Leaky Gut vs. IBS vs. SIBO: How to Tell Which One You Have
Why Your Gut Can Feel Worse When You Do “Everything Right”
You clean up your food, try low FODMAP, buy the fancy probiotics, and swallow a small army of supplements. Your gut still feels puffy and tight by the end of the day. You feel wiped out, especially when routines are looser with travel, BBQs, and late nights. It is frustrating and confusing.
What I see often in my practice in Eugene, is that “gut health” is not just one thing. Leaky gut, IBS, and SIBO can all show up with gas, bloat, and fatigue, but they are not the same pattern. When we throw one-size-fits-all plans at a gut that needs something more specific, symptoms can actually get louder, not quieter.
In my work, I use a Digestive Repair Protocol to sort through these patterns. I pair testing with food and lifestyle so we can make steady, realistic changes over time instead of chasing quick fixes. Let’s walk through how I think about leaky gut, IBS, and SIBO, how to spot common signs of each, and what a food-first plan can look like for them.
Understanding Leaky Gut, IBS, and SIBO Without Overwhelm
Here’s how I explain these three in simple language:
Leaky gut: The lining of the small intestine gets irritated and more “leaky” than it should be. Tiny gaps open, and bits of food and other particles slip through, which can fire up the immune system.
IBS: A symptom label, not one single disease. It usually means ongoing bowel changes like constipation, diarrhea, pain, or bloating, once other serious problems have been ruled out.
SIBO: Bacteria move into the small intestine where they do not belong in large numbers. They ferment your food too early, making gas and discomfort higher up in the gut.
These can overlap. Someone with an IBS label might actually have SIBO and also have a leaky and inflamed gut lining. This is why internet checklists feel messy. Three people can have “bloating and loose stools” and need three different plans.
In my practice, I have seen: one person whose main driver was stress and IBS-type motility issues, another whose long list of random food reactions pointed more to leaky gut, and another whose tight, upper abdomen bloat after meals was mostly SIBO. The lesson is simple: digestive repair is a long-term process, and clear education helps you make calmer, less restrictive choices.
How to Recognize a Leaky Gut Pattern
Leaky gut is not an official diagnosis, but higher intestinal permeability is something I see often. Signs that tell me this pattern may be playing a big role include:
Food sensitivities that seem to “spread” so more and more foods feel like a problem
Skin issues like eczema, acne, or rashes that flare with gut symptoms
Achy joints, brain fog, or feeling tired but wired, especially at night
Feeling extra sensitive to alcohol and sugar at social events
When someone searches “how to heal leaky gut naturally,” the internet often shouts about powders and extreme elimination diets. In my work, I start with food and lifestyle before supplements. I want to help the lining rebuild and calm down, not just yank out half the diet.
Food-first support for a leaky gut pattern can look like:
Prioritizing simple, whole foods: grilled fish or chicken, cooked vegetables, ripe fruits, olive oil, maybe some bone broth if tolerated
Choosing foods rich in key nutrients like zinc from meats and seeds, collagen from slow-cooked meats, and glutamine-rich options such as cabbage or well-cooked legumes if they sit well
Including cooked roots like carrots, beets, or sweet potatoes for gentle prebiotic fibers
Slowing down at meals, chewing well, and giving the nervous system a chance to relax so digestion can work properly
When I use my Digestive Repair Protocol, I may bring in testing to see whether barrier health is part of the bigger picture, then build a phased plan that fits real life.
When It Looks More Like IBS Than “Just” Leaky Gut
IBS is a label many people get when colonoscopies and scans look normal but symptoms keep going. Patterns that make me think “IBS-type” include:
Alternating constipation and diarrhea, or a strong lean toward one side
Bloating that clearly shifts with stress, travel, or changes in routine
Pain or cramping that is tied to bowel movements, either helped or triggered by them
I treat IBS as a starting question, not a final answer. What is driving these symptoms for this person? It might be:
Sluggish or too-fast motility
Food triggers or patterns
Low stomach acid or poor chewing
Microbiome imbalance or SIBO
With IBS, my food-first approach often starts with gentle structure instead of heavy restriction:
Simplifying meals for a bit so it is easier to “read” what the gut is saying
Building regular meal rhythms to calm the gut-brain axis
Adding fiber diversity slowly, often with cooked plants first, instead of jumping into a big fiber goal overnight
Pairing food work with nervous system support like breathing before meals or simple wind-down routines at night
I often see people with an IBS label who improve more from steady structure, nervous system work, and small testing-informed tweaks than from cutting more foods out. Tracking 3 to 5 days of food, stress, sleep, and symptoms can give a lot of insight into next steps.
