15 Prebiotic Plants Every Gastroenterologist Should Be Prescribing
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Most people trying to fix their gut are focused on probiotics — the bacteria themselves. What they're missing is the food those bacteria actually need to survive and grow. That's where prebiotics come in, and the best sources aren't in the supplement aisle.
In this video I walk through 15 plants — many of them growing wild in gardens and hedgerows right now — that feed your gut microbiome in ways that commercially processed fiber supplements simply can't replicate. We cover the mechanisms: inulin-type fructans, beta-glucan, mucilaginous polysaccharides, pectin, and oligosaccharides in raw honey. And for each plant, I show you exactly how I prepare it at home.
A few things in this video that surprised even me when I first looked into them properly: dandelion root contains up to 40% inulin by dry weight — comparable to commercial chicory extract. Broadleaf plantain, the weed in your lawn, contains the same gel-forming fiber used in psyllium husk supplements. And the outer layers of a red onion that most people peel off contain the highest quercetin concentration in the whole bulb.
Nothing in this video is medical advice. These are plants with well-documented traditional use and, in most cases, supporting biochemical research. Always talk to your doctor before making significant changes, especially if you're managing a digestive condition.
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SOURCES:
Roberfroid M. Inulin-Type Fructans. J Nutrition, 2007; 137(11):2493S
Shoaib M et al. Inulin: Properties and food applications. Carbohydrate Polymers, 2016; 147:444
Flamm G et al. Inulin and Oligofructose as Dietary Fiber. Crit Rev Food Sci Nutr, 2001; 41(5):353
Brkljača J et al. Inulin in Jerusalem Artichoke. Acta Periodica Technologica, 2014
Nwafor IC et al. Chicory chemical composition. Scientific World Journal, 2017; PMC5745685
Chen L et al. Prebiotic properties of garlic polysaccharides. Frontiers in Nutrition, 2021; PMC8695971
Rahayu WP et al. Garlic FOS prebiotic activity. Veterinary World, 2019; PMC6989317
Wirnkar VL et al. Dandelion in type 2 diabetes. Evid-Based Complement Alt Med, 2017; PMC5553762
Dróżdż P et al. Dandelion bioactive compounds. Nutrients, 2022; PMC9498421
Tieri M et al. Oat consumption and gut microbiota. Current Nutrition Reports, 2024; Springer
Plovier H et al. Akkermansia muciniphila. Nature Medicine, 2017; 23:107
Petropoulos SA et al. Burdock root fructans. Food Research International, 2020; 141:109792
European Medicines Agency. Plantago lanceolata monograph. EMA/HMPC/437859/2010
Duncan SH et al. F. prausnitzii and apple pectin. Appl Environ Microbiology, 2012; PMC3255724
Calderón-Montaño JM et al. Honey as prebiotic food. Frontiers in Nutrition, 2022; PMC9367972
Guarner F, Malagelada JR. Gut flora in health and disease. The Lancet, 2003; 361:512
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Educational content only. Studies referenced are preclinical or limited in human scope. Nothing in this video constitutes medical advice. Consult your healthcare provider before using any herbal preparation therapeutically, especially if you take prescription medication.
Some video footage used in this content is sourced from Vecteezy.
I do not claim ownership over third-party materials.