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1H NMR- based metabolomics approaches as non-invasive tools for diagnosis of endometriosis A Comparative Study of Blood Levels of Manganese, Some Macroelements and Heavy Metals in Obese and Non-Obese Polycystic Ovary Syndrome Patients A Comparative Study of the Gut Microbiota Associated With Immunoglobulin a Nephropathy and Membranous Nephropathy A comparative study of the gut microbiota in immune-mediated inflammatory diseases-does a common dysbiosis exist? A comprehensive analysis of breast cancer microbiota and host gene expression A comprehensive analysis of breast cancer microbiota and host gene expression A cross-sectional analysis about bacterial vaginosis, high-risk human papillomavirus infection, and cervical intraepithelial neoplasia in Chinese women A cross-sectional pilot study of birth mode and vaginal microbiota in reproductive-age women A metabonomics approach as a means for identification of potentialbiomarkers for early diagnosis of endometriosis A More Diverse Cervical Microbiome Associates with Better Clinical Outcomes in Patients with Endometriosis: A Pilot Study A Multi-Omic Systems-Based Approach Reveals Metabolic Markers of Bacterial Vaginosis and Insight into the Disease A New Approach to Polycystic Ovary Syndrome: The Gut Microbiota A Review of the Anti-inflammatory Properties of Clindamycin in the Treatment of Acne Vulgaris A Systematic Review and Meta-Analysis of Premenstrual Syndrome with Special Emphasis on Herbal Medicine and Nutritional Supplements. Adherence to the Mediterranean Diet, Dietary Patterns and Body Composition in Women with Polycystic Ovary Syndrome (PCOS)

Role of Metformin in Polycystic Ovary Syndrome (PCOS)-Related Infertility Original paper

Researched by:

  • Divine Aleru ID
    Divine Aleru

    User avatarI am a biochemist with a deep curiosity for the human microbiome and how it shapes human health, and I enjoy making microbiome science more accessible through research and writing. With 2 years experience in microbiome research, I have curated microbiome studies, analyzed microbial signatures, and now focus on interventions as a Microbiome Signatures and Interventions Research Coordinator.

April 27, 2025

  • Women’s Health
    Women’s Health

    Women’s health, a vital aspect of medical science, encompasses various conditions unique to women’s physiological makeup. Historically, women were often excluded from clinical research, leading to a gap in understanding the intricacies of women’s health needs. However, recent advancements have highlighted the significant role that the microbiome plays in these conditions, offering new insights and potential therapies. MicrobiomeSignatures.com is at the forefront of exploring the microbiome signature of each of these conditions to unravel the etiology of these diseases and develop targeted microbiome therapies.

  • Polycystic ovary syndrome (PCOS)
    Polycystic ovary syndrome (PCOS)

    Polycystic ovary syndrome (PCOS) is a common endocrine disorder that affects women of reproductive age, characterized by irregular menstrual cycles, hyperandrogenism, and insulin resistance. It is often associated with metabolic dysfunctions and inflammation, leading to fertility issues and increased risk of type 2 diabetes and cardiovascular disease.

Researched by:

  • Divine Aleru ID
    Divine Aleru

    User avatarI am a biochemist with a deep curiosity for the human microbiome and how it shapes human health, and I enjoy making microbiome science more accessible through research and writing. With 2 years experience in microbiome research, I have curated microbiome studies, analyzed microbial signatures, and now focus on interventions as a Microbiome Signatures and Interventions Research Coordinator.

Last Updated: 2025

Microbiome Signatures identifies and validates condition-specific microbiome shifts and interventions to accelerate clinical translation. Our multidisciplinary team supports clinicians, researchers, and innovators in turning microbiome science into actionable medicine.

Divine Aleru

I am a biochemist with a deep curiosity for the human microbiome and how it shapes human health, and I enjoy making microbiome science more accessible through research and writing. With 2 years experience in microbiome research, I have curated microbiome studies, analyzed microbial signatures, and now focus on interventions as a Microbiome Signatures and Interventions Research Coordinator.

What was reviewed?

This review explores the role of metformin in treating polycystic ovary syndrome (PCOS)-related infertility. PCOS is a common endocrinological disorder that can lead to infertility, characterized by insulin resistance, hyperandrogenism, and anovulation. The review discusses metformin’s mechanisms, its impact on insulin sensitivity, its role in improving ovulation, and its effectiveness in managing metabolic and hormonal imbalances in women with PCOS. The review also emphasizes the drug’s benefits in improving menstrual cyclicity and reducing hyperandrogenism, ultimately aiding in fertility restoration.

Who was reviewed?

The review synthesizes findings from various clinical studies and trials examining the effects of metformin on women with PCOS. It draws on observational studies and randomized controlled trials to evaluate the efficacy of metformin in addressing infertility associated with PCOS. The women studied in these trials typically had anovulatory infertility, hyperandrogenism, and varying degrees of insulin resistance, and they were treated with metformin to assess its impact on ovulation and fertility.

What were the most important findings?

The review found that metformin has significant therapeutic benefits for women with PCOS, particularly in restoring menstrual regularity and improving ovulation rates. Metformin works primarily by improving insulin sensitivity, which reduces hyperinsulinemia—a key factor in the pathogenesis of PCOS. This insulin-sensitizing effect contributes to lower circulating androgen levels, which is crucial in managing symptoms like hirsutism and acne. In several studies, metformin, either alone or in combination with other treatments like clomifene citrate, successfully induced ovulation in women who were resistant to standard treatments.

Furthermore, metformin appears to improve metabolic dysfunctions common in PCOS, including insulin resistance, dyslipidemia, and obesity, all of which contribute to the infertility and long-term health risks associated with the condition. However, the review also noted that while metformin improves metabolic and reproductive outcomes, its efficacy in women with significant obesity is less pronounced. The review also highlights that metformin is generally well-tolerated, although some women may experience gastrointestinal side effects.

What are the greatest implications of this review?

The review underscores metformin’s potential as a first-line treatment for women with PCOS-related infertility, especially for those who are insulin-resistant and non-obese. The findings suggest that metformin could be a safer and more accessible alternative to more invasive fertility treatments like in vitro fertilization (IVF). Moreover, metformin’s role in reducing the risk of ovarian hyperstimulation syndrome during assisted reproductive technology procedures makes it particularly valuable in IVF protocols. The review also emphasizes the need for further studies to determine the optimal dose and long-term benefits of metformin, particularly for women with more severe obesity or metabolic complications.

Polycystic ovary syndrome (PCOS)

Polycystic ovary syndrome (PCOS) is a common endocrine disorder that affects women of reproductive age, characterized by irregular menstrual cycles, hyperandrogenism, and insulin resistance. It is often associated with metabolic dysfunctions and inflammation, leading to fertility issues and increased risk of type 2 diabetes and cardiovascular disease.

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