Amanda Callenberg

“Are you tired of IBS controlling your life?”

Uncover what your body is really saying, and finally find relief with evidence-based Nutritional Therapy and Mind Body support.

…from bloating and discomfort to lasting gut health.

BANT Registered Gut Health & IBS Nutritionist - CNHC · Based in London - Online UK wide

BOOK YOUR FREE GUT HEALTH CALL

❄️START YOUR JOURNEY THIS MONTH ❄️ DECEMBER COMPLIMENTARY & BLOOD TESTING INCLUDED ❄️

❄️START YOUR JOURNEY THIS MONTH ❄️ DECEMBER COMPLIMENTARY & BLOOD TESTING INCLUDED ❄️

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Making Sense of Your Symptoms

Living with bloating, reflux or unpredictable digestion can feel exhausting.

Constipation or diarrhoea, flare ups and restriction may have you stuck in a repeating cycle that’s hard to escape. Even with an IBS diagnosis, many people are left feeling unsupported and confused.

Too often they’re told “everything appears normal” or at best they’re offered a low FODMAP diet or medication to manage symptoms. Rarely are they given specific expertise, a comprehensive approach, or ongoing guidance.

It’s easy to start believing that nothing will truly work. Understanding why these symptoms persist is the first step toward lasting relief.

This begins with viewing your gut not in isolation, but as part of your whole self.

Expert Gut Health Specialist - Professor Tim Spector

A Different Way Forward

Chronic gut issues rarely heal through restrictive diets, random supplements or medication alone. Your gut is closely linked to every other system in the body, especially the nervous, immune and hormonal systems. And because the brain and gut are so interconnected, stress, tension and unresolved experiences can often act as hidden drivers of ongoing symptoms.

My Mind Body Biome™ approach, shaped by almost a decade of experience, reflects the most effective way I’ve found to support people with long-standing gut issues. I look at everything that influences digestion, not just food or symptoms.

Addressing any one of the mind, body or microbiome can be hugely beneficial. But it’s when all three are considered that we begin to see meaningful, sustainable improvements in digestion and overall well-being.

BOOK YOUR FREE GUT HEALTH CALL
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How it Works

While it can be helpful to think about the body as three distinct areas, it doesn’t operate as separate systems, so neither do I. Integrating these pillars requires an approach that works across the whole body, not in isolated parts. My work brings together practical nutritional therapy, lifestyle support and functional testing with a gentle, trauma-informed, mind–body perspective.

 

Renowned Trauma Specialist & Compassionate Inquiry Founder - Dr Gabor Maté

A note on Compassionate Inquiry & “Trauma Informed Care”


Long-standing gut issues are rarely just about food. They’re often shaped by stress, subconscious patterns, and the way emotions are held in the body.

Compassionate Inquiry, a therapeutic approach developed by Dr Gabor Maté, alongside nervous system support and trauma-informed care, creates space for these deeper influences to be gently explored.

Being trauma-informed means recognising that physical health, emotions and behaviour are shaped by past experiences. Trauma isn’t limited to major events, and this work is not about reliving the past or searching for something “wrong” with you.

Here, trauma is less about what happened and more about how the body learned to adapt during times that may have felt overwhelming or unsafe.

By incorporating Compassionate Inquiry and trauma-informed care within my work, the Mind Body Biome™ Method addresses what many other approaches overlook.

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“Health begins in the gut - but healing begins in the nervous system.”

book your free gut health call

No quick fixes. No one-size-fits-all programs. This is structured, evidence-based gut health support that addresses every layer of your health.

Hi, I’m Amanda

I’m a London-based Registered Gut Health Nutritionist and Nutritional Therapist (BANT, CNHC),

I support people with ongoing gut issues such as IBS, bloating, reflux, SIBO, and constipation.

Together, we look beyond the surface to address diet, microbial balance, lifestyle, stressors and emotional responses that shape digestion.

I offer a deeply personalised level of support that includes, but extends far beyond, nutrition and testing. My role is to make your path feel simple and manageable, while offering space for gentle somatic practices that help release held tension, restore balance and lay the foundations for long-term gut resilience.

