Is Food Really Causing Your Child’s Rashes?

Why It’s Typically Not About the Food

If your child has mysterious rashes or hives, it’s natural to look straight at what they’re eating. Parents often say, “It must be dairy,” “Maybe it’s gluten,” or “Was it the strawberries?” It feels logical: food goes in, rash shows up, so the food must be the problem. Believe me, I have been there!

But for most kids with ongoing rashes and hives, food is not the true root cause. Food is more like a visitor walking through a neighborhood. If the neighborhood is calm and well-kept, that visitor can pass through without drama. If the neighborhood is already chaotic, one extra visitor might spark trouble—but the real issue is the state of the neighborhood, not the visitor itself.

In your child’s body, that “neighborhood” is the gut and immune system. When that environment is imbalanced and inflamed, everyday foods get blamed for symptoms that actually began long before the meal.

The Immune System’s Headquarters Lives in the Gut

We often think of the immune system as something floating around in the blood, but a huge portion of it actually lives in and around the gut. The lining of the intestines is surrounded by immune tissue and immune cells that are constantly sampling what comes through—food, microbes, and other particles—and deciding what is safe and what might be dangerous.

Scientists estimate that most immune cells reside in gut-associated lymphoid tissue, where they are in close contact with the trillions of microbes that live in the digestive tract. This means the gut is not just a “tube” for digestion; it is a training ground where the immune system learns what to tolerate and what to react to.

When this training environment is healthy, kids are generally more tolerant of a wide variety of foods and less prone to chronic inflammatory symptoms like eczema, rashes, and hives. A large study following over 1,000 kids found that when a baby’s gut bacteria weren’t developing well by age 1, they were more likely to have allergies by age 5.

Meet the “Neighborhood”: The Gut Microbiome

Think of your child’s gut like a bustling city full of “microbe neighbors.” There are friendly, hard-working microbes that help keep things running smoothly, neutral ones just passing through, and troublemakers that can stir up problems if they get too numerous.

In a healthy gut “city,” the friendly microbes are plentiful. They help digest food, produce beneficial compounds, and send calming signals to the immune system. They also help crowd out more harmful microbes. When this city is well-balanced, the immune system is less likely to overreact to normal daily exposures, including food.

When the balance shifts—if beneficial microbes are low and opportunistic or pathogenic microbes overgrow—the city becomes more chaotic. This imbalance, called dysbiosis, can alter how the immune system behaves and set the stage for inflammation that may show up on the skin.

The Gut Barrier: Your Child’s “Security Fence”

The gut lining acts like a highly selective fence or security gate. It’s designed to let in nutrients and beneficial compounds while keeping out larger, unwanted particles and microbes. Picture a gated community where the security team checks IDs before letting anyone in.

When the gut barrier is strong, only the right things pass through into the bloodstream. The immune system behind that fence sees mostly what it expects to see and stays relatively calm.

But if that fence becomes damaged or “leaky”—due to infections, chronic inflammation, dysbiosis, or other stressors—more unfiltered material gets through. Larger fragments of food, bacterial products, and toxins can slip past the gate and come into contact with immune cells that were never meant to see them.

At that point, the immune system can go on high alert. That heightened reactivity doesn’t stay confined to the gut; it can show up as inflammation in other parts of the body, including the skin. So when your child eats a perfectly normal food while their gut barrier is compromised, that food can appear to “trigger” a rash, even though the underlying problem is the leaky, inflamed fence—not the food itself.

The Gut–Immune–Skin Axis: How the Gut Talks to the Skin

Researchers now describe a “gut–skin axis”—a communication highway between the microbes and immune cells in the gut and the cells and immune activity in the skin.

When the microbiome is healthy, beneficial bacteria produce compounds (such as short-chain fatty acids) that help reinforce the gut barrier and support regulatory immune cells—the peacekeepers that prevent overreactions. This helps promote tolerance so the body is less likely to see everyday foods and environmental exposures as threats.

When the microbiome is imbalanced and the barrier is compromised, those calming signals drop, and more inflammatory signals circulate. Over time, that can contribute to conditions like eczema, rashes, and even chronic hives. In many children, changes in the gut environment can be present well before obvious skin symptoms appear.

When Food Really Is the Culprit

To be clear, there are times when specific foods truly are the problem. This is especially true in classic IgE-mediated food allergies. In this situation, the immune system has created specific IgE antibodies against a food protein—like peanuts, milk, or egg.

When the child eats that food, the immune system immediately recognizes it and releases histamine and other chemicals, triggering rapid symptoms such as hives, swelling, vomiting, or breathing difficulties. These reactions are usually obvious and reproducible: the same food causes a similar reaction every time, often within minutes to two hours.

