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Background <p>Studies have shown that altering dietary fiber intake may help alleviate symptoms and improve health outcomes for polycystic ovary syndrome (PCOS) in women. This systematic review intends to assess dietary fiber intake amongst PCOS individuals and assess if modifying fiber is a useful and positive intervention for otherwise healthy obese and non-obese PCOS patients.</p> Methods <p>PubMed was searched in correlation with the use of a specific search strategy, screening process, and PRISMA checklist to locate available RCT and observational studies.</p> Results <p>The studies provided are reasonably consistent in observing weight loss and aspects of positive metabolic outcomes. Anthropometrics include reductions in body mass index (BMI), waist circumference (WC), and total body fat. Glucose regulation is indicated through reductions of fasting blood sugar (FBS), fasting insulin, and homeostatic model assessment of insulin resistance (HOMA-IR). Improving insulin sensitivity through increasing fiber intake may impact luteinizing hormone (LH) and follicular stimulating hormone (FSH) levels. Regarding hormones, these studies suggest a relationship between elevated LH levels amongst PCOS individuals at baseline. Although many studies did not measure LH and FSH, a modest reduction in LH levels and a minimal reduction of FSH after a dietary intervention involving increased fiber was observed. The underlying mechanism may include increasing fiber intake to improve glucose homeostasis and subsequent insulin resistance (IR) and sensitivity.</p> Conclusion <p>Overall findings conclude that improved fiber intake is associated with positive effects on metabolic and anthropometric outcomes in PCOS women. Hormonal impacts regarding dietary fiber remain unclear. However, the mechanism between decreased IR by increased fiber intake is not yet apparent. The inconclusive findings regarding these aspects may be due in part to insufficient existing literature. Therefore, while there is growing evidence to support the role of fiber in managing PCOS symptoms, additional research is needed to establish its relationship in improving both metabolic and reproductive outcomes in this population.</p>

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Impact of dietary fiber on PCOS: a systematic review

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月3日

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  • Cassandra M. Swanson,
  • Yates Barker,
  • Ryan Patterson

摘要

Background

Studies have shown that altering dietary fiber intake may help alleviate symptoms and improve health outcomes for polycystic ovary syndrome (PCOS) in women. This systematic review intends to assess dietary fiber intake amongst PCOS individuals and assess if modifying fiber is a useful and positive intervention for otherwise healthy obese and non-obese PCOS patients.

Methods

PubMed was searched in correlation with the use of a specific search strategy, screening process, and PRISMA checklist to locate available RCT and observational studies.

Results

The studies provided are reasonably consistent in observing weight loss and aspects of positive metabolic outcomes. Anthropometrics include reductions in body mass index (BMI), waist circumference (WC), and total body fat. Glucose regulation is indicated through reductions of fasting blood sugar (FBS), fasting insulin, and homeostatic model assessment of insulin resistance (HOMA-IR). Improving insulin sensitivity through increasing fiber intake may impact luteinizing hormone (LH) and follicular stimulating hormone (FSH) levels. Regarding hormones, these studies suggest a relationship between elevated LH levels amongst PCOS individuals at baseline. Although many studies did not measure LH and FSH, a modest reduction in LH levels and a minimal reduction of FSH after a dietary intervention involving increased fiber was observed. The underlying mechanism may include increasing fiber intake to improve glucose homeostasis and subsequent insulin resistance (IR) and sensitivity.

Conclusion

Overall findings conclude that improved fiber intake is associated with positive effects on metabolic and anthropometric outcomes in PCOS women. Hormonal impacts regarding dietary fiber remain unclear. However, the mechanism between decreased IR by increased fiber intake is not yet apparent. The inconclusive findings regarding these aspects may be due in part to insufficient existing literature. Therefore, while there is growing evidence to support the role of fiber in managing PCOS symptoms, additional research is needed to establish its relationship in improving both metabolic and reproductive outcomes in this population.