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What You’ll Receive When We Work Together

A clear understanding of what’s driving your symptoms

A personalised gut-health plan tailored to your life, routines, and emotional needs

Food & meal guidance so you finally know what nourishes your gut without confusion or restriction

Targeted supplementation (when required) - strategic support for digestion and microbial balance

Advanced Testing (if needed) - with results explained in plain, human language

Mind–body support - gentle somatic practices and Compassionate Inquiry to calm the nervous system & reduce stress-driven gut symptoms

Practical tools and strategies that help you understand your body’s signals and respond with confidence

Regular check-ins and ongoing guidance - so you’re never left alone trying to figure things out by yourself

What People Experience

Book Your Free Gut Health Call

What My Client Say

“I worked with Amanda for six months and the difference has been remarkable. Her tailored eating plan, supplement support and careful use of testing gave me insights I’d never had before. The results were genuinely startling” - Manny ⭐⭐⭐⭐⭐

“Amanda's guidance has been both practical and deeply supportive. I’ve seen genuine improvements in my energy, digestion and overall wellbeing, and for the first time nutrition feels simple, sustainable and actually enjoyable” - Peter ⭐⭐⭐⭐⭐

“My GP had struggled for years to get me a diagnosis or effective treatment. Amanda took the time to listen to my history and issues and within weeks, I saw a massive difference” - Martina ⭐⭐⭐⭐⭐

 
 
 
Gut healing nutritionist – a functional alternative to a gut health dietitian, offering holistic nutrition support for IBS, reflux, and SIBO.
 
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Quick Q & A

  • It’s understandable. You may feel like you’ve tried everything: every diet, every supplement, every specialist.
    Many people come to me feeling frustrated after years of being bounced between appointments without real answers.

    My role is to help find the missing pieces of the puzzle.
    As a registered Nutritional Therapist, I have access to advanced testing beyond what’s typically offered by your GP, helping to reveal things that are often missed or dismissed within standard care.
    This work isn’t about blanket solutions, it’s about ongoing support, asking the right questions, and uncovering what’s really going on beneath the surface.
    It’s more than a generic meal plan or a ten-minute appointment at the doctor’s office; it takes time, patience, curiosity, and compassion.

  • The discovery call is a relaxed space to talk through what’s been happening for you, your symptoms, challenges, and what you’ve already tried.
    It’s less about me and more about understanding you, and, if possible, offering some insight into where you’re at right now so we can uncover what might be standing in the way of your progress.
    From there, I’ll share how I work, answer any questions you have, and see if it feels like the right fit. No pressure, just an open conversation about what could help you move forward.

  • Not always.
    We start by understanding your symptoms, health history, and goals before deciding whether testing is necessary.
    Functional tests can offer deeper insight when needed, but we only use them if they’ll genuinely support your progress, never as a requirement.

  • Q1: What’s the difference between a gut health dietician and a gut health nutritionist?
    A: Many people search for a “gut health dietician” or “gut health nutritionist” when looking for support with digestive issues like IBS, bloating or reflux. In the UK, “dietitian” is a legally protected title, while “nutritionist” and “nutritional therapist” are also regulated through professional bodies. Dietitians typically work within medical settings, focusing on clinical testing, diagnosis, and medical nutrition interventions. A gut health nutritionist or digestive health nutritionist often takes a more holistic approach, using personalised nutrition, supplementation and lifestyle medicine to support long-term gut health. I am a registered Nutritionist and Nutritional Therapist (BANT, CNHC), and my approach combines personalised nutrition therapy, lifestyle support and functional testing to address the root causes of gut-related issues.

    Q2: What is a gut health nutritionist, and how can they help with IBS, SIBO, bloating or reflux?
    A: A gut health nutritionist is a registered professional specialising in digestive health. They support people with IBS, SIBO, bloating, reflux and other digestive issues by identifying food triggers, improving digestion and restoring microbiome balance. As a qualified digestive health nutritionist, they have access to science-based strategies and functional gut testing which allows them to uncover root causes and create the conditions to reduce flare-ups and discomfort. A good gut health specialist offers more than just a meal plan - they take time to understand your history and lifestyle, and treat you as a whole person rather than just test results. This personalised, human approach, combined with ongoing support, is what makes long-term results possible. And because IBS, bloating and reflux often involve the gut–brain connection, in my work as a nutritionist specialising in gut health, I also address stress, nervous system balance and emotional health.