These are serious reactions that require medical evaluation and guidance from an allergist. In these cases, strict avoidance of the culprit food is appropriate and essential for safety. But this is not what’s happening in the majority of kids with ongoing, non-specific rashes or chronic hives. In fact, a major JAMA review on chronic spontaneous hives found that true IgE food allergy was identified in only about 1.5% of patients. Leading international urticaria guidelines likewise state that food allergy is an extremely rare cause of chronic hives, and allergy society guidelines echo this conclusion.

Chronic Hives: Why Food Is Rarely the Main Driver

Many parents assume that daily or long-standing hives must be due to something in the diet. However, clinical guidelines emphasize that chronic hives (lasting more than six weeks) are rarely caused by food. Broad elimination diets often do little to change the pattern of hives in these kids.

Instead, chronic urticaria is frequently linked to internal immune dysregulation, infections, medications, physical triggers (like pressure or temperature changes), or is classified as chronic spontaneous urticaria when no clear external trigger is found.

This doesn’t mean food is irrelevant, but it does mean that food is often not the root cause. If the immune system is already on edge due to gut dysbiosis, infections, or other internal factors, a meal may appear to “set off” hives simply because the system was primed and ready to flare.

Why Food Gets Blamed: The Spark vs. the Kindling

Let’s use another metaphor: imagine a campfire. The kindling and logs are the fuel; the match is just the spark. If there’s no fuel, the match does nothing. If there’s a big pile of dry logs, one small spark can start a blaze.

In this context:

The “kindling and logs” are the child’s internal environment: gut microbiome balance, gut barrier integrity, and underlying immune regulation.
The “match” is the food or exposure present at the time symptoms appear.

If the internal environment is calm and well-regulated, an occasional spark (like a common food or exposure) doesn’t lead to ongoing fire. If the environment is already dry and loaded with fuel—because of dysbiosis, a leaky gut barrier, or ongoing inflammation—almost any spark can seem like the culprit.

This is why I hear parents say “every time my child eats X, their rash seems worse,” even though that same food might be tolerated in a healthier gut environment. The food is easier to see and control than the invisible gut–immune network, so it gets blamed—but it isn’t always the true problem.

When You Should Still Investigate Food

Even though food is often not the primary driver of chronic rashes or hives, there are clear situations when a focused food evaluation is important:

Reactions are immediate and repeatable with the same food (for example, hives, swelling, or vomiting within minutes to two hours of eating it).
Symptoms include breathing difficulty, throat tightness, severe swelling, or other signs of anaphylaxis (always an emergency).
Your child has a known history of allergies and develops new, consistent reactions tied to specific foods.

In these cases, working with an allergist to identify or rule out true food allergy is essential. This allows you to make targeted, medically guided changes rather than broad, stressful food elimination.

Shifting the Focus: From Restriction to Environment

Many families’ first instinct with skin symptoms is to cut more and more foods from their child’s diet. Over time, this can become exhausting, stressful, and even nutritionally limiting—especially for kids who are still growing. I see this all the time in my practice. Yet what these children truly need for skin repair is more nourishment, not less—especially plenty of protein and antioxidant-rich foods to give their skin the building blocks it needs to heal.

There’s also strong evidence that constantly removing and avoiding foods can actually backfire, increasing the risk of IgE‑mediated food allergies in kids. This seems to happen in two main ways: when children miss the critical early window to build oral tolerance to foods, and when unnecessary long‑term restriction causes them to lose tolerance they once had.

If an allergy workup has not identified clear food allergies, or if hives and rashes continue despite multiple diet changes, it may be more helpful to shift attention away from “What food should we remove next?” and toward “What is going on in my child’s gut and immune environment?”

In my practice, that might include:

Supporting a healthy, diverse overall diet rather than focusing only on restriction
Looking at gut health, microbial balance, and possible infections or overgrowths
Considering factors that impact the gut barrier
Addressing broader drivers of inflammation, not just what shows up on the plate

The goal is to create a calmer, more resilient internal environment so your child’s immune system is less reactive in general. Then, everyday foods are more likely to be tolerated instead of blamed.

A New Way to Talk About Your Child’s Rashes

When you talk to your child—or to yourself—about their skin symptoms, you might reframe the story like this:

“Your body isn’t broken; it’s just sending us messages that something inside needs support.”
“Instead of blaming the food, we’re going to look at the ‘neighborhood’ in your belly and help calm things down.”
“We want your gut and immune system to feel safe and steady so your skin can show that calm on the outside.”

This shift—from fear and restriction toward curiosity and root-cause support—can be deeply relieving for both caregivers and kids. Instead of waging war on your entire pantry, schedule a 30‑minute discovery call with me, The Derma Dietitian®, so we can map out the next steps in your child’s healing journey and address the gut–immune–skin connection that so often drives those stubborn rashes and hives.

