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All disease begins in the gut
― Hippocrates
Modern science is finally catching up with what ancient physicians understood. The gut isn’t just where we digest our food, it’s at the very center of our health. For kids with PANS/PANDAS, healing the gut can be the turning point in their healing journey. When the microbiome is imbalanced, the immune system can overreact. If we have a damaged gut lining it will allow neurotoxins, pathogens, and inflammatory messages to slip into the bloodstream, aggravating symptoms like OCD, anxiety, mood swings, and rage.
But, this is also where healing can begin. The gut is incredibly adaptable and regenerative. And, that’s where herbal medicine comes in. Herbs for gut health can decrease inflammation, balance the microbiome, repair the gut lining, and support motility without harsh side effects.
This guide walks through the cornerstones of functional gut healing for children dealing with chronic immune dysfunction, neuroinflammation, and microbiome imbalance. You’ll learn how to:
- Use food as medicine
- Balance the Microbiome
- Restore tight junctions and mucosal integrity
- Repopulate beneficial flora
- Promote regularity and waste elimination
- Support nutrient absorption and cellular repair
Let’s start by turning to the most foundational tool we have: the food on our children’s plates.
Disclaimer: I’m not a doctor and this is not medical advice. This information is about my own personal experience and is meant for educational purposes only and is not intended to diagnose, treat, or replace medical care. Always consult with your healthcare provider before starting any new supplement, protocol, or treatment.
Using Food as Medicine
The foods we eat have the power to either nourish and heal our body, or damage and disrupt. Healing begins on the plate.
That idea, passed down since Hippocrates, couldn’t be more true for our kids. Particularly for children with PANS and PANDAS, chronic inflammation, or neuroimmune disorders. When the gut is leaky or permeable, the immune system is hyperactive. Restoring balance in our gut begins with using food as a medicine.
Even if your child has a limited diet, adding in just a few healing foods can begin to shift the terrain. Try to slowly swap out foods and pull back on some of the more inflammatory ones.
Here are some food categories that offer gut-healing benefits:
Eat Anti-Inflammatory Foods | Nourish + Protect
Reduce systemic and gut inflammation by including:
Berries (especially blueberries and cherries): Packed with antioxidants like anthocyanins and polyphenols.
Leafy greens and orange vegetables: Rich in beta-carotene and other antioxidants that support immune regulation.
Omega-3-rich foods: Wild salmon, walnuts, chia seeds, and flaxseeds help lower inflammation throughout the body.
Colorful fruits and vegetables: Eat the Rainbow! Diversity on the plate supports diversity in the microbiome.
Healthy Fats
Fats are essential for calming inflammation, absorbing fat-soluble vitamins (like A, D, and K), and supporting bile flow. Bile flow is a necessary ingredient for detox and gut lining repair.
Avocado
Olive oil
Grass-fed butter or ghee
Coconut oil
Fatty fish (like salmon, sardines, or mackerel)
✨ When detoxing mold or mycotoxins, healthy fats are even more important. Dr. Crista emphasizes: “The solution to pollution is dilution.” Healthy fats help dilute fat-soluble mycotoxins and support their safe removal through bile.
Inflammatory Foods | Remove the Triggers
Just as food can heal our body, it can do harm. Certain ingredients drive gut inflammation, damage the microbiome, and impair digestion. Removing these inflammatory triggers from the diet helps calm the inflammation driving the symptoms and creates space for healing.
But here’s the reality: many kids with PANS/PANDAS also have ARFID or extreme food aversions (one of mine included). For those kids, their diet might already be down to a very short list of “safe foods,” and the idea of removing more is not a good idea.
So do what you can, when you can.
As you are able to, add more of the good and reduce the burden of the bad over time. Even small changes can support the healing process. This is a marathon, not a sprint, and we have to be flexible. These are just some guidelines to work towards.
Top Gut Irritants to Eliminate:
Processed Foods: High in additives, emulsifiers, and artificial colors that disrupt the microbiome and immune balance
Refined Sugar and Carbohydrates: These feed harmful bacteria and yeast (like Candida), driving dysbiosis
Industrial Seed Oils: Corn, soybean, canola, and vegetable oils are high in omega-6 fats that promote inflammation
Gluten: Increases gut permeability (zonulin activation) even in non-celiac individuals, especially important in autoimmunity
Dairy: Can trigger inflammation in children sensitive to lactose or casein; consider removing temporarily and reintroducing slowly
If your child is in a stage where they have a limited diet, start by focusing on what you can add rather than what you take away. Can you swap seed oils for butter or ghee? Can you add a handful of blueberries or blend in a spoonful of gut-healing veggie powder to applesauce? That’s a win.
