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BIOLOGY > BUZZWORD

PMS reflects a complex biological network, not an isolated hormonal event.
Emerging research shows that communication between the gut microbiome, endocrine signaling, and neural circuits plays a defining role in how the body adapts across the menstrual cycle.

Pinkmatter’s innovation is centered on applying gut microbiome science and nutritional biochemistry to support this interconnected system

01

The Premenstrual Pathway

A framework that describes how the gut microbiome (and its metabolites), endocrine signals, and neural circuits communicate – a biological network known as the gut-hormone-brain axis.

This pathway influences mood, digestion and overall cycle comfort, especially in the luteal phase.

02

The Gut is the Front Door

A well-supported gut microbiome produces key metabolites like short-chain fatty acids (SCFAs) that help regulate inflammation, support normal estrogen metabolism, and send signals to the nervous and endocrine systems. When the gut ecosystem thrives, those signals are clearer, shaping how you experience mood, energy, digestion, and comfort as your cycle shifts.

To change how PMS feels, start by nurturing the gut.

03

Nutrients Matter

Hormones and neurotransmitters aren’t made in a vacuum. They rely on cofactors, think B-vitamins, magnesium, iron, vitamin D3 + K2, and omega-3s, that participate in normal hormone signaling, neurotransmitter function, and cellular energy. 

Addressing common nutritional gaps helps the Premenstrual Pathway do its job.

Scientific References

The science of PMS is evolving and so is the language around it. These references highlight the interconnected biology between the gut, endocrine system, and brain that shapes how we feel across the cycle.

  1. Yonkers KA, et al. Premenstrual Syndrome. The Lancet. 2008;371(9619):1200–1210. – PMS arises from interacting hormonal, inflammatory, and neurotransmitter pathways, not a single hormone imbalance.
  2. Dubol M, et al. Neuroimaging the Menstrual Cycle: A Multimodal Systematic Review. Front Neuroendocrinol. 2021;60:100878. – Demonstrates how cyclical changes in estrogen and progesterone alter brain connectivity and neurotransmission, showing that PMS symptoms emerge from neuroendocrine communication rather than isolated hormone shifts.
  3. Modzelewski S, et al. Premenstrual Syndrome: New Insights into Etiology and Review of Treatment Methods. Front Psychiatry. 2024;15:1363875. – Reviews emerging PMS research across hormonal, inflammatory, neurotransmitter, and microbiome systems, emphasizing the importance of addressing the gut–hormone–brain network rather than hormones alone.
  4. Le JS, et al. Cognition, the Menstrual Cycle, and Premenstrual Disorders: A Review.Brain Sciences. 2020;10(4):198.– Shows how cyclical hormone shifts shape cognition, mood, and neural activity in PMS.
  5. Cryan JF, et al. The Microbiota–Gut–Brain Axis: From Neurodevelopment to Behavior. Nat Rev Neurosci. 2019;20(10):653–666. – Core evidence for the gut–brain axis and how microbial activity shapes neuroendocrine function and mood.
  6. Baker JM, et al. Estrogen–Gut Microbiome Axis: Physiological and Clinical Implications. Endocr Rev. 2017;38(5):432–448. – Details microbial enzymes that regulate circulating estrogen levels and influence hormonal homeostasis.
  7. Peirce JM, et al. The Role of Inflammation and the Gut Microbiome in Premenstrual Disorders. Psychoneuroendocrinology. 2019;113:104545. – Links inflammation, gut health, and premenstrual mood changes via gut–immune–brain signaling.
  8. Ruggeri RM, et al. Female Reproductive Dysfunctions and the Gut Microbiota. J Mol Endocrinol. 2022;69(3):JME-21-0238. – Evidence for gut–endocrine interactions shaping menstrual and reproductive health.
  9. Ding N, et al. Association Between Gut Microbiota and Menstrual Disorders: A Mendelian Randomization Study. Front Microbiol. 2024;15:1321268.– Genetic evidence linking gut microbiota composition to menstrual disorders.
  10. Takeda T, et al. Characteristics of the Gut Microbiota in Women with Premenstrual Symptoms. PLOS ONE. 2022;17(5):e0268466.– First human evidence identifying gut microbiota differences in women with PMS.
  11. Foster JA, et al. Mind–Body Interface: The Microbiome and the Gut–Brain Axis. Trends Neurosci. 2021;44(9):701–712.– Integrates stress biology, endocrine activity, and neural circuits with microbiome signaling.
  12. Koh A, et al. From Dietary Fiber to Host Physiology: Short-Chain Fatty Acids as Key Bacterial Metabolites. Cell. 2016;165(6):1332–1345. – Describes how SCFAs derived from fiber support anti-inflammatory signaling and systemic communication between gut and body.
  13. Dalile B, et al. The Role of Short-Chain Fatty Acids in Microbiota–Gut–Brain Communication. Nat Rev Gastroenterol Hepatol. 2019;16(8):461–478. – Explains how microbial metabolites like SCFAs act as chemical messengers linking gut, brain, and endocrine function.
  14. Kennedy DO, et al. B Vitamins and the Brain: Mechanisms, Dose and Efficacy. Nutrients. 2016;8(2):68.– B-vitamins as cofactors for neurotransmitter synthesis and energy metabolism.
  15. De Souza MC, et al. Effect of Magnesium Supplementation on Premenstrual Symptoms of Fluid Retention. Clin Drug Investig. 2000;20(5):325–329.– Magnesium shown to support PMS-related symptoms.
  16. Bertone-Johnson ER, et al. Calcium and Vitamin D Intake and Risk of Premenstrual Syndrome. Arch Intern Med. 2005;165(11):1246–1252.– Lower vitamin D/calcium associated with increased PMS risk.
  17. Appleton KM, et al. Omega-3 Fatty Acids and Mood: Meta-Analyses of Clinical Trials. Am J Clin Nutr. 2010;91(3):757–770.– Omega-3s support mood regulation and modulate inflammation.
  18. Chocano-Bedoya PO, et al. Intake of Selected Minerals and Risk of Premenstrual Syndrome.Am J Epidemiol. 2013;177(10):1118–1127. – Higher non-heme iron intake associated with reduced PMS risk.