References

https://pubmed.ncbi.nlm.nih.gov/23845860/

https://pubmed.ncbi.nlm.nih.gov/37747742/

https://pubmed.ncbi.nlm.nih.gov/42083785/

https://pubmed.ncbi.nlm.nih.gov/39078229

https://pubmed.ncbi.nlm.nih.gov/37644001

https://jamanetwork.com/journals/jama/article-abstract/2824115?utm_source=openevidence&utm_medium=referral

https://onlinelibrary.wiley.com/doi/10.1111/all.13397

The Supplement I Never Expected to Love (But Can’t Stop Talking About)

Spotlight on ThaenaBiotic®

There are supplements I recommend because the research is solid. And then there are supplements I recommend because I’ve felt the difference myself — and then dug into the research. Thaena falls squarely in the second category.

If you’ve been following along, you know gut health is at the center of almost everything I do — from stubborn skin flares to mood swings, energy crashes, and yes, the less glamorous stuff, like what’s (or isn’t) happening in the bathroom. So when I started noticing real changes in my own bowel regularity after adding ThaenaBiotic® to my routine, I had to share it with you.

So… What Even Is ThaenaBiotic®?

ThaenaBiotic® is the world’s first human-derived postbiotic supplement — and before you scroll away, let me explain why that’s actually brilliant.

You’ve probably heard of probiotics (live bacteria) and prebiotics (the fiber that feeds them). Postbiotics are the third piece of that puzzle: the actual metabolites — the tiny molecules — that healthy gut bacteria produce. Think of it this way:

Prebiotics are the fertilizer. Probiotics are the seeds. Postbiotics are the ready-to-harvest nutrients your gut cells immediately recognize and use.

ThaenaBiotic® is made from carefully screened, extraordinarily healthy human donors. Their stool is collected, rigorously sterilized using high-heat autoclaving (which kills all bacteria, fungi, and viruses), then freeze-dried and encapsulated. What remains is a complex, bioactive treasure chest of over 14,000 distinct metabolites that your gut knows exactly how to use.

No live bacteria. No refrigeration required. No colonization concerns.

Why I Started Using It (Hint: Constipation)

Constipation is one of those symptoms that sounds minor but is actually a significant sign that your gut ecosystem is struggling. I tried Thaena because I wanted to see firsthand what all the buzz was about — and the results genuinely surprised me.

Here’s the science behind why it helps with motility and regularity:

ThaenaBiotic® is rich in short-chain fatty acids (SCFAs) like butyrate, which directly fuel colon cells, support gut barrier integrity, and help regulate the muscular contractions that move stool through your digestive tract. It also contains secondary bile acids (like lithocholic acid) that bind to receptors enhancing gut motility — and indoles, tryptophan-derived compounds that help modulate gut inflammation and support smooth digestive signaling.

In short: it restores the molecular signals your gut needs to remember how to move.

Real users echo this experience. One ThaenaBiotic® user shared: “I’m experiencing an improvement not only with bowel movements, but also with gut tolerance. I have started to carefully and slowly include raw vegetables in the form of salad and very slowly introducing raw apple. Both of which I am tolerating.”

The Bonus Benefits: Sleep & Mood

Here’s where it gets really interesting from a gut–brain axis perspective.

When your gut microbiome is depleted or out of balance, your body loses access to key signaling compounds that regulate far more than digestion — including energy metabolism, stress resilience, and mood. The gut–brain axis is a constant, two-way communication highway between your enteric nervous system (your “second brain” in your GI tract) and your central nervous system.

Several of the metabolites in ThaenaBiotic® are directly implicated in this crosstalk:

Indole-3-propionic acid (IPA) and related indoles can activate receptors that calm inflammation, protect nerve cells, and support balanced immune and emotional responses
Butyrate and propionate (SCFAs) have been shown in emerging research to interact with cells involved in mood regulation and stress responses
Urolithin A (a polyphenol-derived metabolite) supports mitochondrial function via mitophagy — essentially cellular “spring cleaning” — which can influence both energy and cognitive clarity
Inosine (a nucleotide derivative) gently modulates immune responses and supports tissue repair and energy metabolism

Many users report noticing changes in how “foggy” or energized they feel as gut balance improves — and individual responses will vary, but the biological rationale is sound.

Who This Is For

ThaenaBiotic® isn’t just for people with constipation. It may be a fit if:

You’ve tried probiotics and still don’t feel right. Most probiotics add a few lab-grown strains to a gut with trillions of microbes — their effects are often temporary. ThaenaBiotic® delivers what the gut actually uses: the postbiotic signals that tell your body how to regulate itself.
You’re recovering from antibiotics, illness, or burnout. When a course of antibiotics or a prolonged illness depletes your microbiome, you lose access to key compounds that regulate digestion, energy, and mood. ThaenaBiotic® replenishes those signals safely, without live bacteria.
Your diet is limited by food sensitivities. If you can’t tolerate certain foods, your microbes can’t make the nutrients those foods would normally create. Because Thaena’s donors eat a full spectrum of healthy foods, you get that full-spectrum postbiotic output even while your own diet is restricted.
You’re a high-optimizer looking for the missing piece. You track sleep, recovery, and every other metric — but your gut ecosystem may be the one system you haven’t fully optimized yet.

