Breath) are commonly used to lower sympathetic nervous system activity, given the well-established link between chronic stress, elevated cortisol, and worsened insulin resistance in PCOS/PMOS. More energising practices like Kapalabhati are sometimes included for their metabolic-stimulation effect, but should be learned under supervision and are generally avoided during menstruation, pregnancy, or in the presence of certain health conditions.

Relaxation and the Stress-Hormone Link

Because cortisol elevation is closely tied to worsened androgen and insulin profiles, a closing relaxation practice such as Yoga Nidra or a brief guided Shavasana is a consistent feature of clinical PCOS/PMOS yoga protocols, not an optional add-on. Our pranayama classes provide structured, supervised instruction in these breathing techniques.

Common Myths About PCOD, PCOS and PMOS

Myth
PCOD is a harmless, minor condition, while PCOS is the "real" disease.
Reality
PCOD and PCOS/PMOS are largely regional terms for the same underlying spectrum of hormonal imbalance, not two separate diagnoses of differing severity. Severity varies between individuals, not between the terms themselves, and any persistent irregular cycles, excess hair growth, acne or weight change deserve proper medical evaluation regardless of which term is used.
Myth
Renaming PCOS to PMOS is just cosmetic and doesn't change anything meaningful.
Reality
According to the clinicians who led the 14-year global consensus process, the old name actively contributed to delayed diagnosis and inadequate care by pointing attention toward ovarian cysts rather than the condition's true metabolic and endocrine scope. The new name is intended to prompt earlier, more comprehensive evaluation — including of metabolic risk factors many patients were never screened for.
Myth
Yoga can cure PCOS/PMOS.
Reality
No current intervention, including yoga, cures PCOS/PMOS. What clinical trials demonstrate is meaningful improvement in insulin resistance, hormone levels, menstrual regularity, and mental health — making yoga a well-evidenced management tool, typically used alongside medical care, not a replacement for it.
Myth
Only overweight women get PCOS/PMOS.
Reality
While obesity is a common feature (43.2% in one Indian cohort) and can worsen insulin resistance, a substantial proportion of women with PCOS/PMOS have a normal body weight. Lean PCOS/PMOS is a recognised presentation and can be harder to diagnose precisely because it doesn't fit the common stereotype.
Myth
PCOS/PMOS only matters if you are trying to conceive.
Reality
Fertility is one dimension of the condition, but the metabolic risks are significant at any life stage: Indian data shows high rates of dyslipidemia, fatty liver disease, and metabolic syndrome among affected women, many of them young. This is precisely why the new name foregrounds "metabolic" rather than only reproductive terminology.

A Practical Starter Routine

Drawing on the structure used in the clinical trials referenced throughout this article, a realistic starting practice looks like this:

  • Warm-up and Surya Namaskar — 5–8 rounds, moderated pace
  • Hip-opening and pelvic-circulation postures (Baddha Konasana, Malasana) — 5–7 minutes
  • Gentle backbends (Bhujangasana, Ustrasana) — 5 minutes
  • Pranayama (Nadi Shodhana, Bhramari) — 8–10 minutes
  • Closing relaxation (Yoga Nidra or Shavasana) — 10 minutes

Most of the clinical evidence above used daily or near-daily practice sustained over a full 12 weeks before drawing conclusions, which is a useful benchmark for what a genuine trial of yoga for PCOS/PMOS looks like. Our yoga therapy programme can build a routine tailored to your specific symptoms, cycle pattern, and any existing diagnosis, ideally in coordination with your gynaecologist or endocrinologist.

