What is PCOS?

What is PCOS?

Despite what the name suggests, Polycystic Ovary Syndrome isn’t just about ovaries—or cysts, for that matter. In fact, many people diagnosed with PCOS don’t have any ovarian cysts at all. Confusing? You’re not alone. The name dates back to how the condition was first described, but science has come a long way since then. Today, we understand that PCOS is really a complex hormonal and metabolic condition that affects far more than reproductive health.

At its core, PCOS is about hormonal imbalance. When key hormones like insulin, androgens (like testosterone), and others are out of sync, they can create a domino effect throughout the body. This hormonal miscommunication can lead to irregular periods, acne, weight changes, hair loss or excess hair growth, difficulty with ovulation or fertility—and that’s just the shortlist. But here’s the thing: PCOS doesn’t follow a single pattern. Some women experience textbook symptoms. Others don’t fit the mold at all. That’s part of what makes PCOS so challenging—and why understanding your unique experience matters.

So, how can the PCOS Association help?

We’re here to offer more than definitions. We’re here to offer direction. Whether you’re newly diagnosed, still searching for answers, or years into your journey and feeling stuck, we’re committed to helping you make sense of PCOS—and make progress.

Here’s what you’ll find at PCOSA:

  • Reliable, science-backed information about what PCOS is (and isn’t)

  • 💬 Supportive communities of people who understand exactly what you’re going through

  • 🧬 Resources for navigating fertility, metabolic health, nutrition, and more

  • 🧠 Education for providers who want to better support their PCOS patients

  • 🙋‍♀️ Advocacy to make sure PCOS is recognized, researched, and respected

No fluff. No fad cures. Just real support, grounded in evidence and compassion.

At PCOSA, we believe every person with PCOS deserves to be informed, empowered, and heard. Wherever you are in your journey, we’re honored to walk with you.

pcos

pcos: Latest results from PubMed

Unveiling the Role of Irisin as a Biomarker in Adolescent and Young Adult PCOS: A Metabolic and Hormonal Comparison of Hyperandrogenic and Normoandrogenic Phenotypes

CONCLUSION: HA-PCOS is marked by more severe metabolic disruption. Irisin may serve as a promising early biomarker for this phenotype and help predict long-term complications linked to metabolic disruption in PCOS.

Published on: Mon, 13 Apr 2026 06:00:00 -0400

Authors: Sadaf Majeed, Hira Moin, Sampana Fatima, Fasih Hashmi, Tasneem Akhtar, Riffat Shafi,

Network Pharmacology, Molecular Docking, and Experimental Validation Reveal the Mechanism of Qingfudaotan Formula in PCOS Treatment

CONCLUSION: This study identified targets for QFDT in PCOS treatment, helping elucidate the mechanisms of action of this ingredient and its potential clinical applications.

Published on: Mon, 13 Apr 2026 06:00:00 -0400

Authors: Ruye Wang, Yun Chen, Menglei Zhu, Shengyue Jin, Ying Zhao, Chenyun Miao, Ning Ren, Liuqin Yang, Xiaohong Fang, Qin Zhang,

Variations in ovulation time and menstrual cycle characteristics: analysis of a prospective long-term cohort study

STUDY QUESTION: What are the variations in ovulation time and menstrual cycle characteristics among and within various individuals over the course of 12 menstrual cycles?

Published on: Sun, 12 Apr 2026 06:00:00 -0400

Authors: Maria-Nefeli Malliou-Becher, Pia Maria Herrmann, Alexander Freis, Tanja Freundl-Schütt, Lisa-Maria Wallwiener, Siegfried Baur, Richard J Fehring, Christian Gnoth, Andreas Mallios, Thomas Strowitzki, Petra Frank-Herrmann,

Arcuate nucleus-specific progesterone receptor knockdown in female mice is sufficient to induce PCOS-like hyperactivity in the reproductive axis

Mammalian reproductive function is dependent upon gonadal steroid hormone feedback within the hypothalamic-pituitary-gonadal (HPG) axis. In polycystic ovary syndrome (PCOS), impaired progesterone (P4) negative feedback leads to hyperactive pulsatile secretion of luteinising hormone (LH) and impaired reproductive function. Although the precise upstream neuronal network modulating P4 negative feedback remains undefined, gamma-aminobutyric acid (GABA)ergic neurons in the arcuate nucleus (ARC) have...