Over time, as your child gets better, it may become easier to expand the diet and fine-tune triggers.
Fiber | Feed the Flora, Sweep the Gut
Fiber feeds the beneficial bacteria that keep pathogens at bay and supports regularity by bulking up stool and sweeping waste out of the colon.
Sources of Gut-Friendly Fiber:
Legumes: Lentils, chickpeas, and black beans
Fruits & Vegetables: Apples, artichokes, leafy greens, carrots, bananas
Seeds: Chia, flax, and psyllium (also bind toxins). You can buy chia and flax seeds ground and then add to favorite foods.
Whole Grains (gluten-free if sensitive): Oats, millet, quinoa
Fiber fermentation also produces short-chain fatty acids (SCFAs) like butyrate, which is a primary energy source for gut cells and helps repair the intestinal lining.
Probiotic Foods | Replenish Beneficial Bacteria
For kids with PANS/PANDAS, anxiety, or chronic inflammation, rebuilding the microbiome is important. Probiotic-rich foods replenish beneficial bacteria, promoting gut balance and resilience.
- Yogurt: Choose unsweetened varieties with live cultures.
- Fermented Vegetables: Sauerkraut, kimchi, and pickles (unpasteurized).
Tip: If your child won’t eat fermented foods (all of mine will not), you can stir a small spoonful of fermented brine (from sauerkraut or pickles) into salad dressing (ranch) or even hide a bit in ketchup or applesauce
Prebiotic Foods | Fuel for Flora
Prebiotics are types of fiber that the human body can’t digest, but your good bacteria can. When the beneficial bacteria ferment these fibers, they produce short-chain fatty acids (like butyrate), which helps to repair the gut lining and reduce inflammation.
Garlic, onions, and leeks: Rich in inulin and FOS (fructooligosaccharides)
Bananas (especially slightly green ones): Source of resistant starch
Asparagus, artichokes, and chicory root: High in inulin (Highlighted in the Feingold diet)
Oats and apples: Contain pectins that feed Bifidobacteria
Ground flax and chia seeds: Provide fiber + omega-3s
If your child is sensitive to FODMAPs or has SIBO, go slow with prebiotic foods or work with a practitioner. Even small amounts count.
Tip: For a sneaky way to get vegetables in your kids’ diets, try Dr. Cowan’s Garden with powdered vegetables including leeks, dandelion root powder, low oxalate greens, beets and more, to slowly add to their favorite meals, like spaghetti sauce, tacos, muffins, and pancakes. Kids won’t taste it, but their microbes will!
Digestive Enzymes from Food
Enzymes help break down proteins, fats, and carbs so your child can actually absorb the nutrients from the food they eat. Many kids with PANS/PANDAS or chronic inflammation have low enzyme output, which can lead to bloating and nutrient deficiencies.
Enzyme-Rich Foods:
Pineapple (bromelain)
Papaya (papain)
Raw honey (amylase, protease)(easily swapped for sugar)
Apple cider vinegar (stimulates digestive secretions)
Ginger & bitter greens (activate bile + enzymes)
These foods support digestion gently. Digestive enzyme supplements may be appropriate in some cases but should be used temporarily, not long term.
The gut microbiome is a diverse ecosystem, home to trillions of microbes that impact digestion, immunity, inflammation, and mood. In kids with PANS/PANDAS, the balance of good and bad bacteria is often off balance from antibiotic use, mold or toxin exposure, infections, or a diet that’s been limited by ARFID or food aversions. When this balance is disrupted, it creates the perfect storm for immune dysfunction, gut permeability (leaky gut), and neurological symptoms.
Healing the microbiome takes a two-part approach:
1. Reduce what doesn’t belong (harmful microbes, yeast, overgrowths)
2. Encourage what does belong (beneficial bacteria, microbial diversity, balance)
Natural antimicrobials offer a gentle, targeted way to reduce harmful microbial overgrowth without the collateral damage often caused by pharmaceuticals. Unlike antibiotics, many herbs for gut health are selective, meaning they can suppress pathogens while preserving or supporting beneficial flora.