Frequently Asked Questions

Is PMOS a completely new condition, or is it the same as PCOS?
It is the same underlying condition with a new, more accurate name. Following a 14-year global consensus process published in The Lancet in May 2026, Polycystic Ovary Syndrome (PCOS) was formally renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS). Nothing about the biology changed — what changed is that the name now reflects the condition's true hormonal and metabolic scope, rather than focusing narrowly on ovarian cysts, which research shows are not actually increased in this condition.
What is the difference between PCOD and PCOS/PMOS?
PCOD (Polycystic Ovarian Disease) is a term used mainly in India and is often used informally, sometimes to describe a milder presentation managed largely through lifestyle change. PCOS/PMOS is the internationally recognised clinical diagnosis, defined by standardised criteria (commonly the Rotterdam criteria) and associated with a wider range of metabolic and endocrine features, including insulin resistance. In everyday conversation the terms are frequently used interchangeably, but PCOS/PMOS is the medically precise term used in research and international guidelines.
Can yoga cure PCOS/PMOS?
No. There is currently no cure for PCOS/PMOS. What clinical research shows is that regular yoga practice can meaningfully improve several of the condition's measurable features — including insulin resistance, elevated androgen levels, LH/FSH imbalance, menstrual irregularity, and psychological symptoms such as anxiety and low quality of life. Yoga is best understood as an evidence-supported management tool, typically used alongside medical care, not a replacement for diagnosis or treatment.
How soon can yoga improve PCOS/PMOS symptoms?
Most of the clinical trials that found significant hormonal change — reduced testosterone, LH, and AMH, along with improved menstrual frequency — used 12-week (three-month) daily or near-daily yoga programmes. Some psychological benefits, such as reduced stress and improved mood, are often reported earlier, within the first few weeks. Meaningful, lab-confirmed hormonal change generally requires the full 12-week period or longer, and benefits are best sustained with continued practice.
Is yoga more effective than other forms of exercise for PCOS/PMOS?
A 2025 network meta-analysis comparing six exercise modalities for insulin resistance in PCOS found yoga had the strongest effect on HOMA-IR (a standard insulin resistance marker) of all modalities studied. However, findings vary across studies, and the ideal approach depends on individual health status, fitness level and preference. Yoga's added benefit is that it also directly targets the stress and anxiety commonly experienced with PCOS/PMOS, which many other exercise forms do not address as directly.
Is it safe to practise yoga, including inversions and core-intensive poses, if I have PCOS/PMOS?
Most gentle to moderate yoga practices are safe for people with PCOS/PMOS, and this is exactly the population studied in the clinical trials referenced in this article. However, certain practices such as strong abdominal compression or inversions may need modification during menstruation or in specific circumstances such as pregnancy or existing pelvic conditions. It is best to practise under a qualified instructor who can tailor postures to your individual health profile.
Why does the PCOS/PMOS name change matter if the treatment doesn't change?
According to the clinicians who led the renaming process, the old name contributed to delayed diagnosis, fragmented care and stigma, because it implied the condition was primarily about ovarian cysts, when in fact ovarian cysts are not actually increased in the condition. The new name is intended to help patients and doctors recognise the full hormonal and metabolic picture earlier, which can lead to more timely, comprehensive care — even though the underlying condition and its management, including lifestyle approaches like yoga, remain the same.

Conclusion: A New Name, and a Growing Evidence Base

The renaming of PCOS to PMOS is, at its core, an acknowledgement of something clinicians and researchers have understood for years but patients were rarely told plainly: this is a whole-body hormonal and metabolic condition, not a narrow gynaecological one. Whether you know it as PCOD, PCOS, or its new name PMOS, the underlying biology — insulin resistance, elevated androgens, HPO-axis disruption — is what actually needs addressing, and it is exactly what the clinical research on yoga has been measuring for over a decade.

The evidence is not preliminary or anecdotal. Randomised controlled trials, including a well-powered adolescent study from India, have found that a structured 12-week yoga programme can outperform conventional exercise on hormone markers as specific as testosterone, LH, and AMH, while a 2025 network meta-analysis found yoga's effect on insulin resistance was the strongest among six exercise types compared. Combined with yoga's well-documented benefit for the anxiety and quality-of-life impact of PCOS/PMOS, it represents one of the more evidence-supported lifestyle tools available — not as a replacement for medical care, but as a genuinely effective companion to it.

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References

The following sources informed this article. We cite them for transparency and to support further reading. We do not reproduce their findings beyond what is described above.

Teede HJ, Piltonen T, Morman R, et al. Polyendocrine metabolic ovarian syndrome, the new name for polycystic ovary syndrome: a multistep global consensus process. The Lancet. 2026. [PubMed PMID: 42119588]
Endocrine Society. Polyendocrine Metabolic Ovarian Syndrome: New name to improve diagnosis and care of condition affecting 170 million women worldwide. Press release, 12 May 2026.
Nidhi R, Padmalatha V, Nagarathna R, Amritanshu R. Effects of a holistic yoga program on endocrine parameters in adolescents with polycystic ovarian syndrome: a randomized controlled trial. Journal of Alternative and Complementary Medicine. 2013;19(2):153–160. [PubMed PMID: 22808940]
Nidhi R, et al. Effect of holistic yoga program on anxiety symptoms in adolescent girls with polycystic ovarian syndrome: a randomized control trial. International Journal of Yoga. 2012. [PMC PMID: PMC3410189]
Effect of Yoga Therapy on Health Outcomes in Women With Polycystic Ovary Syndrome: A Systematic Review and Meta-Analysis. 2023. [PubMed PMID: 36636398]
The Effects of Different Exercises on Insulin Resistance and Testosterone Changes in Women with Polycystic Ovarian Syndrome: A Network Meta-Analysis Study. 2025. [PMC PMID: PMC12427719]
Yoga as a Complementary Intervention for Polycystic Ovary Syndrome (PMOS) Management: A Systematic Review. Frontiers in Reproductive Health. 2026.
Unveiling Therapeutic Potential of Yoga Mitigating Oxidative Stress and Mitochondrial Dysfunction in PCOS: A Randomized Controlled Trial. [PMC PMID: PMC12068466]
Effects of yoga interventions on Anti-Müllerian hormone, androgen levels, and metabolic parameters in women with polycystic ovary syndrome: a systematic review. BMC Complementary Medicine and Therapies. 2026. [PMC PMID: PMC13067475]
Impact of Yoga therapy on hormonal imbalance in women with Polycystic Ovarian Disease. International Journal of Ayurvedic Medicine.
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