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

Exploring the biological functions of PCOS: identifying hub androgen-related genes through bioinformatics

Polycystic ovary syndrome (PCOS) is a prevalent reproductive endocrine disorder in women. While the role of androgens in PCOS is well-recognized, the underlying mechanisms warrant further investigation. In this study, we identified potential hub androgen-related genes (ARGs) in PCOS and established diagnostic and classification models to find novel biomarkers for PCOS therapy. Five datasets (GSE34526, GSE80432, GSE95728, GSE124226, and GSE137684) were retrieved from GEO, followed by data...

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

Authors: Xinling He, Lan Su, Ji Yin, Yuanyuan Lai, Han Yang, Zheng Yu, Xiaoyan Zheng, Jia Liu, Jie Yang,

Inhibiting TRIM21 Neddylation Rejuvenates Oocyte Quality in PCOS by Regulating Ubiquitination of CPT1A

Polycystic ovary syndrome (PCOS) is a prevalent endocrine and metabolic disorder affecting women of childbearing age. Infertility caused by ovulatory disorders and low follicle quality is an urgent problem. Abnormal fatty acid oxidation (FAO) contributes critically to the etiology and progression in PCOS. However, the potential mechanism by which FAO affects follicular development in PCOS patients is unclear. Here, we demonstrate that increased expression of tripartite motif-containing protein...

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

Authors: Xinni Na, Jinchi Liu, Yinan Tan, Lingbo Meng, Cuishan Guo, Na Zuo, Wanlin Dai, Ruiting Cong, Bowen Zhang, Wanting Shi, Jia Hu, Junzhi Liang, Shuang Wei, Zhongyu Zhao, Jing Chen, Xinbo Qiao, Da Li,

Global Burden of Polycystic Ovary Syndrome: A Systematic Analysis of Pre- and Post-Pandemic Trends from the 2021 Global Burden of Disease Study (1990-2021)

CONCLUSION: The post-pandemic rise in PCOS burden underscores systemic vulnerabilities in women's endocrine healthcare during health emergencies and signals a growing global health challenge.

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

Authors: Yingwu Guo, Yingrong Du, Lingfang Zhang, Huihui Xu, Jun Liu, Shenghao Li, Zhaoyuan Xu, Junfang Yan, Jie Chen, Huawei Wang,

Integrative Mendelian Randomization and Whole-Blood Transcriptomic Analysis Implicate a Myeloid-Inflammation Axis in Polycystic Ovary Syndrome

CONCLUSION: Genetic and transcriptomic evidence jointly support the concept of a myeloid-inflammation axis in PCOS. The inverse MR association for absolute monocyte count alongside positive risk for CD33^(+)HLA-DR^(+) compartments, together with cross-cohort evidence of myeloid enrichment and inflammatory pathway activation, is compatible with a potential mechanistic link between immune imbalance and PCOS and provides a hypothesis-generating framework for future therapeutic investigation.

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

Authors: Yiman Fu, Weihao Li, Lin Ma,

Editorial: Naturally occurring compounds and their applications in endocrinology: mechanisms, therapeutic potential and clinical applications

No abstract

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

Authors: Ramith Ramu, Shashank M Patil,

Sex-stratified reproductive and cardiometabolic traits among young adult offspring of Chinese women with Polycystic Ovary Syndrome

CONCLUSION: Offspring of women with PCOS exhibited early cardiometabolic and reproductive alterations in young adulthood, characterised by reproductive hormonal abnormalities in daughters and a less favourable cardiometabolic profiles in sons. While insulin sensitivity is largely preserved, subtle impairments in β-cell secretory function emerge after accounting for central adiposity in both sexes. These findings highlight the relevance of early cardiometabolic and reproductive assessment in this...

Published on: Sun, 05 Apr 2026 06:00:00 -0400

Authors: Noel Y H Ng, Atta Y T Tsang, Claudia H T Tam, Karen Ng, Yingchai Zhang, Lai Ping Cheung, Jacqueline P W Chung, Michael H M Chan, Cs Ho, Alice P S Kong, Andrea O Y Luk, Juliana C N Chan, Chi Chiu Wang, Wing Hung Tam, Ronald C W Ma,

Lead exposure acts as a risk factor of PCOS development via SOD2-mediated mtDNA leakage

Lead (Pb), a ubiquitous environmental pollutant, contributes to the development of various diseases. But little information is available regarding its effect on polycystic ovary syndrome (PCOS) that is the main cause of female infertility. Here, we discovered that Pb exposure replicated the PCOS-like phenotypes in mice via the advancement of ovarian inflammatory response. After transferring to the mitochondria, Pb disrupted the interaction of Mn^(2+) and SOD2, and then decreased the enzymatic...

Published on: Sun, 05 Apr 2026 06:00:00 -0400

Authors: Qiaoling Zhang, Yinfei Xing, Shijie Li, Zhanqing Yang, Baiyu Li, Lilei Zhao, Liang Yue, Bin Guo,

Bushen Huatan Formula Combined with Conventional Therapy for Polycystic Ovary Syndrome: A Systematic Review and Meta-analysis

CONCLUSION: The combination of BHF and conventional medications significantly improved pregnancy and ovulation rates, as well as endometrial thickness, in PCOS patients compared to conventional treatment alone. This suggests that BHF could serve as a complementary therapy for infertility in PCOS patients. However, these findings should be interpreted with caution due to significant heterogeneity and methodological limitations in the included studies.