Top Antimicrobial Herbs for Gut Health
- Berberine – From plants like Goldenseal and Oregon grape. It disrupts bacterial membranes, reduces inflammation, and may support blood sugar regulation too.
Olive Leaf – Antiviral and antifungal. Good for systemic overgrowth and immune modulation.
Caprylic Acid – Derived from coconut. Targets yeast and Candida in the gut.
Cat’s Claw – Antibacterial and anti-inflammatory; supportive for gut pathogens and co-infections.
Black Walnut & Wormwood – Most potent antiparasitic; often used in short-term protocols if parasitic infections are suspected.
Oregano Oil – Antibacterial, antifungal, antiviral. Helpful for Candida and gut dysbiosis. (nicknamed “the gut bomb; it’s not a first-line option, use caution and always pair with gut support.)
I like to use the stronger antimicrobials in a pulsed manner, and pair them with binders if mold, yeast, or die-off symptoms are a problem.
Probiotics
Once you’ve begun to reduce the microbial “clutter,” the next step is to nourish the good guys. Probiotics help!
Types of Probiotics:
Strain-Specific
Different strains target different issues. For example:
- Lactobacillus rhamnosus GG – gut barrier support
- Bifidobacterium longum – calms inflammation + anxiety
- Lactobacillus plantarum – anti-inflammatory + butyrate production
- Saccharomyces boulardii – yeast-based probiotic that binds mycotoxins and is excellent post-antibiotics
Spore-Based Probiotics
These are resilient strains with a natural protective shell, so they survive stomach acid and arrive alive in the colon.
- Bacillus subtilis
- Bacillus clausii
- Bacillus coagulans
Spore-based probiotics are often well-tolerated by PANS/PANDAS kids and are available in gummies or capsules (Just Thrive, MegaSporeBiotic)
These are the brands I use with my kids:
- MegaSporeBiotic Gummies for Kids.
- Klaire Labs. Ther-Biotic, Saccharomyces boulardii. Small capsules. ARFID Friendly.
- Klaire Labs, Ther-Biotic, Chewable Tablets for Kids. (my two kids without ARFID like these)
- Neuralli MP. Psychobiotic.
The integrity of the gut lining is one of the most foundational elements of healing. In kids with PANS/PANDAS, chronic inflammation, infections, food sensitivities, and even emotional stress can compromise the gut lining. When that happens, tight junctions between intestinal cells loosen, allowing toxins, pathogens, and undigested food particles to leak into the bloodstream. This is commonly referred to as “leaky gut”, and it fuels systemic inflammation, immune dysregulation, and flares. Healing leaky gut starts with our tight junctions.
Tight Junction Support
Butyrate
A short-chain fatty acid (SCFA) produced by the fermentation of prebiotic fibers in the colon. It’s the #1 fuel source for colonocytes (the cells lining your gut), and it directly helps tighten loose junctions.
Food sources: Grass-fed butter, ghee
Precursor foods: Oats, bananas, legumes, resistant starches
Supplement forms: Sodium butyrate (smell warning: they’re not pleasant, but worth it)
Zinc (especially Zinc Carnosine)
Zinc is essential for gut barrier maintenance and helps regulate cytokines that break down tight junction proteins. Zinc carnosine, in particular, has been shown to adhere to the gut lining and support its repair.
Food sources: Oysters, pumpkin seeds, red meat, chickpeas
Supplement: Zinc carnosine is better targeted for GI healing than standard zinc
Glycine
Glycine is an amino acid that supports collagen formation and is a building block of the gut lining. It also reduces inflammation and has a calming, inhibitory effect on the nervous system.
Food sources: Bone broth, collagen-rich meats, fish skin
Supplement: Often paired with magnesium or in powder form (sweet-tasting and mixes easily into applesauce)
Mucosal Healing & Tissue Repair (Healing Leaky Gut)
The next step is to rebuild and regenerate the mucosal lining. The mucosal lining is a delicate but a powerful barrier that keeps the gut wall protected from damage. It’s our bodies first line of defense against toxins, pathogens, and allergens. These are the top nutraceuticals and herbs for gut health to heal the mucosa.
L-Glutamine
This amino acid is the primary fuel for enterocytes (gut lining cells). It plays a n important role in rebuilding the mucosa, improving nutrient absorption, and calming inflammation. Typically comes in powder form. Start low and increase gradually. Can be mixed with water or smoothies.
