The best way to feed your gut bacteria is on your plate. Here's a practical list of foods that naturally contain prebiotic fibers, plus tips for adding them without discomfort.
Written by Vita Globe Editorial Team | Reviewed against the ISAPP prebiotic consensus, Monash University FODMAP research and peer-reviewed reviews
What foods are high in prebiotics?
Prebiotics occur naturally in foods such as leeks, asparagus, chicory, Jerusalem artichokes, garlic, onions, wheat, oats and soybeans[1]. Monash University also lists artichoke, spring onion, and wheat and rye breads among foods rich in fructans, a common prebiotic group[2]. Because prebiotics are selectively used by beneficial microbes[3], eating a variety of these foods regularly is a simple, food-first way to support your gut.
Caveat: Many prebiotic foods are also high-FODMAP foods, which can trigger symptoms in people with IBS[4].
Sources: Slavin 2013 · Monash FODMAP · ISAPP 2017 · ACG IBS guideline · Verified 2026-09-27
In this article
What are prebiotics, again?
A prebiotic is "a substrate that is selectively utilized by host microorganisms conferring a health benefit"[3]. Prebiotic dietary fibers are fermented in the colon and act as fuel for gut bacteria[5]. For a deeper introduction, read Feeding Your Gut for Good: The Power of Prebiotics.
The prebiotic foods list
| Category | Foods |
|---|---|
| Vegetables | Leeks, asparagus, onions, garlic, Jerusalem artichokes, chicory[1]; artichoke, spring onion[2] |
| Grains | Wheat, oats[1]; wholemeal and rye bread, wheat pasta, rye crispbread[2] |
| Legumes | Soybeans[1] |
| Nuts | Cashews and pistachios, which contain GOS and fructans[2] |
A 2018 review grouped prebiotic dietary fibers into several categories and noted that, while results differ between studies, all of them support digestive wellness through fermentation[5]. That's a good reason to eat a mix rather than relying on one food.
Easy ways to eat more prebiotic foods
- Cook with onions, garlic and leeks as a base for soups, sauces and stir-fries.
- Choose oats for breakfast and whole wheat or rye bread over white.
- Roast asparagus or artichokes as a side.
- Snack on a small handful of cashews or pistachios.
- Add soybeans (edamame) to salads and bowls.
Go slowly. Mayo Clinic suggests adding fiber over a few weeks so your gut bacteria can adjust, and drinking plenty of water[6].
A note on IBS and FODMAPs
Many prebiotic foods, including garlic, onion, leek and wheat, are rich in fructans, which are FODMAPs[2]. The American College of Gastroenterology recommends a limited trial of a low-FODMAP diet to improve IBS symptoms[4]. If you have IBS, work with a dietitian so you can reintroduce foods you tolerate rather than cutting prebiotics out long term. See also Can Fiber Gummies Cause Gas and Bloating?
The honest summary
- Many everyday foods such as onions, garlic, leeks, asparagus, oats and wheat contain prebiotics[1].
- Variety and consistency matter more than any single "superfood."
- Increase slowly to avoid gas[6].
- People with IBS may need a tailored, FODMAP-aware approach[4].
- Supplements can top up, but food is the foundation.
Our option
Vita Globe Happy Gut Bundle
Three of our gut-focused gummies in one bundle: Sugar Free Prebiotic Fiber Gummies, Apple Cider Vinegar Gummies and Super Probiotic Gummies. Suggested use is one fiber gummy, one ACV gummy and two probiotic gummies daily. It's a routine to pair with, not replace, a prebiotic-rich diet. Read more in The Happy Gut Bundle: What Each Ingredient Is Actually Backed By.
Frequently asked questions
What is the best prebiotic food?
There isn't one best food. Variety across onions, garlic, leeks, asparagus, oats, wheat and legumes gives your gut bacteria a range of fibers[1].
Is garlic a prebiotic food?
Yes. Garlic is among the foods that naturally contain prebiotics[1]. It's also rich in fructans, so people with IBS may need to limit it[2].
Do I need a prebiotic supplement if I eat these foods?
Not necessarily. A varied, fiber-rich diet provides prebiotics naturally. Supplements may help with consistency.
Are prebiotic foods good for IBS?
Some may trigger symptoms because they are high in FODMAPs[2]. A dietitian-guided low-FODMAP trial can help identify your triggers[4].
What is the difference between prebiotic and probiotic foods?
Prebiotic foods contain fibers that feed gut bacteria[3]; probiotic foods, like some yogurts, contain live microbes. See Probiotics vs. Prebiotic Fiber Gummies.
Sources
- Slavin J. Fiber and prebiotics: mechanisms and health benefits. Nutrients. 2013;5(4):1417-1435. doi:10.3390/nu5041417
- Monash University. High and low FODMAP foods. Monash FODMAP. Accessed 2026-09-27. monashfodmap.com
- Gibson GR, Hutkins R, Sanders ME, et al. Expert consensus document: The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on the definition and scope of prebiotics. Nat Rev Gastroenterol Hepatol. 2017;14(8):491-502. doi:10.1038/nrgastro.2017.75
- Lacy BE, Pimentel M, Brenner DM, et al. ACG Clinical Guideline: Management of Irritable Bowel Syndrome. Am J Gastroenterol. 2021;116(1):17-44. doi:10.14309/ajg.0000000000001036
- Carlson JL, Erickson JM, Lloyd BB, Slavin JL. Health effects and sources of prebiotic dietary fiber. Curr Dev Nutr. 2018;2(3):nzy005. doi:10.1093/cdn/nzy005
- Mayo Clinic Staff. Dietary fiber: Essential for a healthy diet. Mayo Clinic. Accessed 2026-09-27. mayoclinic.org
About the Vita Globe Editorial Team
The Vita Globe Editorial Team researches and writes our wellness content, working from peer-reviewed research, systematic reviews and guidance from bodies such as the NIH and the FDA. We cite our sources inline and update articles when the evidence changes.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for medical advice. Talk to your healthcare provider before starting any new supplement, particularly if you are pregnant, nursing, taking medication, or caring for a child.