How to Take It

Simple dosing is part of ThaenaBiotic®: Take 1 capsule with or without food, morning or evening. No refrigeration needed.

The Risk-Free Part

They offer a 30-day money-back guarantee on a one-month supply — meaning you can test this for a full month and request a full refund if you don’t notice a difference. For a product this unique, that kind of confidence matters.

My Take

As someone who works with clients on chronic skin and gut issues daily, I’m always looking for tools that address root-cause biology rather than just masking symptoms. The gut–skin–brain connection is real, and the postbiotic research emerging around metabolites like butyrate, indoles, and bile acid derivatives aligns with what I see clinically.

This isn’t a probiotic you take and forget. It’s a signal restoration tool — and it’s one I’m genuinely using and recommending right now.

Ready to Try It?

You can order ThaenaBiotic® through my practitioner portal. Please note that I earn affiliate commissions, which help support my work and research into the topicals and supplements I recommend.

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. Always consult your healthcare provider before starting a new supplement.

Resistant Starch for Gut and Skin Health

Unlock Gut & Skin Health: Why F. prausnitzii is Your New Best Friend (and How to Feed It!)

We’re diving deep into the fascinating world of your gut microbiome again, and this time, we’re shining the spotlight on a true superstar: Faecalibacterium prausnitzii (F. prausnitzii). This little microbe might have a name that’s hard to pronounce, but it plays a HUGE role in keeping your gut happy and your skin glowing. Think of it as the ultimate gut gardener, cultivating a healthy and balanced inner ecosystem.

Why is F. prausnitzii So Important for Gut Health?

F. prausnitzii is one of the most abundant and important bacteria in a healthy human gut. It’s a master at producing butyrate, a short-chain fatty acid (SCFA) that’s like a magic elixir for your gut lining. Here’s why butyrate, and therefore F. prausnitzii, is so crucial:

Fuel for Your Gut Cells: Butyrate is the primary energy source for the cells lining your colon (colonocytes), keeping them healthy and functioning optimally.

Anti-inflammatory Champion: Butyrate has potent anti-inflammatory properties. It helps to calm inflammation in the gut by inhibiting pro-inflammatory pathways (like NF-kB) and promoting the production of anti-inflammatory molecules (like IL-10).
Gut Barrier Protector: F. prausnitzii and butyrate help maintain a strong gut barrier, preventing “leaky gut” syndrome, where unwanted substances can leak from the gut into the bloodstream, triggering inflammation and contributing to various health problems.

Low F. prausnitzii: A Recipe for Gut (and Skin) Trouble

When F. prausnitzii levels are low, your gut can become vulnerable. Research has linked low abundance of this beneficial bacterium to several conditions, including:

Inflammatory Bowel Disease (IBD): Studies consistently show reduced F. prausnitzii in Crohn’s disease and ulcerative colitis patients.

Irritable Bowel Syndrome (IBS): Alterations in F. prausnitzii levels have also been observed in IBS.

Other Conditions: The list goes on, including liver diseases, metabolic disorders, and even neurological conditions.

The Gut-Skin Connection: What Does F. prausnitzii Have to Do with It?

Remember the “gut-skin axis”? It’s the communication highway between your gut and your skin. When your gut is inflamed and your gut barrier is compromised (partly due to low F. prausnitzii and butyrate), it can trigger systemic inflammation that manifests in your skin.

Inflammation: Reduced butyrate production can lead to increased inflammation, which is a key factor in many skin conditions, including acne, eczema, and psoriasis.

Skin Barrier: Butyrate may also play a role in maintaining a healthy skin barrier, protecting against irritants and dryness.

Immune Modulation: The gut microbiome influences the immune system, and imbalances can contribute to skin conditions with an immune component.

Atopic Dermatitis (eczema): Research suggests a link between lower levels of F. prausnitzii and an increased risk of developing atopic dermatitis in infants.

How to Feed Your F. prausnitzii and Boost Gut & Skin Health

The good news is that you can nourish your F. prausnitzii population through your diet! The key is resistant starch, a type of carbohydrate that resists digestion in the small intestine and travels to the colon, where it serves as a feast for F. prausnitzii and other beneficial bacteria. Top Sources of Resistant Starch:

Cooked and Cooled Potatoes: The process of cooking and then cooling potatoes (especially overnight in the fridge) significantly increases their resistant starch content. Think potato salad, or simply enjoy cold, cooked potatoes as a side dish. You can also dice cooked and cooled sweet potatoes and freeze. Add ¼ cup to smoothies for a creamy consistency.

Cooked and Cooled Rice: Similar to potatoes, when you cook and cool rice, some of the starch retrogrades into resistant starch. Leftover rice mixed into a green salad or sushi are great options.