Published on: Sun, 12 Apr 2026 06:00:00 -0400

Authors: Kelly A Glendining, Melanie Prescott, Kyoko Potapov, Elodie Kip, Rebecca E Campbell,

Ultrafiltration-MSPE with in-situ quaternary aminooxy oximation for LC-MS/MS quantification of nine serum free androgens

Accurate quantification of circulating androgens, particularly the biologically active free fraction, is analytically challenging due to ultra-low concentrations and extensive protein binding in human serum. Here, we developed and validated an integrated ultrafiltration-LC-MS/MS workflow for simultaneous quantification of nine endogenous serum free androgens. Free fractions were isolated by phosphate-buffered saline dilution followed by temperature-controlled centrifugal ultrafiltration (37 °C)...

Published on: Sun, 12 Apr 2026 06:00:00 -0400

Authors: Xianhua Zhang, Lingling Liu, Huiyu Xu, Xin Xiong, Rongsheng Zhao, Libo Zhao, Rong Li, Li Yang,

Development and validation of an LC-MS/MS assay for serum 5α-androstane-3α, 17β-diol 17-glucuronide with enhanced interference resolution

5α-androstane-3α,17β-diol 17-glucuronide (3α-diol G) is a testosterone metabolite and an important biomarker of hormonal dysregulation, including polycystic ovary syndrome (PCOS) and virilizing syndromes in women such as idiopathic hirsutism. While immunoassay kits are commonly used for its quantification in clinical laboratories, these methods are prone to interference due to the structural similarity among steroidal compounds. In this study, we developed and validated a robust LC-MS/MS method...

Published on: Sun, 12 Apr 2026 06:00:00 -0400

Authors: André Filipe Rodrigues-Oliveira, Andrea Tedesco Faccio, Gustavo Arantes Rosa Maciel, Karina Helena Morais Cardozo, Valdemir Melechco Carvalho,

SESN2 suppresses ferroptosis in polycystic ovary syndrome by maintaining PRDX6 K209 lactylation

Polycystic ovary syndrome (PCOS) is a prevalent and heterogeneous endocrine-metabolic disorder affecting women of reproductive age, characterized by elevated androgen levels, disrupted ovulation, and polycystic ovarian changes. Increasing evidence indicates that oxidative stress and ferroptosis contribute to granulosa cell dysfunction and ovarian impairment in PCOS. In this study, we identified sestrin 2 (SESN2), a stress-inducible metabolic regulator, as a protective factor against ferroptosis...

Published on: Sun, 12 Apr 2026 06:00:00 -0400

Authors: Ying-Ying Li, Ning Xu, Xiao-Yi Gu, Bo Yu, Ying-Yi Luan, Cheng-Hong Yin,

Interconnection between Polycystic Ovary Syndrome, Immune Disorders, and Reproductive Outcomes

ABSTRACT: Polycystic ovary syndrome (PCOS) is a multifactorial disorder traditionally recognized for its endocrine and metabolic disturbances. However, accumulating evidence indicates that chronic low-grade inflammation and immune dysregulation play a central role in its pathophysiology. This narrative review explores the immunological mechanisms underlying PCOS and their repercussions for reproductive outcomes. Women with PCOS exhibit increased circulating levels of inflammatory...

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Thaís Bastos Romero, Daniel de Sousa Sobral, Lara Andryne Alves Aguiar, Helena Aben-Athar Ponte, Ricardo Espíndola Romero Filho, Ana Luiza Rangel Montenegro, Marla Girão Ramos Maia, Thiago Gonçalves Marques, Laís de Oliveira Martins, Marcelo Borges Cavalcante,

The impact of polycystic ovarian syndrome on ocular health

ImportanceOcular manifestations of polycystic ovarian syndrome (PCOS), particularly related to elevated testosterone, are understudied.ObjectiveTo evaluate prevalence and odds of ocular diseases in PCOS patients using large-scale electronic health records (EHRs).DesignCross-sectional study comparing females aged 15-50 with PCOS (n = 494,557) to two controls: total female population (n = 32,162,331) and BMI ≥30 (n = 4,895,226), based on ICD-10 ocular diagnoses. Prevalence odds ratios (PORs) with...

