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Plugged Ducts and Mastitis: Do Choline, Lecithin, or Probiotics Actually Help?

  • Writer: Rebecca McCann
    Rebecca McCann
  • 21 hours ago
  • 5 min read
Assorted capsules and tablets in yellow, brown, white, green, and black scattered on a textured white background. No visible text.

If you’ve ever searched online for tips about plugged ducts and mastitis, you’ve likely seen a wide range of recommendations — including sunflower lecithin or probiotic supplements. But what’s the story behind these recommendations, and are they truly evidence-based?



Sunflower Lecithin for Plugged Ducts: Friend or Foe?


Sunflower lecithin is an emulsifier that has been thought to reduce milk “congealing,” thereby lowering the risk of plugged ducts. However, there are several problems with this theory. 


First, there is limited research supporting the claim that lecithin prevents plugged ducts, and there are no high-quality clinical studies evaluating the safety or effectiveness of high-dose lecithin supplementation during lactation (1).


Second, newer understanding of breast anatomy and physiology suggests that plugged ducts are not caused by congealed milk blocking a duct. Instead, they are now understood to result from inflammation within the breast tissue that compresses the milk duct from the outside. This narrowing slows milk flow and can create the sensation of a “clog.” 


Finally, some research suggests that certain dietary emulsifiers (like sunflower lecithin) may negatively affect the gut microbiome and promote inflammation. A 2021 study found that “emulsifiers can directly alter gut microbiota in a manner expected to promote intestinal inflammation” (2). These findings raise an important question: if inflammation contributes to or causes plugged ducts, could routine lecithin supplementation be counterproductive? 


So if not sunflower lecithin, is there anything we can take to prevent plugged ducts and promote breast health? One possibility is a key component of lecithin itself — and one that may be responsible for some of the benefits people report when they take it. Enter choline, an essential nutrient that may play a role in breast health.



Choline and Its Role in Breast Health


Choline is an essential nutrient that supports cell membrane structural integrity, immune regulation, and inflammatory signaling. It also plays important roles in metabolism, nervous system function, and brain development. 


Choline requirements increase during pregnancy and reach their highest levels during lactation. This is because choline is needed not only to support maternal physiology but is also actively transported into human milk to support infant growth and neurological development. 


In addition to supporting infant development, choline may also have implications for breast health during lactation due to its involvement in maintaining cellular integrity and regulating inflammatory responses. Some studies suggest that higher choline intake during pregnancy and lactation is associated with reduced inflammatory markers in mothers, including during the postpartum period (5, 6). Additionally, while animal studies cannot be directly applied to humans, research in dairy science has observed lower rates of mastitis in cows receiving choline supplementation (7). 


Suboptimal choline intake has been associated with increased systemic inflammation, and animal studies consistently show greater inflammation and tissue damage in states of choline deficiency. Unfortunately, studies indicate that the vast majority of individuals do not meet recommended choline intake levels (8, 9), and many prenatal and postnatal vitamins contain little or no choline. 


If choline intake is commonly inadequate — particularly when requirements increase during lactation — it is reasonable to ask whether insufficient intake could contribute to inflammatory breast conditions such as plugged ducts or mastitis. At present, this remains a hypothesis requiring further research. 



Getting Enough Choline


According to the National Institutes of Health, recommended choline intake is:

  • 450 mg per day during pregnancy

  • 550 mg per day during lactation (3) 


So how can lactating parents meet these needs? 


Supplementation may be helpful, particularly if a prenatal or postnatal vitamin does not contain adequate choline. However, increasing dietary intake is often the most practical and sustainable approach. 


Primary sources of choline include animal products such as meat, poultry, fish, dairy, and eggs — with eggs being one of the richest and most accessible sources. Additional sources include soybeans, kidney beans, quinoa, nuts, seeds, milk, and whole grains.



Probiotics: Helpful for Preventing Plugged Ducts and Mastitis?


Another commonly discussed nutritional strategy for preventing plugged ducts and mastitis is probiotic supplementation. 


Probiotics support a healthy gut microbiome, which plays an important role in immune regulation and inflammatory balance. Emerging evidence suggests certain probiotic strains may help reduce the risk of mastitis, though studies remain limited and results are mixed (13, 14, 15).


Current clinical guidance suggests that, when probiotic supplementation is considered, strains such as Limosilactobacillus fermentum or, preferably, Ligilactobacillus salivarius may be beneficial. More research is needed to determine optimal dosing, duration, and clinical effectiveness.




Bottom Line: Supporting Breast Health Through Nutrition


Though research on the role of choline and probiotics in breast health is still limited, there are a few simple things you can do to support breast health through your diet. 



Boost Your Choline Intake

Choline is essential for infant development and may also support maternal breast health — yet most people consume far less than recommended amounts.


Consider increasing dietary sources of choline, including: 

  • Eggs

  • Beef

  • Poultry

  • Soybeans

  • Kidney beans

  • Quinoa

  • Milk

  • Brussels sprouts and broccoli. 



If dietary intake is insufficient, a choline supplement may be worth discussing with your healthcare provider.



