Leaky gut — or increased intestinal permeability, to use the clinical term — is one of those conditions that can quietly undermine your health for years before anyone thinks to look for it. If you’ve been wondering whether a leaky gut quiz might help you make sense of a jumble of seemingly unrelated symptoms, you’re in the right place. The frustrating truth is that increased intestinal permeability doesn’t show up on a standard blood panel, and many GP consultations end without answers. What it does produce is a recognisable cluster of symptoms that span well beyond the digestive system.
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In my practice, I see clients who have been told their test results are “normal” — yet they’re exhausted, their skin is flaring, their concentration is poor, and their list of food sensitivities seems to grow longer every year. When I hear that combination, the gut lining is one of the first places I look. This checklist won’t give you a formal diagnosis — nothing online can do that — but it will help you recognise whether your symptoms form a pattern worth taking seriously.
The Leaky Gut (Intestinal Permeability) Symptom Checklist
Work through the ten questions below as honestly as you can, thinking about how you’ve felt over the past three to six months rather than just this week.
- Do you experience food sensitivities or reactions that seem to be increasing over time?
- Do you have chronic bloating, gas, or digestive discomfort that is hard to pin down?
- Do you experience brain fog, poor concentration, or mental fatigue?
- Do you have skin issues such as eczema, acne, psoriasis, or unexplained rashes?
- Do you have a diagnosed autoimmune condition, or a close family member who does?
- Have you had multiple or prolonged courses of antibiotics in your lifetime?
- Do you experience joint pain or inflammation that isn’t linked to a specific injury?
- Do you have chronic fatigue that isn’t explained by sleep or activity levels?
- Is your diet high in processed foods, refined sugar, or alcohol?
- Do you experience frequent headaches or low-grade inflammation?
Give yourself 1 point for every “Yes” answer, then check your score below.
What Your Score Means
0–3: Leaky gut is less likely to be a primary concern, though general gut support through diet is always beneficial. It’s still worth paying attention to your digestive health as a foundation for overall wellbeing, and keeping an eye on any symptoms that begin to develop or worsen over time.
4–6: A moderate cluster of symptoms associated with increased intestinal permeability. Worth reviewing diet, stress levels, and gut-supporting nutrients. Something I always explain to clients in this range is that this score doesn’t mean something is seriously wrong — but it does mean your gut is asking for more attention than it’s currently getting. Small, consistent dietary changes can make a meaningful difference here.
7–10: A significant pattern suggesting the gut lining may be compromised. This is a good starting point for a conversation with a gut-focused nutritionist or integrative practitioner. In my experience, clients who score in this range often feel a sense of relief simply knowing that their varied, hard-to-explain symptoms may share a single root cause. Please don’t use this score to self-diagnose — but do use it as motivation to seek proper support.
Understanding What These Symptoms Mean
The intestinal lining is a remarkable structure — just one cell thick in places, yet responsible for deciding what passes into your bloodstream and what stays out. When this barrier is functioning well, it allows nutrients through while keeping pathogens, toxins, and undigested food particles where they belong. When the tight junctions between those cells become compromised ��� through chronic stress, a poor diet, antibiotic use, or infections — larger molecules can slip through. The immune system, encountering substances it doesn’t recognise, mounts an inflammatory response. That response doesn’t stay neatly contained to the gut.
This is why leaky gut symptoms can feel so scattered and confusing. Systemic inflammation can manifest as joint pain, skin flares, or persistent fatigue. When inflammatory signals cross the blood-brain barrier — something research into the gut-brain axis has increasingly illuminated — cognitive symptoms like brain fog and low mood can follow. The immune system’s heightened reactivity can also begin triggering responses to foods that were previously tolerated without issue, which explains why so many of my clients notice their food sensitivities expanding over time rather than remaining static.
It’s also worth understanding the role of the microbiome in this picture. A disrupted gut microbiome — whether from antibiotics, a low-fibre diet, or chronic stress — reduces the production of short-chain fatty acids like butyrate, which are essential fuel for the cells that maintain the intestinal lining. This creates a cycle where a compromised microbiome contributes to a compromised barrier, which in turn drives further dysbiosis. The good news is that this cycle can be interrupted — and nutrition is one of the most powerful tools available for doing so.
Take a Validated Leaky Gut (Intestinal Permeability) Quiz
The checklist above is a useful starting point, but it’s always worth cross-referencing with additional resources designed by gut health specialists. The following tool offers a more structured self-assessment that may add further context to your score and help you have a more informed conversation with a practitioner.
The Nourish Gut Health Self-Assessment is a “Do I Have a Healthy Gut?” quiz that covers intestinal barrier function alongside other key markers of digestive health. It’s a well-constructed tool and a worthwhile complement to the symptom checklist you’ve just completed.
What to Do Next
If your score suggests that intestinal permeability may be a factor in how you’re feeling, the most important first step is to seek a professional consultation. A registered nutritionist or integrative GP who specialises in gut health can help you investigate further, rule out other conditions such as coeliac disease or inflammatory bowel disease, and build a personalised protocol. Please don’t attempt to navigate this alone based on a quiz score — this is a starting point, not an endpoint.
In the meantime, there are evidence-informed nutritional supports that I regularly discuss with clients working on gut lining integrity. L-glutamine is an amino acid that serves as the primary fuel source for intestinal epithelial cells, and it’s one of the most researched nutrients in this space. I often point clients towards Essential Stacks Gut L-Glutamine Powder (60 Servings, Unflavored) as a clean, straightforward option, or the Essential Stacks Gut L-Glutamine Powder (100 Servings, Unflavored) if you prefer better value for longer-term use. Both are made exclusively in the USA and are unflavoured, which makes them easy to add to water, smoothies, or soups without affecting the taste.
For a more comprehensive botanical formula, the Gut Assist Leaky Gut Support Powder by Dr. Danielle combines L-glutamine with arabinogalactan, liquorice extract, and additional gut-supportive ingredients in a doctor-crafted formula across 40 servings. It’s a good option for those who prefer a multi-ingredient approach in a single product. Whichever route you choose, I’d always recommend starting with a lower dose and introducing any new supplement gradually — and always in conjunction with advice from a qualified professional.
Alongside targeted supplementation, the dietary foundations matter enormously: reducing ultra-processed foods, refined sugar, and alcohol; increasing dietary fibre from diverse plant sources; managing stress through whatever sustainable practices work for you; and prioritising sleep. These aren’t glamorous recommendations, but in my experience they are the ones that create lasting change.
I want to leave you with this: if you’ve been dismissed, or told your symptoms are just stress, or handed a normal blood result and sent home feeling no better — your experience is valid. The gut lining is not something most conventional medicine investigates routinely, but that doesn’t mean it isn’t worth investigating. I developed much of my clinical focus in this area because I watched my husband struggle for years with symptoms that nobody could explain, and I know how isolating that experience can be. This quiz is a small step, but small steps taken in the right direction are how things change. I’m rooting for you — and your gut.
— Lucy Bamboo, Registered Nutritionist