    Q3: Why is it good to work with a nutritionist specialising in gut health compared to, or alongside, my GP?
    A: Your GP is invaluable, but they usually only have a few minutes to focus on managing your symptoms or ruling out serious medical issues. A gut health nutritionist or digestive health nutritionist has the time to look deeper, exploring your history, lifestyle, diet and stress patterns to understand what’s driving problems like IBS, bloating, reflux or SIBO. While a GP may focus on diagnosis and medication, a gut health specialist nutritionist offers personalised, holistic support that addresses the root causes. The two approaches work best together: medical care ensures safety and oversight, while nutrition therapy provides the time and depth needed for long-term digestive health.

    Q4: Can I manage IBS, bloating or reflux on my own, or do I need a gut health nutritionist?
    A: While some people try to manage IBS, SIBO, bloating or reflux on their own by changing diet or using supplements, results are often short-term or inconsistent. A gut health nutritionist (or nutritionist specialising in gut health) brings expertise in identifying root causes, using science-based strategies, and applying functional testing when needed. More importantly, they provide a personalised plan and ongoing support that takes into account your history, lifestyle, stress patterns, and ongoing changes - something a “DIY” approach often misses. Working with a qualified gut health nutritionist means addressing not only diet, but also microbiome balance, and, when combined with compassionate inquiry, the gut–brain connection and nervous system support. This kind of guidance helps turn trial-and-error symptom chasing into long-term relief and lasting gut health.

    Q5: Do I need to have in-person consultations?

    A: Not at all. Most of my clients work with me through online consultations and most find it easier to stay consistent that way.
    As an online gut health nutritionist specialising in IBS, SIBO, bloating, and digestive health, I offer the same depth of support you’d receive in person.
    Whether you’re searching for a London gut health nutritionist or prefer functional nutrition for digestion and gut healing from home, the process is exactly the same: we explore your diet, microbiome, and nervous system to uncover what’s really driving your symptoms.
    You’ll receive a personalised plan, targeted nutrition for gut repair, and ongoing guidance, everything you’d expect from a private gut health clinic, just with the convenience and comfort of your own home.

Your Next Step

Your gut doesn’t need another quick fix.

It needs a personalised, natural approach with the right tools and ongoing guidance that considers the whole picture - from digestion to emotional well-being.

If you’re tired of short-term solutions, or of trying to figure this out alone, it may be time to explore what true support feels like.

A powerful first step, if what you've read so far resonates, is to book a free call.

It’s simply a chance to share what’s going on, see if working together feels right, and explore your possible next steps - no pressure, just a gentle chat.

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Book Your Free Gut Health Call

❄️START YOUR JOURNEY THIS MONTH ❄️ DECEMBER COMPLIMENTARY & BLOOD TESTING INCLUDED ❄️

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❄️START YOUR JOURNEY THIS MONTH ❄️ DECEMBER COMPLIMENTARY & BLOOD TESTING INCLUDED ❄️ 〰️

  • When you begin a 3 or 4 month package in December and pay in full, you receive:

    December at no cost - up to 4 weeks of additional support at the start of your journey.

    Medichecks ‘Ultimate Performance Blood Testing’ included - value £234

    Your initial consultation and blood testing take place in December, allowing you to begin January with your results and a clear, personalised plan.

    This means you don’t have to navigate December alone - you’ll have support in your corner during one of the busiest and most challenging months of the year, and you’ll step into The New Year with clarity, momentum and well on your way.

    This offer applies to new package enrolments in December only.
    Payment is made in full at the start of your programme.
    Complimentary weeks are limited to the month of December, included as part of your support period, and are not deferred or added at the end of your package.
    Testing offer includes test and blood draw.

If you want to explore a little further first, you can learn more about my Mind Body Biome Method, Read Client Testimonials, See Pricing, and discover more About Me and how I came to do the work I do, by clicking the links.