Green Bananas: Unripe, green bananas are excellent sources of resistant starch. They’re less sweet than ripe bananas and can be added to smoothies for a creamy texture.

Oats: Choose uncooked rolled oats or make overnight oats by soaking them in liquid (like a dairy-free milk) in the fridge.
Legumes: Beans, lentils, and peas contain resistant starch, especially when cooked and cooled. Try a bean dip as your snack.

This information is for informational purposes only and is not intended as medical advice. Always consult with a healthcare professional before making significant changes that may impact your health.

The Bottom Line

F. prausnitzii is a crucial player in gut health, and a healthy gut is essential for healthy skin. By incorporating resistant starch into your diet, you can feed this beneficial bacterium, boost butyrate production, reduce inflammation, and support both your gut and your skin from the inside out. In The Derma-Gut Conncetion™ program we test for this marker as well as many more to see what’s going on inside your gut and how it’s impacting your skin. Imagine having a clear, personalized roadmap to achieving the healthy, radiant skin and vibrant gut health you deserve. Schedule a discovery call to learn more.

Acknowledgments

Special thanks to Victoria R. Barreras for contributing.

References

Parsaei, M., Sarafraz, N., Moaddab, S. Y., & Ebrahimzadeh Leylabadlo, H. (2021). The importance of Faecalibacterium prausnitzii in human health and diseases. New microbes and new infections, 43. Song, H., Yoo, Y., Hwang, J., Na, Y. C., & Kim, H. S. (2016). Faecalibacterium prausnitzii subspecies-level dysbiosis in the human gut microbiome underlying atopic dermatitis. Journal of Allergy and Clinical Immunology, 137(3), 852-860. This information is for informational purposes only and is not intended as medical advice. Always consult with a healthcare professional before making significant changes that may impact your health.

Red and Purple for a Happy Gut and Glowing Skin

Unlocking the Secrets of Polyphenols and Akkermansia

We’re learning that gut health is about so much more than digestion. The gut plays a vital role in immune regulation, metabolism, mood, and even skin health. One of the biggest reasons for this connection lies in the gut barrier, a protective mucosal “firewall” that keeps inflammation and unwanted immune activation in check.

When this barrier becomes compromised, it can trigger a cascade of inflammation that often shows up on the skin in the form of acne, rosacea, eczema, or premature aging.

One of the most fascinating ways to support both gut and skin health is through polyphenols, the colorful plant compounds found in foods like pomegranate, cranberry, and dragon fruit. These nutrients nourish beneficial gut microbes such as Akkermansia muciniphila, which play a key role in maintaining a strong, healthy gut lining.

Let’s dive into how these vibrant foods can support a balanced microbiome, a resilient gut barrier, and a glowing complexion.

What Are Polyphenols?

Polyphenols are naturally occurring compounds found in colorful fruits, vegetables, herbs, and drinks like tea and coffee. They protect plants from environmental stressors, and when we consume them, they do the same for our bodies.

In the gut, polyphenols act as prebiotic-like nutrients that feed beneficial microbes. When these microbes metabolize polyphenols, they produce smaller compounds that help lower inflammation, balance the immune system, and strengthen the gut lining.

A strong gut lining is essential for clear, resilient skin. When that inner barrier remains intact, it helps prevent inflammatory molecules from entering the bloodstream and affecting the skin’s outer barrier.

Top Food Sources of Polyphenols

Meet Akkermansia muciniphila: Your Gut’s Best Friend

Red and purple fruits such as pomegranate, cranberries, and dragon fruit
Berries (blueberries, raspberries, strawberries)
Dark chocolate and cocoa
Green and black tea
Coffee
Olive oil
Herbs and spices (turmeric, cinnamon, oregano, rosemary)

Akkermansia muciniphila is one of the most intriguing bacteria in the gut. It lives in the mucus layer that lines the intestines and helps maintain a healthy gut barrier—your body’s first line of defense against inflammation.

Here’s why Akkermansia matters for gut and skin health:

Gut Barrier Support: Akkermansia consumes mucin (a key component of mucus), stimulating the gut to produce more. This helps thicken the intestinal barrier and maintain integrity.
Short-Chain Fatty Acid Production: As it breaks down mucin, Akkermansia produces short-chain fatty acids (SCFAs) such as acetate. These compounds nourish other beneficial bacteria that produce butyrate, an essential energy source for colon cells.
Metabolic and Skin Benefits: Healthy levels of Akkermansia are linked to better blood sugar balance and reduced systemic inflammation, both of which influence skin clarity and texture.
Immune Regulation: By supporting a strong mucosal firewall, Akkermansia helps calm overactive immune responses that can manifest as skin irritation or redness.

Low Akkermansia levels have been associated with inflammatory bowel conditions, metabolic imbalance, and systemic inflammation that can show up on the skin. On functional stools tests, I often see very low akkermansia with my chronic skin condition clients, especially acne.