Support a Healthy Gut Microbiome


Diets that include prebiotic and probiotic foods promote gut health and may also help reduce systemic inflammation. 


Prebiotic foods include:  garlic, onions, leeks, underripe bananas, oats, flaxseed, legumes, dandelion greens, and Jerusalem artichokes


Probiotic foods include: yogurt with live active cultures, kefir, sauerkraut, kimchi, miso, tempeh, kombucha, and fermented pickles


For those experiencing recurrent plugged ducts or mastitis, probiotic supplementation (particularly L. fermentum or L. salivarius) may be considered in consultation with a healthcare provider. 



While no single supplement can prevent breast inflammation, nutrition may be one piece of a larger picture supporting breast health during lactation. 



References:

  1. Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006-. Lecithin. [Updated 2026 Feb 15]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK501772/

  2. Naimi S, Viennois E, Gewirtz AT, Chassaing B. Direct impact of commonly used dietary emulsifiers on human gut microbiota. Microbiome. 2021 Mar 22;9(1):66. doi: 10.1186/s40168-020-00996-6. PMID: 33752754; PMCID: PMC7986288. 

  3. https://ods.od.nih.gov/factsheets/Choline-HealthProfessional/?fbclid=IwAR1v5MqewnxghHkz0d2rpNkeejeaKrnW_44FxNQvKPanwEDyzoGt5mpCR4o_aem_AVzZlfDga3LCPfo2xDux5ciA8gP6EpHHHOvhO7mTDTONnOTiFHVdjNQvFkt7XBBxFyI

  4. https://infantrisk.com/content/choline-during-pregnancy-lactation

  5. Ozarda Y, Cansev M, Ulus IH. Breast milk choline contents are associated with inflammatory status of breastfeeding women. J Hum Lact. 2014 May;30(2):161-6. doi: 10.1177/0890334413508004. Epub 2013 Nov 5. PMID: 24194609.

  6. Larson EA, Smith LE, Flores A, Lam A, Syed A, Perng W, Field CJ. Recent Choline Intake Is Inversely Associated with Inflammation in Pregnancy - Evidence from the Canadian APrON Cohort. J Nutr. 2026 Feb;156(2):101278. doi: 10.1016/j.tjnut.2025.101278. Epub 2025 Dec 30. PMID: 41478590; PMCID: PMC12975367.

  7. Alfredo Gutiérrez, A. G. R., C. Sánchez, and G. D. Mendoza. “Effect of Including Herbal Choline in the Diet of a Dairy Herd; A Multiyear Evaluation”. Emirates Journal of Food and Agriculture, vol. 31, no. 6, Aug. 2019, pp. 477-81, doi:10.9755/ejfa.2019.v31.i6.1971.

  8. Derbyshire, E. J. (2025). Choline in Pregnancy and Lactation: Essential Knowledge for Clinical Practice. Nutrients, 17(9), 1558. https://doi.org/10.3390/nu17091558

  9. Wallace TC, Fulgoni VL. Usual Choline Intakes Are Associated with Egg and Protein Food Consumption in the United States. Nutrients. 2017 Aug 5;9(8):839. doi: 10.3390/nu9080839. PMID: 28783055; PMCID: PMC5579632.

  10. Canty DJ, Zeisel SH. Lecithin and choline in human health and disease. Nutr Rev. 1994 Oct;52(10):327-39. doi: 10.1111/j.1753-4887.1994.tb01357.x. PMID: 7816350.

  11. https://news.asu.edu/20251125-health-and-medicine-surprising-connection-between-obesity-choline-and-brain-inflammation

  12. Mitchell KB, Johnson HM, Rodríguez JM, Eglash A, Scherzinger C, Zakarija-Grkovic I, Cash KW, Berens P, Miller B; Academy of Breastfeeding Medicine. Academy of Breastfeeding Medicine Clinical Protocol #36: The Mastitis Spectrum, Revised 2022. Breastfeed Med. 2022 May;17(5):360-376. doi: 10.1089/bfm.2022.29207.kbm. Erratum in: Breastfeed Med. 2022 Nov;17(11):977-978. doi: 10.1089/bfm.2022.29207.kbm.correx. PMID: 35576513.

  13. Amir LH, Griffin L, Cullinane M, Garland SM. Probiotics and mastitis: evidence-based marketing? Int Breastfeed J. 2016 Jul 21;11:19. doi: 10.1186/s13006-016-0078-5. PMID: 27446229; PMCID: PMC4955247.

  14. Barker M, Adelson P, Peters MDJ, Steen M. Probiotics and human lactational mastitis: A scoping review. Women Birth. 2020 Nov;33(6):e483-e491. doi: 10.1016/j.wombi.2020.01.001. Epub 2020 Mar 4. PMID: 32146088.

  15. Crepinsek MA, Taylor EA, Michener K, Stewart F. Interventions for preventing mastitis after childbirth. Cochrane Database Syst Rev. 2020 Sep 29;9(9):CD007239. doi: 10.1002/14651858.CD007239.pub4. PMID: 32987448; PMCID: PMC8094918.

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