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

Association of emerging alternatives to per- and polyfluoroalkyl substances with polycystic ovary syndrome among Chinese women: a case-control study

Per- and polyfluoroalkyl substances (PFAS) have been previously associated with polycystic ovary syndrome (PCOS). However, the health effects of emerging PFAS alternatives on PCOS remain unclear. This study aims to examine the associations between exposure to emerging PFAS alternatives and the odds of PCOS, while also exploring the combined effects of PFAS mixture exposure. From 2019 to 2024, we conducted a case-control study in Jiangsu Province, China, including 94 women diagnosed with PCOS and...

Published on: Fri, 16 Jan 2026 06:00:00 -0500

Authors: Yongmei Li, Suya Kang, Hui Xu, Yue Zhang, Hui Li, Jun Yan, Liping Zhou,

Onecut2, negatively regulated by methyltransferase METTL3, inhibits polycystic ovary syndrome by transcriptionally modulating SIRT3 expression

Polycystic ovary syndrome (PCOS) is characterized by a constellation of symptoms, including menstrual cycle irregularities, hyperandrogenism, and polycystic ovarian morphology. Despite extensive research efforts, a thorough understanding of the underlying pathophysiology and effective treatment options for PCOS remain elusive. In this study, ovarian tissues from dehydroepiandrosterone (DHEA)-induced PCOS mice and control mice underwent mRNA sequencing. Through a comprehensive bioinformatics...

Published on: Fri, 16 Jan 2026 06:00:00 -0500

Authors: Mingxing Sui, Shuying Wu, Qingqing Song, Siyao Chen, Yingli Lu,

Tianjing Zelan formula improves polycystic ovary syndrome by regulating steroid biosynthesis and arachidonic acid metabolism

CONCLUSION: TJZL exerts beneficial therapeutic effects on PCOS in both clinical and laboratory studies. TJZL improves PCOS by regulating multiple endogenous metabolites and correcting abnormal steroid synthesis and arachidonic acid metabolism in the ovaries. Our research provides a promising therapeutic agent for PCOS patients.

Published on: Fri, 16 Jan 2026 06:00:00 -0500

Authors: Huili Zheng, Tingting Shang, Wenting Gao, Luyao Zhou, Peijuan Wang, Qingling Ren, Hongjuan Yu, Qun Zhan, Chunyun Liang, Qiuyan Shi, Yachun Shu, Sheng Guo, Shulan Su, Yue Zhu, Jin-Ao Duan,

Exploring the mechanism link between endocrine disrupting chemicals and metabolic diseases: Observational and GWAS evidence

Endocrine disrupting chemicals (EDCs) are widespread environmental contaminants that may contribute to the development of metabolic diseases. However, their causal roles and biological mechanisms remain unclear. This study aimed to investigate the associations between EDC exposure and metabolic disorders by integrating epidemiological and genetic approaches. A pooled analysis of 53 observational studies, comprising 109394 participants, demonstrated that EDC exposure significantly increased the...

Published on: Fri, 16 Jan 2026 06:00:00 -0500

Authors: Lang Wang, Xiaoyu Liu, Chenyu Xiang, Xinpeng Shu, Xurui Liu, Junnan Zhao, Siqi Li, Rongbin Xu, Bo Chen, Bing Kang, Dong Peng,

Mitochondrial AR overactivation coupled with uterine decidual mitochondrial defects in PCOS-associated pregnancy loss

Nuclear androgen receptor (AR) dysregulation characterizes polycystic ovary syndrome (PCOS) pathophysiology and contributes to mitochondrial dysfunction-related adverse pregnancy outcomes. However, ARs also localize to mitochondria in many cell types, and mitochondrial dysfunction is implicated in the underlying pathogenesis of PCOS. In this study, human endometrial decidual basalis tissues and rat gravid uterine tissues were collected, and subcellular fractionation, Western blot, quantitative...

Published on: Fri, 16 Jan 2026 06:00:00 -0500

Authors: Yuehui Zhang, Min Hu, Linus R Shao, Lingjing Lu, Jing Han, Tingting Guo, Meng Jiang, Yao Wu, Han Han, Peng Cui, Mats Brännström, Amanda Nancy Sferruzzi-Perri, Håkan Billig,

Risk Factors and Pregnancy Outcomes of Twin Pregnancies With Gestational Diabetes Mellitus: A Comparison Based on Chorionicity

CONCLUSION: The risk factors and pregnancy outcomes associated with GDM in twin pregnancies vary by chorionicity.

Published on: Fri, 16 Jan 2026 06:00:00 -0500

Authors: Shuai Huang, Xiaoyan Li, Jing Zheng, Gao Qiu, Ping Luo, Lu Mao, Hongbo Qi,

Somatotype, metabolic features, and psychological distress in women with polycystic ovary syndrome: a case-control study

No abstract

Published on: Fri, 16 Jan 2026 06:00:00 -0500

Authors: Vijayakumar K, Rajesh Karekar, Pranavi Sharma,

Analysis of Fatty Liver Prevalence in Non-Obese Women Diagnosed with Polycystic Ovary Syndrome

CONCLUSION: Non-obese women with PCOS had a higher prevalence of fatty liver, with minor differences in metabolic parameters, and BMI partly mediated these associations.