Published on: Sun, 05 Apr 2026 06:00:00 -0400

Authors: Yaru Wang, Qingrui Zhang, Menghan Jin, Shuai Zhang,

Gut microbiota and pattern recognition receptors in polycystic ovary syndrome

Polycystic ovary syndrome (PCOS) is increasingly recognized as a disorder of impaired immune-endocrine homeostasis. Emerging evidence indicates that intestinal dysbiosis and microbial metabolite imbalance can activate pattern recognition receptors (PRRs), forming a PRR microbiota reproductive axis that contributes to PCOS pathophysiology. This review synthesizes current insights into how gut-derived signals, including LPS, peptidoglycans, SCFAs, bile acids, and tryptophan metabolites, modulate...

Published on: Sun, 05 Apr 2026 06:00:00 -0400

Authors: Jintao Yuan, Shiqiong Sun, Essam H Ibrahim, Muhammad Azhar Ud Din, Fei Mao, Suping Du,

Aberrant DNMTs Promote TXNIP Upregulation and Ovarian Fibrosis in PCOS

Hyperandrogenism and elevated thioredoxin-interacting protein (TXNIP) are potential causes of infertility in women with polycystic ovary syndrome (PCOS). Epigenetic regulation of TXNIP mediates oxidative stress and inflammatory activation. However, the precise mechanisms including epigenetic regulation in PCOS are poorly understood. In this study, aberrant TXNIP in dehydroepiandrosterone (DHEA)-induced rat PCOS ovaries and dihydrotestosterone (DHT)-induced PCOS primary granulosa cells (GCs)...

Published on: Sat, 04 Apr 2026 06:00:00 -0400

Authors: Yajing Weng, Luxi Shangguan, Qi Shen, Zhengquan Zhu, Yaling Zhang, Jingwen Zhang, Guijun Yan, Shanmei Shen, Zou Xiang, Jianguo Ruan, Yanting Wen, Daojuan Wang, Yong Wang,

Protocol flexibility in PCOS: a combination of controlled ovarian stimulation and endometrial preparation strategies shows no impact on live birth outcomes after frozen embryo transfer-a retrospective cohort study

CONCLUSIONS: For PCOS patients, live birth success is equivalent regardless of COS/FET protocol combination, supporting flexible treatment personalization. Clinical decision-making involves a critical trade-off: GnRH agonist protocols and ovulation FET cycles may be associated with a trend toward lower obstetric morbidity, potentially linked to the promotion of a more physiological ovulatory milieu. This balance between immediate iatrogenic risk and long-term pregnancy health warrants further...

Published on: Sat, 04 Apr 2026 06:00:00 -0400

Authors: Dongdong Chen, Ming-Hui Chen, Zeng-Yan Wang, Lu Luo, Yanwen Xu, Dan Zhang,

Synergistic Interplay of Acceptor and Isovalent Co-Doping on BaZrO3-Based Proton Conducting Oxides: A First-Principles Study

Acceptor-doped BaZrO(3) (BZO) with an ABO3-type structure is a promising proton-conducting oxide (PCO) for fuel cells and electrolyzers. However, dehydration at elevated temperatures significantly reduces proton concentration, hindering commercialization. While recent studies have shown that isovalent co-doping in acceptor-doped systems improves hydration performance, the dehydration remains unresolved due to a lack of fundamental understanding of these co-doping effects. In this study,...

Published on: Sat, 04 Apr 2026 06:00:00 -0400

Authors: Yonghun Shin, Kyung-Yeon Doh, June Ho Lee, Shin Hyun Kim, Donghwa Lee,

Evaluation of a fluorescent-based point-of-care AMH assay: A bicentric assessment of analytical performance, method agreement, and usability

CONCLUSIONS: The fluorescent-based AMH POCT assay demonstrated acceptable analytical performance, strong correlation with a routine laboratory method, and favourable usability. However, until harmonisation across methods is achieved, cautious interpretation and confirmatory laboratory testing remain essential when results are close to clinical decision thresholds.

Published on: Sat, 04 Apr 2026 06:00:00 -0400

Authors: Ali Khatib, Damien Gruson, Iman Azariouh, Soukayna Draoui, Wearm Zreikat, Gheyath K Nasrallah,

Eating attitudes, sleep quality, and self-esteem in adolescents diagnosed with polycystic ovary syndrome

OBJECTIVE: To investigate the risk of eating disorders, poor sleep quality and low self-esteem in adolescents with polycystic ovary syndrome (PCOS) in comparison with a healthy group and to determine how these factors are related to each other as well as which disease characteristics may influence them.

Published on: Sat, 04 Apr 2026 06:00:00 -0400

Authors: Ozlem Ketenci Altikardesler, Ozlem Dural, Ipek Evruke, Hevra Ekin Ulusoy, Melike Zeynep Tugrul Aksakal, Firdevs Bas,

PCOS in women with normal body mass index is not associated with adverse obstetric and perinatal outcomes after IVF-FET

CONCLUSIONS: Among women with normal BMI, PCOS is not associated with increased obstetric and perinatal complications compared with controls following FET.

Published on: Fri, 03 Apr 2026 06:00:00 -0400

Authors: Qiuyu Xu, Shuwen Qiu, Xiaoyan Mao, Ling Wu, Jie Zhang,