Signs SIBO Might Be Driving Your Bloating
SIBO happens when bacteria overgrow in the small intestine. They ferment carbs too early, which creates gas where there is not much room for expansion. That can feel sharp, high, and very uncomfortable.
Common SIBO flags I watch for:
Bloating that shows up within an hour or so after eating and gets worse as the day goes on
Clothes that fit in the morning but feel tighter by evening
Strong reactions to garlic, onions, some fruits, or high-FODMAP foods like certain ice creams or large servings of watermelon
History of food poisoning, abdominal surgery, long-term use of acid blockers, or repeated antibiotic courses
A true SIBO diagnosis needs breath testing. This is often where I coordinate with a gastroenterologist so treatment and testing match up. While medical treatment is important here, food still matters.
Food-first support around SIBO can include:
Temporarily trimming back fermentable carbs to calm symptoms, without turning food into an enemy
Supporting digestion “upstream” with relaxed, seated meals, enough protein, and sometimes digestive support foods like ginger or lemon water if tolerated
Planning a careful rebuild phase after treatment so the microbiome is not left depleted, and to reduce the chance of relapse
I often see people whose bloating actually worsens on a very high-fiber, very “clean” diet until we uncover SIBO. When we shift to a phased plan that includes treatment, then microbiome repair, their body finally gets some relief.
Food-First Healing Plans for Each Pattern
Here’s how I think about pulling this together so you can see how real meals might shift for each pattern.
For a leaky gut focus, I often lean into:
Soothing, nutrient-dense foods like slow-cooked meats, well-cooked veggies, and simple fruits
Steady blood sugar with balanced protein, fat, and carbs at meals
Gentle broths or stews, if tolerated
Limiting alcohol and ultra-processed foods, without turning them into “never” foods
For an IBS focus, I pay close attention to:
Regular meal timing so the gut has rhythm
Hydration, especially when it is warm outside
Moderate fiber from mostly cooked plants and careful amounts of gas-forming foods
Simple nervous system practices before meals to tell the gut it is safe to digest
For a SIBO focus, the plan often includes:
More strategic carb choices, sometimes a lower-FODMAP pattern for a set period
Clear reintroduction steps so people do not stay stuck on a very restrictive diet
Support for motility and gut-brain communication as part of the rebuild
A simple, late-summer-friendly recipe that can work for most patterns is an Herb-Roasted Chicken and Zucchini Bowl:
Base: roasted chicken, zucchini, carrots, and rice or quinoa with olive oil, lemon, and fresh herbs
For leaky gut: cook the veggies very well, add extra olive oil, and cook the rice in diluted bone broth if that feels good
For IBS: keep seasonings simple, skip raw garlic and onion, and choose white rice if higher fiber is triggering
For SIBO: lean on lower-FODMAP veggies like zucchini and carrots, go light on onion or use the green tops only, and adjust the rice portion based on tolerance
Whatever pattern you see in yourself, any plan should flex over time. Testing, symptoms, and real-life needs all shape what is realistic and helpful. My Digestive Repair Protocol is built around that idea: no quick fix, just clear steps and steady support so you can move toward calmer, more confident digestion.
Take The First Step Toward A Calmer, Healthier Gut Today
If you are ready to stop guessing and start truly supporting your digestion, we invite you to explore our personalized approach to How to heal leaky gut naturally. At Nicole Joyce Health Counseling, we look at your whole health picture so you can finally understand what your body needs to feel better. If you have questions or want to see if we are the right fit, you can contact us to schedule a time to talk.