The Dynamic Duo: Polyphenols and Akkermansia

Research shows that certain polyphenols, especially those found in pomegranates, cranberries, and dragon fruit, help feed and promote Akkermansia muciniphila. This synergy supports gut barrier strength and helps keep inflammation under control—key for both gut and skin balance.

Pomegranate: The Ellagitannin Powerhouse

Pomegranates are rich in ellagitannins, which gut bacteria convert into beneficial compounds called urolithins. These metabolites have powerful anti-inflammatory effects and have been shown to encourage Akkermansia growth.

By strengthening the gut barrier and reducing systemic inflammation, pomegranate compounds may also help reduce skin redness and promote a smoother, more even complexion.

Ways to add pomegranate:

Sprinkle arils on yogurt, oatmeal, or salads
Enjoy a small glass of 100% pomegranate juice
Use pomegranate molasses as a glaze for vegetables or meats

Cranberries: The Proanthocyanidin All-Stars

Cranberries are best known for supporting urinary tract health, but they’re also rich in proanthocyanidins (PACs) that benefit the gut lining and microbiome. These PACs appear to feed Akkermansia and strengthen the mucosal layer.

Cranberries’ antioxidant and anti-inflammatory properties can help calm internal sources of inflammation that often contribute to skin flare-ups and dullness.

Easy ways to enjoy cranberries:

Add unsweetened dried cranberries to trail mix or granola
Make a fresh cranberry sauce with minimal added sugar
Blend unsweetened cranberry juice with sparkling water
Add cranberry powder to smoothies

Dragon Fruit: The Vibrant Polyphenol Booster

Dragon fruit, especially the red and magenta varieties, is rich in polyphenols, flavonoids, and betacyanins—powerful antioxidants that protect against oxidative stress and inflammation.

These compounds, including gallic acid, caffeic acid, and ferulic acid, support a healthy gut barrier while helping calm inflammation that can show up on the skin. By nurturing Akkermansia and other beneficial microbes, dragon fruit supports both gut balance and skin radiance.

How to add dragon fruit to your diet:

Blend into smoothie bowls
Add to yogurt or chia pudding
Enjoy fresh as a hydrating, gut-friendly snack

A Word on Supplements

You can find polyphenol supplements that include pomegranate and cranberry, and there are high-quality options out there.

Whenever possible, aim to get your polyphenols from whole foods first. Whole foods provide a complex matrix of fibers, antioxidants, and nutrients that work together to nourish your gut microbes, maintain your mucosal barrier, and support skin from within.

Evidence for the Benefits of Polyphenol-Rich Foods

A study in older adults residing in a care facility found that a polyphenol-rich diet improved intestinal barrier integrity, partly through modulation of the gut microbiome. Participants with elevated intestinal permeability consumed three daily servings of polyphenol-rich foods, including berries, pomegranate juice, green tea, and dark chocolate, for eight weeks. Following the intervention, zonulin levels (a key marker of intestinal permeability) significantly decreased. Higher polyphenol intake was also positively associated with the abundance of short-chain fatty acid–producing bacteria, which support colonic health and act as important signaling molecules. In contrast, pathogenic species showed a negative correlation with polyphenol consumption.

Servings from the study included:

3/4 cups of blueberries

1 cup of green tea

1/2 teaspoon cocoa powder

1 apple

1/2 cup pomegranate juice

If you want to boost your gut and support glowing skin, aim for 3 servings a day polyphenol-rich foods.

A colorful and varied diet provides a spectrum of plant compounds that work together to reduce inflammation, strengthen your gut’s mucosal firewall, and support a clear, healthy complexion.

The Takeaway

The gut and skin are deeply connected through the health of the gut’s mucosal barrier. When this barrier is strong, it acts like a firewall, keeping inflammation under control and supporting skin clarity, hydration, and resilience.

Polyphenol-rich foods—especially red and purple ones like pomegranates, cranberries, and dragon fruit—help beneficial bacteria such as Akkermansia muciniphila thrive. These compounds strengthen the gut barrier, reduce inflammation, and bring your skin’s natural glow to the surface.

So go ahead and paint your plate with the colors of health—your gut and skin will thank you.

Acknowledgments

Special thanks to Victoria R. Barreras for contributing.