Aloe Vera (Inner Leaf)
Aloe soothes irritation, reduces acidity, and helps form a protective film along the intestinal lining. It also has gentle antimicrobial and liver-supportive properties. (short-term use only)
Slippery Elm or Licorice Root
Both herbs coat and soothe the mucosal lining, reduce inflammation, and support tissue regeneration. They also increase natural mucus production, protecting the gut from further irritation.
Colostrum
Often called “liquid gold,” colostrum contains immunoglobulins, growth factors, and peptides that directly stimulate healing of the intestinal lining and rebalance immune function.
Peptides (Advanced Option)
Peptides like BPC-157 and Thymosin Beta-4 (TB4) are signaling molecules that promote rapid tissue regeneration, reduce inflammation, and protect the gut barrier. These are typically used under the supervision of a practitioner.
BPC-157: Supports healing of the gut lining, especially in leaky gut, mold illness, or post-antibiotic recovery
TB4: Calms inflammation and supports healing of damaged tissues
Gut healing can’t happen if things aren’t moving.
Your digestive tract isn’t just about digestion, it’s your primary highway for eliminating waste, toxins, excess hormones, and inflammatory byproducts. If stool isn’t moving out, toxins gets reabsorbed. That means your child could be detoxing beautifully, eating all the right foods, but if they’re constipated, you’re just rerouting the toxins back into circulation.
Daily bowel movements (1–2 per day) are non-negotiable. And for PANS/PANDAS kids, motility is often impaired, from inflammation, dysbiosis, vagus nerve dysfunction, or mold exposure. Sometimes it’s a nervous system issue. Sometimes it’s microbial. Often, it’s both.
Why Motility Slows Down
Neuroinflammation: Can affect vagus nerve signaling (which governs gut movement)
Low stomach acid or bile flow: Slows digestion at the top of the chain
Dysbiosis or SIBO: Can interfere with peristalsis and slow down clearance
Dehydration or mineral deficiencies: Make stool harder and more difficult to pass
Stress: Puts the nervous system in sympathetic (fight/flight) mode, halting motility
Ways to Support Motility (and Keep Things Moving)
1. Herbs & Prokinetics
Gentle herbs can stimulate the enteric nervous system and encourage proper movement of food and waste.
Ginger – Stimulates digestion and relaxes the GI tract. Ginger pulls double duty and is also an antiviral!
Iberogast – A blend of 9 herbs (including peppermint, chamomile, caraway) that supports motility and reduces bloating. A favorite for SIBO or slow-transit constipation. (Highlighted by Dr. Nathan in his book, Toxic)
Peppermint oil – Has antispasmodic and motility-promoting effects (especially in enteric-coated capsules to reach the small intestine)
2. Hydration + Electrolytes
Hydration is foundational. Without adequate water, the colon pulls more from the stool, making it dry, hard, and slow.
Goal: Half your child’s body weight (in lbs) in ounces of water daily
Bonus: Add a pinch of mineral-rich sea salt or trace mineral drops to help water hydrate at the cellular level
Coconut water, electrolytes (like LMNT, BEAM or Seeking Health), and bone broth are helpful for sensitive kids
3. Fiber (But Choose Wisely)
Fiber helps bulk and move stool through the colon—but not all fiber is tolerated equally.
Soluble fiber (oats, flaxseed, chia, psyllium) absorbs water and forms a gel-like consistency to ease passage
Insoluble fiber (leafy greens, veggies, bran) adds bulk and speeds up transit
Caution: If dysbiosis or SIBO is present, some fibers (especially FODMAPs) can make things worse. Start slowly and track symptoms.
4. Movement & Body Positioning
Physical activity is key, even just walking, bouncing on a trampoline, or stretching supports peristalsis
Rebounding is an easy way to stimulate lymph AND gently encourage intestinal movement
Toilet posture matters: A squatty potty or footstool to raise knees above hips can make elimination easier (this was a game changer for us)
When You Need a Gentle Push
Herbal laxatives or bulk-forming agents can be helpful tools, but only used short term and mindfully.
Bulk-Forming Laxatives (Gentler)
Psyllium husk – Adds bulk and softens stool
Ground flaxseed – Nourishes beneficial flora while gently promoting regularity
Fenugreek – High in fiber and mucilage; soothes and moves
Stimulating Laxatives (Short-Term Use Only)
These work by triggering muscle contractions in the intestines. Use cautiously and never daily.
