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

Decreased serum MG53 levels are associated with SHBG and androgen excess in women with polycystic ovary syndrome

Polycystic ovary syndrome (PCOS) is a common endocrine disorder characterized by hormonal and metabolic abnormalities. Mitsugumin-53 (MG53), a multifunctional E3 ubiquitin ligase, is implicated in insulin signaling and oxidative stress regulation, yet its role in PCOS remains unclear. This study aimed to investigate serum MG53 levels in women with PCOS and explore their associations with hormonal, metabolic, and ovarian parameters. In this case-control study, 64 women with PCOS and 64 healthy...

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

Authors: Enes Serhat Coşkun, Fatma Ketenci Gencer, Süleyman Salman, Nilhan Nurlu, Havva Betül Bacak, Serkan Kumbasar, Gözde Yıldırım Timur, Ecenur Çelikoğlu, Şevval Ünlü, Fatma Tunççağ, Rana Güven,

Multiple endocrine dysfunctions in twins with Wilson's disease: two case reports Deng et al. endocrine dysfunctions in Wilson's disease

No abstract

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

Authors: Hong-Rong Deng, Song-Ying Lin, Fei-Ya Zhang, Jin-Hua Yan, Xin-Hua Li, Xu-Bin Yang,

Ethanol-induced NINJ1 oligomerization might contribute to the lytic death of granulosa cells in PCOS

No abstract

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

Authors: Caglar Berkel,

The gut microbiota-metabolite axis in polycystic ovary syndrome: differential characteristics between infertile and conceived populations

CONCLUSION: Infertility in PCOS is associated with distinct gut microbiota and serum metabolite signatures, characterized by specific microbial taxa shifts and metabolic dysregulation. These findings provide potential biomarkers for clinical stratification and offer insights into the microbiota-metabolite-fertility axis in PCOS.

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

Authors: Shen Lin, Shi-Yi Qi, Dan-Ting Ma, Juan Yang, Xue-Li Chen, Tong Lin, Huan-Huan Gao, Hui-Yu Chen, Yu-Nan He, Jie Lin, Jia-Hui Qiu, Di Liu, Jin-Bang Xu,

Effects of probiotic and metformin co-administration versus metformin monotherapy on anthropometric measurements, hormones, and glucolipid profile in women with polycystic ovary syndrome: a systematic review and meta-analysis

CONCLUSIONS: There may be benefit to adding probiotics to metformin therapy for women with PCOS in improving insulin resistance and gastrointestinal tolerability as well as possibly decreasing LH. Heterogeneity between studies, short intervention duration and non-standardized probiotic doses/preparations limit the strength of these findings. Further study with larger, longer, randomized controlled trials that use a standardized probiotic formulation are needed.

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

Authors: Mohammed Hamsho, Wijdan Shkorfu, Meriem Bensaoua, Carlos Eduardo Carvalho Martins, Hale Hacıbayram, Abdulmannan Fadel, Yazan Ranneh,

Association of polycystic ovary syndrome with metabolic syndrome and its components in adolescents: a systematic review and meta-analysis

CONCLUSION: Adolescent PCOS is significantly associated with an elevated risk of MetS, with abnormalities primarily clustered in abdominal obesity, systolic blood pressure, and triglyceride levels. Integrating these three key metrics into routine metabolic screening for adolescents with PCOS is clinically essential. Prioritizing lifestyle interventions to address these risk factors is critical for mitigating long-term cardiometabolic complications.

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

Authors: Yuhui Tu, Yafei Chen, Jianwei Zhang, Jiaping Bao, Jianbo Lou,

Neuropeptide Y Promoter Variant rs16147 (-399 T/C) Is Associated With Susceptibility to Polycystic Ovary Syndrome

Background Polycystic ovary syndrome (PCOS) is a heterogeneous endocrine disorder with complex genetic and neuroendocrine underpinnings. Neuropeptide Y (NPY), a key regulator of energy balance and reproductive function, has been implicated in hypothalamic-pituitary-ovarian (HPO) axis dysregulation. However, data on variants of the NPY gene in PCOS remain limited. This study investigated the association between the NPY promoter variant rs16147 (-399 T/C) and susceptibility to PCOS. Methods In...

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

Authors: Fulya Yukcu, Raziye Akcilar, Ismail Biyik, Halil Ibrahim Sisman,

Body image perception and self-esteem in females with polycystic ovary syndrome: a systematic review and meta-analysis

CONCLUSION: Women with PCOS experience poorer body image perception than healthy controls, with no difference in self-esteem. Integrating psychological assessment into PCOS care, and targeted interventions addressing body image concerns may be beneficial. Further large-scale studies across diverse populations using standardized assessment tools are warranted.

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

Authors: Hyder Mirghani, Amani Shaman,

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,