References

Hu, Z., Xu, Y., Xiong, Y., & Huang, G. (2025). Mechanisms, Functions, Research Methods and Applications of Starch-Polyphenol Complexes in the Synergistic Regulation of Physiological Parameters. Foods (Basel, Switzerland), 14(18), 3219. https://doi.org/10.3390/foods14183219
Rasouli, H., Farzaei, M. H., & Khodarahmi, R. (2017). Polyphenols and their benefits: A review. International journal of food properties, 20(sup2), 1700-1741.
Abbas, M., Saeed, F., Anjum, F. M., Afzaal, M., Tufail, T., Bashir, M. S., … Suleria, H. A. R. (2016). Natural polyphenols: An overview. International Journal of Food Properties, 20(8), 1689–1699. https://doi.org/10.1080/10942912.2016.1220393
Peron G, Gargari G, Meroño T, Miñarro A, Lozano EV, Escuder PC, González-Domínguez R, Hidalgo-Liberona N, Del Bo’ C, Bernardi S, Kroon PA, Carrieri B, Cherubini A, Riso P, Guglielmetti S, Andrés-Lacueva C. Crosstalk among intestinal barrier, gut microbiota and serum metabolome after a polyphenol-rich diet in older subjects with “leaky gut”: The MaPLE trial. Clin Nutr. 2021 Oct;40(10):5288-5297. doi: 10.1016/j.clnu.2021.08.027. Epub 2021 Sep 9. PMID: 34534897.

Sunfiber and Psyllium Husk: Two Powerful Fibers for Digestion, Skin, & Metabolic Health

Two Fibers I Love:

Sunfiber and Psyllium Husk

Fiber is one of the simplest yet most powerful tools for better digestion, blood sugar balance, heart health, and even skin. But not all fibers act the same in the body. Two of my favorites are Sunfiber® (partially hydrolyzed guar gum, or PHGG) and Psyllium husk. Maybe you’ve tried one of these before and didn’t see results. Chances are you either weren’t taking enough or weren’t drinking enough water. Let’s set the record straight.

Sunfiber (PHGG): Gentle Prebiotic Support

Sunfiber is a soluble prebiotic fiber (a galactomannan from guar beans) that dissolves completely in water without clumping or turning into wallpaper paste. Because it is partially hydrolyzed, it is well tolerated, even by sensitive stomachs, and it is considered low FODMAP.

Feeds good bacteria: Sunfiber nourishes Bifidobacteria and Lactobacilli, two of the microbiome’s MVPs for digestion and immune balance.

Supports regularity: It promotes comfortable, consistent bowel movements without the urgency or cramping that other fibers sometimes bring.

Balances blood sugar: By slowing down glucose absorption, Sunfiber helps keep energy levels steadier after meals.

How to use it: Mix one scoop (about 6 grams) into water, tea, coffee, or a smoothie. Because it is tasteless and dissolves easily, it also hides well in soups or baked goods. For diarrhea, a half scoop with meals can help bring things back into balance.

Psyllium Husk: The Stool Normalizer

If Sunfiber is the gentle diplomat, psyllium husk is the strong and reliable construction worker of the fiber world. It is a soluble fiber with high viscosity, meaning it loves water, swells into a thick gel, and puts that gel to work in your gut.

Boosts the microbiome: Psyllium contains arabinoxylan, a prebiotic that feeds beneficial bacteria such as Faecalibacterium prausnitzii, known for producing short-chain fatty acids.

Calms inflammation: In IBS patients, psyllium has been shown to reduce C-reactive protein, a marker of inflammation.

Improves cholesterol and blood sugar: Its gel slows digestion, lowering LDL cholesterol and helping smooth out blood sugar spikes.

Normalizes stool: Psyllium softens hard stools in constipation, firms up loose stools in diarrhea, and helps restore normal form in IBS.

Why Water Matters

Psyllium is thirsty. It needs water to expand, do its job, and avoid turning into a brick in your gut. When taken with enough fluid, it carries that water through the digestive tract, producing stools that are softer, bulkier, and easier to pass.

Smaller doses, about 5 to 10 grams, can help. Research shows the magic really happens at higher amounts, about 20 to 25 grams per day, with at least 500 mL (2 cups) of water.

This combination has been shown to improve constipation, aid hemorrhoid healing, and provide long-term digestive relief.

How to Use It Without Cursing

Start with 1 teaspoon in 8 ounces of water once daily. Work up to 1 to 2 tablespoons per day, making sure you keep fluids flowing.

Yes, it gels quickly, but here is a pro tip: Do not start with a desert-dry mouth. Take a sip of something first.

Add your psyllium to an empty tall glass.
Pour in ½ to 1 cup of water and swirl like your life depends on it.
Drink fast. If you hesitate, it thickens, and suddenly you are eating fiber pudding with a spoon.
Did not finish it all? Add more water, swirl again, and down the rest.

Congratulations, you just conquered psyllium.

✨ Takeaway: If you are looking to improve digestion, metabolism, or overall gut health, consider these two powerhouses. Sunfiber is the friendlier option for sensitive guts, while psyllium shines for constipation and stool normalization. Start low, increase slowly, and always remember the golden rule of fiber: drink plenty of water. You can purchase professional quality supplements like these and many others by following the link below:

References

Sunfiber: FAQ page

Reider SJ, et al. Prebiotic Effects of Partially Hydrolyzed Guar Gum on the Human Microbiota. Nutrients. 2020;12(5):1257.