Senna – Powerful but can be irritating with frequent use
Cascara sagrada – Supports peristalsis, but also needs breaks between use
Aloe vera (inner leaf only) – Soothes and hydrates while gently encouraging motility (this comes in liquid form and can be added to juice)
You can be eating the most nutrient-dense diet in the world, but if you aren’t absorbing the nutrients properly, your body is still running on empty.
Many people dealing with conditions like PANS/PANDAS, mold exposure, or chronic inflammation aren’t absorbing nutrients. This often stems from damage in the small intestine, low stomach acid, sluggish bile flow, or enzyme deficiencies. This can show up as fatigue, irritability, developmental delays, vitamin and mineral deficiencies, and cognitive or behavioral symptoms.
Healing the gut is about restoring optimal digestion and nutrient uptake. This ensures your body can actually use the nutrients it’s being given.
Step 1: Support Digestive Enzymes & Stomach Acid
Digestive enzymes are proteins that help break down fats, proteins, and carbohydrates into smaller more absorbable pieces. When enzyme levels are low, food is only partially digested which often leads to fermentation, bloating, dysbiosis, and poor absorption.
When to suspect low enzymes:
Bloating after meals
Floating or greasy stools
Undigested food in stool
Fatigue after eating
Supportive Interventions:
Bitter Herbs: Bitters like dandelion, gentian, or artichoke stimulate digestive secretions. Just a few drops before meals can jumpstart enzyme flow.
Digestive Enzyme Supplements: Use a broad-spectrum enzyme with protease, lipase, amylase, and lactase (if dairy is still in the diet). These may be helpful during periods of inflammation or after antibiotics.
Apple Cider Vinegar: 1 tsp in a bit of water before meals can stimulate acid and enzyme production. Great for those with low stomach acid.
Note: Enzymes are best used short-term while you rebuild the terrain.
Step 2: Restore Stomach Acid (HCI)
Contrary to popular belief stomach acid is actually beneficial. Without enough hydrochloric acid (HCl), proteins aren’t properly broken down, minerals aren’t fully absorbed, and harmful pathogens can survive the stomach environment and reach the gut.
Low stomach acid is common in children with PANS/PANDAS, especially those exposed to mold or on long-term PPIs.
How to Support
Apple Cider Vinegar before meals (splash or gummies)
Digestive bitters to stimulate acid production
Signs of low acid include:
Feeling full for hours after meals
Gas, bloating, or belching
Undigested food in stool
Step 3: Support Bile Flow
Bile is responsible for breaking down fats and absorbing fat-soluble vitamins (A, D, E, and K). It’s also a major detox pathway, carrying out toxins and waste through the stool.
Many people with PANS/PANDAS, autoimmune conditions, or those exposed to mold, have sluggish bile due to liver overload or gallbladder dysfunction.
Bitter herbs for gut health like dandelion, gentian, artichoke
Choline and inositol (nutrients found in eggs, liver, or taken as supplements)
Castor oil packs over the liver area
Ox bile supplements (not a first line of defense)
Step 4: Enhance Cellular Uptake
Even if nutrients reach the bloodstream, they still need to get inside the cells.
This is where humic and fulvic acids can come in. These ancient mineral-rich compounds bind to nutrients in the digestive tract and helping to transport them across cellular membranes and into where they’re needed.
Benefits of Humic & Fulvic Acid
Improve cellular permeability and uptake of magnesium, zinc, calcium, etc.
Help transport trace minerals into tissues
Support hydration, energy production, and detox
Healing the Gut is a Process
Here’s what to keep in mind:
Food is foundational, but healing the gut doesn’t require perfection. Add more healing foods when you can, remove some of the inflammatory ones when possible.
Balance the microbiome by gently reducing harmful bacteria while encouraging the good ones to thrive.
Repair the gut lining with nutrients like butyrate, glycine, and glutamine to restore the barrier and reduce inflammation.
Keep things moving—regular bowel movements are essential to remove waste and avoid recirculation of toxins.
Improve absorption, so the nutrients you work so hard to provide actually get used by the body.
To learn more about gut health as a root cause of autoimmunity read the Gut Health page on the Root Causes & Triggers page.