Published on: Thu, 15 Jan 2026 06:00:00 -0500

Authors: Fateme Amiri, Homeira Rashidi, Leila Moradi, Seyedbahman Ghderian, Reyhanesadat Taghavi,

Identification and Evaluation of Menstruation-Related Disorders in Adolescent Girls Attending a Tertiary Care Center: An Observational Study

Background Menstrual disorders such as dysmenorrhea, menorrhagia, oligomenorrhea, and premenstrual syndrome are believed to be the most common yet under-recognized causes of morbidity in adolescent girls. Many adolescents around the world experience menstrual dysfunction, and in India, cultural stigma, poor awareness, and nutritional imbalance are believed to exacerbate the burden. Despite national initiatives focusing on menstrual hygiene and anemia prevention, only a few studies in India have...

Published on: Thu, 15 Jan 2026 06:00:00 -0500

Authors: Pragya Prem, Veena S R, Meena T S, Revathy T G,

The interaction between endoplasmic reticulum stress and ferroptosis in ovarian diseases

No abstract

Published on: Thu, 15 Jan 2026 06:00:00 -0500

Authors: Min Xing, Jing Li, Xiaolan Wu, Ruyi Zhang, Lan Li, Huiping Liu,

Polycystic ovary syndrome in women with bipolar affective disorder or epilepsy exposed to valproic acid: a nationwide 16-year cohort study

CONCLUSIONS: Valproate exposure was associated with an increased risk of PCOS. The risk was especially pronounced during current and cumulative exposure, whereas overall cumulative exposure suggested increased risk at higher thresholds. These findings suggest that PCOS risk may be driven by acute pharmacological effects, although long-term cumulative use may also contribute. The results reinforce recommendations to avoid valproate in women of reproductive age when possible.

Published on: Wed, 14 Jan 2026 06:00:00 -0500

Authors: Maria Holmskov, Jakob Christensen, Mie Frederiksen Larsen, Ann-Eva Christiansen, René Ernst Nielsen,

Time-Restricted Eating to Improve Metabolic Abnormalities in Polycystic Ovarian Syndrome (TimeMAP)

CONCLUSION: In a 12-week cross-over feasibility study, TRE was a safe and feasible intervention. Recruitment was challenging and with limited numbers, the TRE group showed a decrease in HbA1c and anthropometric indices compared to the 'ad libitum' group.

Published on: Wed, 14 Jan 2026 06:00:00 -0500

Authors: Ruairí Floyd, Adam Dyer, James Gibney, Fatimah Alawami, Lisa Owens, Niamh Phelan, Ana Rakovac, Patrick Swan, Carel W LeRoux, Lucy Ann Behan, Sinead N Duggan,

Lemongrass (Cymbopogon citratus) Extracts Ameliorate Polycystic Ovary Syndrome in Rats by Inhibiting Follicular Atresia and Modulating Ghrelin and Leptin

Polycystic ovary syndrome (PCOS) accelerates ovarian follicular depletion through atresia. This study investigated the therapeutic potential of aqueous (AE) and hydroethanolic (HEE) extracts of Cymbopogon citratus in mitigating PCOS-induced ovarian damage (specifically ferroptosis, apoptosis, and oxidative stress) in a rat model of PCOS. PCOS was induced by oral administration of letrozole (1 mg/kg/day for 21 days), followed by treatment with AE or HEE (100, 200, or 400 mg/kg/day for 20 days)...

Published on: Wed, 14 Jan 2026 06:00:00 -0500

Authors: Vanis Slauvers Akago, Marie Alfrede Mvondo, Sefirin Djiogue, Stephen Lacmata Tamekou, Nina-Sonia Messongue Mbollo, Josue Jobin Biba, Agatha Yelah Ntumnyuy, Lylie Gisèle Atsafack Mboudem, Perpetue Atsama Mbede, Christophe Mezui, Hélène Carole Edima-Durand, Jules-Roger Kuiate, Dieudonné Njamen,

The Combinatory Effect of Salvia officinalis and Nigella sativa Extracts on Polycystic Ovarian Syndrome Induced in Mice

CONCLUSION: This study showed that the combined effect of Nigella sativa and Salvia officinalis was better able to treat PCOS and may replace Metformin to improve PCOS-induced abnormalities.

Published on: Wed, 14 Jan 2026 06:00:00 -0500

Authors: Hiba Faour, Samah Hachem, Miriam Al Battal, Jamilah Borjac,

Therapeutic Effects of Phytoestrogen Naringenin in Polycystic Ovary Syndrome (PCOS): Involvement of Kisspeptin and Calcitonin Gene Related Peptide Signalling Pathways

CONCLUSIONS: Naringenin may ameliorate PCOS by downregulating hypothalamic Kiss1 and Cgrp gene expression in rats. These results suggest a novel mechanism of naringenin's action and highlight its potential for clinical application.

Published on: Wed, 14 Jan 2026 06:00:00 -0500

Authors: Manizheh Habibi, Fariba Mahmoudi, Khadijeh Haghighat, Homayoun Khazali,