Garg P, Garg PK, Bhattacharya K, et al. Psyllium Husk Alters Gut Microbiota, Decreases Inflammation, and Normalizes Bowel Function in IBS. Gastroenterology. 2024;166(3):545–546.

Gibb RD, Sloan KJ, McRorie JW Jr. Psyllium as a Nonfermented Gel-Forming Fiber for Weight Loss: Review and Meta-analysis. J Am Assoc Nurse Pract. 2023;35(8):468–476.

Beyond Skin Deep: Could Your Gut Hold the Key to Clear, Healthy Skin?

Ever feel like you’re waging a never-ending battle against your skin? You’re not alone! Millions deal with chronic skin conditions like acne, eczema, rosacea and psoriasis. You’ve tried every cream, serum, and maybe even medication under the sun, but what if the real solution lies within?

We’re talking about your gut, of course! It might sound surprising, but a growing body of research is revealing a fascinating link between the trillions of microbes living in your digestive system (your gut microbiome) and the health of your skin. Think of it as an internal ecosystem that can either nourish your skin or wreak havoc on it.

The Gut-Skin Axis: Your Body’s Internal Social Network

Scientists call this connection the “gut-skin axis.” It’s a two-way street where your gut and skin are constantly chatting through a complex network of immune signals, hormones, and metabolites. When your gut is happy and balanced, it sends out positive vibes that promote healthy, glowing skin. But when your gut is out of whack (a state called dysbiosis), it can trigger inflammation that manifests as those pesky skin issues.

Here’s a sneak peek at how an unhappy gut can contribute to some common skin woes:

Acne: Gut dysbiosis can increase inflammation and alter sebum production, contributing to clogged pores and breakouts. (Bowe et al., 2014)
Eczema: An imbalanced gut microbiome can disrupt the skin barrier and trigger immune responses that lead to the itchy, red patches characteristic of eczema. (Lee et al., 2018)
Seborrheic Dermatitis: This condition, which causes scaly patches and dandruff, has been linked to alterations in the intestinal mucosa. (Odinstova et al., 2019)
Rosacea: Studies suggest that people with rosacea often have higher rates of small intestinal bacterial overgrowth (SIBO) and other gut imbalances. (Parodi et al., 2008)
Psoriasis: A systematic review of studies indicated alterations in the gut microbiome in those with psoriasis. (Sikora et al., 2020)

The Gut-Skin Superhero Squad: Your Dream Team for Clear Skin

So, how do you get your gut and skin back on speaking terms? This is where a multi-faceted approach comes in handy. And who better to guide you than someone who truly understands the gut-skin connection from the inside out?

Imagine a practitioner who is all of these things:

A Registered Dietitian (RD) with Functional Medicine Training: They can personalize your diet to nourish your gut, identify food sensitivities that might be triggering your skin, and recommend targeted supplements to rebalance your microbiome. Functional medicine training takes it a step further, helping them identify the root causes of your gut and skin issues.
A Licensed Esthetician: They have an in-depth understanding of the skin’s physiology and can provide tailored skincare advice and treatments that complement your gut-healing journey.
A Specialist in Gut Health: They’re up-to-date on the latest research on the gut microbiome and can use advanced testing (like stool tests) to assess your gut health and create a customized plan to restore balance.

The Derma Dietitian® was founded to help you connect the dots between your gut and your skin, offering a holistic approach that addresses the underlying causes of your skin condition, not just the symptoms.

Ready to transform your skin from the inside out? It might be time to explore the power of The Derma-Gut Connection™. By reclaiming your gut health, you’re not just improving your digestion; you’re investing in a happier, healthier complexion that truly glows! Book a discovery call to get started.

References:

Bowe, W. P., & Logan, A. C. (2014). Acne vulgaris, probiotics and the gut-brain-skin axis. Gut pathogens, 6(1), 1.
Lee, S. Y., Lee, E., Park, Y. M., & Hong, S. J. (2018). Microbiome in the gut-skin axis in atopic dermatitis. Allergy, asthma & immunology research, 10(4), 354-362.
Odintsova, I., & Dyudyun, A. (2019). Features of the composition of microorganisms inhabiting the intestinal mucosa in patients with seborrheic dermatitis. Dermatovenerol. Cosmetol. Sexopathol, 31-34.
Parodi, A., Paolino, S., Greco, A., Drago, F., Mansi, C., Rebora, A., … & Savarino, V. (2008). Small intestinal bacterial overgrowth in rosacea: clinical effectiveness of its eradication. Clinical Gastroenterology and Hepatology, 6(7), 759-764.
Sikora, M., Stec, A., Chrabaszcz, M., Knot, A., Waskiel-Burnat, A., Rakowska, A., Olszewska, M., & Rudnicka, L. (2020). Gut Microbiome in Psoriasis: An Updated Review. Pathogens (Basel, Switzerland), 9(6), 463.

Disclaimer: This post is intended for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any changes to your diet or treatment plan.