Functional Medicine for Leaky Gut with Mosaic Medical
A Root-Cause Approach to Healing Leaky Gut
Intestinal hyperpermeability, often called leaky gut, happens when the lining of the small intestine becomes more permeable than it should be. This allows undigested food particles, toxins, and bacteria to “leak” into the bloodstream, which can trigger widespread inflammation and immune activation.
- Bloating or gas
- Food sensitivities
- Brain fog
- Fatigue
- Joint pain
- Skin issues (acne, eczema, rashes)
- Autoimmune flare-ups
It’s worth noting that some degree of “leakiness” is normal — it’s how nutrients pass into the bloodstream. The concern arises when this permeability is excessive, leading to inflammation and immune dysfunction.
Because this doesn’t show up on standard medical testing, conventional medicine often overlooks it. In functional medicine, however, intestinal hyperpermeability is recognised as a key factor in many chronic health conditions.
Our Functional Medicine Approach to Leaky Gut
At Mosaic Medical, we focus on identifying what is damaging your gut lining in the first place and creating a clear path to repair.
- Advanced stool testing to evaluate microbiome balance and gut chemistry, as well as blood testing to assess leaky gut markers
- Additional tailored testing may be needed to identify root causes of inflammation eg. Food intolerances, chronic infections and nutrient deficiencies Step-by-step focus on each gut layer: microbiome, mucous lining, barrier, and immune system
- Anti-inflammatory and gut-repairing nutrition plans
- Targeted, evidence-based supplements
- Personalised treatment strategies designed for long-term resilience
This staged process helps us repair the gut lining, restore microbial balance, and reduce systemic inflammation.
What Makes Our Clinic Different
- Medical expertise – safe, evidence-based care provided by GMC-registered doctors
- Advanced testing – going beyond standard gastroenterology tools
- Root-cause clarity – not just identifying permeability, but why it has occurred
- Experience with complex cases – including autoimmunity and mould-related illness
- Compassionate, whole-person care – we take time to hear your story and tailor treatment accordingly
- Integrated options – from prescriptions to lifestyle interventions, ensuring a balanced, safe approach
Common Root Causes We Investigate
We look at the deeper drivers of intestinal hyperpermeability, including:
- Gut infections (parasites, yeast, bacteria)
- Chronic stress and cortisol imbalance
- Food sensitivities and inflammatory diets
- Toxin exposure (pesticides, mould, chemicals)
- Overuse of antibiotics, NSAIDs, or alcohol
- Nutrient deficiencies
- Address what’s found – clearing infections, toxins, or triggers.
- Prevent recurrence – strengthening gut integrity and resilience for the future.
FAQ – Leaky Gut & Functional Medicine
Is leaky gut a real condition?
Yes and no. The gut is designed to allow nutrients through — but when permeability becomes excessive, it overstimulates the immune system and drives inflammation. We refer to this as intestinal hyperpermeability, which is increasingly recognised in research.
Can you test for leaky gut?
Not directly with a single test. We assess markers such as immune reactivity, lipopolysaccharides, and microbiome status using advanced stool and blood testing.
Is leaky gut reversible?
Yes. With the right management, many people can repair their gut lining and restore microbial balance.
How do you treat it differently than a gastroenterologist?
Rather than suppressing symptoms, we focus on what’s breaking down the gut barrier and create a plan to rebuild and protect it long-term.
Do you offer remote consultations?
Yes, we work with patients virtually across the UK.
How do appointments work?
Your first appointment is 90 minutes. Your doctor will have already reviewed your case, and during the consultation we’ll identify key issues, explore likely causes, and decide together on next steps and testing.
Does the appointment price include testing?
Testing is tailored and charged separately. We only recommend tests that will meaningfully impact your treatment plan.
I already have test results and a diagnosis – can you still help?
Yes. You can upload your results before your consultation. If there are many, a small preparation fee may apply, but we’ll confirm this with you first.
How does the nutrition side work?
We provide nutrition guidance as part of your plan. If your case is complex, we may recommend working with our nutritional therapist alongside your doctor for faster and more effective results.
Ready to Heal From the Inside Out?
We recommend starting with a free discovery call with one of our doctors or nutritional therapists. This allows you to share your situation, ask questions, and decide whether our approach feels right for you.