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Ana Lopez, Anna Zhang, David C Kaelber, Katherine E Talcott, Rishi P Singh, Jacqueline Shaia,

Polycystic ovarian syndrome and perinatal outcomes: A population-based pooled cross-sectional study

CONCLUSION: Findings fill a gap in research using recent population-based US representative data to emphasize the importance of early detection and tailored management strategies for women with PCOS to mitigate the risks of pregnancy complications and support the need for targeted interventions to improve maternal and neonatal outcomes.

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Raegan A Holek, Chelsea Rossow, Sarah Nechuta,

Metabolic profiling of a polycystic ovary syndrome-like organoid model reveals the critical role of glutamine in local endometrial dysregulation related to implantation failure

Polycystic ovary syndrome (PCOS) is a prevalent endocrine disorder characterized by reproductive and metabolic disturbances, which causes a chronic lack of ovulation that leads to increased incidence of atypical endometrial hyperplasia and carcinogenesis. Increasing evidence indicates that metabolic changes may play a crucial role in PCOS pathogenesis; however, the metabolic profile of fluid in PCOS-related endometrium has not yet been characterized. In this study, we successfully constructed...

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Haoxuan Yang, Jing Zhang, Su Long, Yuhuan Xue, Jinfeng Tan, Ge Chen, Yongqi Luo, Ricardo Azziz, Chichiu Wang, Wenming Xu, Xiaomiao Zhao,

ViTCNN: a robust hybrid CNN-Vision Transformer based deep learning framework for multi-disease diagnosis in women's healthcare

Accurate and efficient detection of multiple diseases from diagnostic images remains a major challenge in today's world, especially in women's health conditions such as breast cancer, cervical cancer, and Polycystic Ovary Syndrome (PCOS). Each of these diseases presents its own unique imaging characteristics and visual patterns, making detection of these diseases all together through a single model is highly challenging. In this respect, in order to overcome this, we have proposed a hybrid deep...

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Sonam Juneja, Bhoopesh Singh Bhati, Ghanshyam G Tejani, Seyed Jalaleddin Mousavirad,

Association between oral microbial shifts and polycystic ovary syndrome: a systematic review

CONCLUSIONS: Oral microbiota alterations in PCOS are characterized by consistent Fusobacterium elevation and heterogeneous changes associated with systemic inflammation, metabolic‒endocrine disturbances and poor periodontal health. Despite the limited current evidence, the oral microbiota may serve as a novel entry point for PCOS management. Large, high‑quality prospective studies are warranted to clarify the causal relationship between the oral microbiota and PCOS, and to explore the...

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Qinghua Mao, Chuanxia Liu, Zhimin Yan,

Menstrual Characteristics and the Risk of Spontaneous Abortion - 9 PLADs, China, 2013-2024

WHAT IS ALREADY KNOWN ABOUT THIS TOPIC?: Menstrual irregularity is a hallmark clinical feature of polycystic ovary syndrome (PCOS), which is an established risk factor for spontaneous abortion. However, robust population-level evidence directly linking specific patterns of menstrual irregularity to spontaneous abortion risk remains lacking, as prior studies have been limited by small sample sizes.

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Tsomo Tenzin, Yumei Wei, Yiyao Jin, Jiaxin Li, Xiaowei Wang, Shenfengxiang Feng, Xinyi Lyu, Yuanyuan Xiong, Hanbin Wu, Jueming Lei, Jihong Xu, Yuan He, Yuanyuan Wang, Ya Zhang, Hongguang Zhang, Ying Yang, Xu Ma,

Psychological Morbidity (Stress, Anxiety and Depression) and Fertility Quality of Life amongst Infertile Women with and without Polycystic Ovary Syndrome (PCOS): A Cross-sectional Study

CONCLUSIONS: PCOS women had comparable depression and FertiQoL scores and lower levels of anxiety and stress when compared to non-PCOS women. Longer duration of infertility and obesity were associated with depression and lower quality of life irrespective of cause.

Published on: Fri, 10 Apr 2026 06:00:00 -0400

Authors: Reeta Mahey, Deeksha Patkar, Mani Kalaivani, Chitralok Hemraj, Raman Deep, Aarthi K Jayraj, Robin Badal, Akriti Shukla,