Amanda Callenberg

IBS Nutritionist & Gut Health Specialist (BANT, CNHC)

“Are you tired of IBS controlling your life?”


BOOK YOUR FREE GUT HEALTH CALL

BANT Registered Gut Health & IBS Nutritionist - Based in London - Online UK wide
(so expert help is always within reach – wherever you are)

Uncover what your body is really saying, and finally find relief with Nutritional Therapy & Mind Body Support

❄️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 food reactions 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 or elimination diet, or medication to manage symptoms. Rarely are they given specific expertise, a comprehensive approach, or ongoing guidance.

Whether you’re searching for an IBS nutritionist ‘near me’, the support of an IBS nutritionist in London or simply looking for guidance that feels accessible wherever you are, it can be hard to know where to turn.

The first step towards regaining hope and creating the conditions for lasting relief is understanding why symptoms persist and what’s actually driving them.

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

Professor Tim Spector, gut health specialist referenced in IBS nutrition support.

Expert Gut Health Specialist - Professor Tim Spector

A Different Way Forward

Chronic gut issues like IBS rarely heal through restrictive diets, constant food avoidance, 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, IBS flare-ups can be triggered just as easily by stress or emotional overwhelm as by food.

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 IBS. Combining Nutritional Therapy, Functional Testing and Mind Body support, I look at everything that influences digestion, not just what you eat, but how your body responds, adapts, and holds stress.

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 IBS symptoms and overall well-being.

Mind Body Biome Method illustration showing the integration of mind, body and microbiome for IBS support.
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.

Nutritional therapy to support digestion and IBS symptom relief.
Functional gut testing used to investigate root causes of IBS symptoms.
Compassionate Inquiry supporting the gut brain connection in IBS.
Trauma informed support to help reduce stress-driven IBS flare ups.
 
Dr Gabor Maté, trauma specialist whose work informs the mind body approach to IBS.

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.”

Visual representing whether IBS nutrition support is the right fit.
Graphic explaining when IBS nutrition support may not be the right fit.
book your free gut health call

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

Amanda Callenberg, registered IBS nutritionist and gut health specialist.

Hi, I’m Amanda

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

I support people with ongoing gut issues such as IBS, bloating, reflux, 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 IBS 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

Image representing the improvements clients experience working with an IBS nutritionist.
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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 ⭐⭐⭐⭐⭐

 
 
 
“4.8 star Google rating for Amanda Callenberg, IBS nutritionist.”
 
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Quick Q & A

  • It’s completely understandable. Many people with IBS feel they’ve tried everything, every diet, every supplement, every specialist, yet still end up stuck in the same cycle of flare-ups and uncertainty. After years of being bounced between appointments without clear answers, it’s normal to feel discouraged.

    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 a GP, which can reveal things often missed or dismissed in standard care. This work isn’t about blanket solutions, it’s about ongoing support, asking the right questions, and understanding what’s truly driving your IBS symptoms.

    It’s far more than a generic meal plan or a ten-minute appointment; meaningful change 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, so we can begin to uncover what may be driving your IBS flare-ups or holding you back from feeling better.

    If it’s helpful, I’ll offer some insight into where you’re at right now. From there, I’ll explain how I work, answer any questions you have, and together we’ll see whether it feels like the right fit. No pressure, just an open conversation about what could help you move forward.

  • Not always.
    We begin by understanding your symptoms, health history and goals before deciding whether testing is necessary. Functional tests can offer deeper insight into IBS when the picture isn’t yet clear, but we only use them if they’ll genuinely support your progress, never as a requirement.

  • Q1: What is the difference between a gut health dietitian and a gut health nutritionist?
    A: Many people search for a "gut health dietitian" or "gut health nutritionist" when looking for support with IBS, bloating or reflux. In the UK, "dietitian" is a legally protected title, while "nutritionist" and "nutritional therapist" are regulated through professional bodies such as BANT and CNHC. Dietitians typically work in medical settings and focus on clinical testing, diagnosis and medical nutrition interventions.

    A gut health nutritionist takes a more holistic approach, using personalised nutrition, supplementation, lifestyle medicine and functional testing to address the root causes of digestive issues. As a registered Nutritionist and Nutritional Therapist (BANT, CNHC), my work combines these tools to support long-term IBS relief.

    Q2: What is a gut health nutritionist, and how can they help with IBS, bloating or reflux?
    A: A gut health nutritionist is a registered professional who specialises in digestive health. They support people with IBS, bloating, reflux and other gut issues by identifying food triggers, improving digestion and restoring microbiome balance.

    As a qualified digestive health nutritionist, I use evidence-based strategies and functional gut testing when appropriate to understand what is driving your symptoms. A good gut health specialist looks beyond a simple meal plan and takes time to understand your history, lifestyle, stress patterns and the gut brain connection. This personalised and ongoing support is what makes long-term IBS relief possible.

    Q3: Why work with a nutritionist specialising in gut health compared to, or alongside, my GP?
    A: Your GP plays an important role, especially in ruling out serious conditions. However, GP appointments are often brief and focused on symptom management. A gut health nutritionist has the time to look deeper into your history, lifestyle, diet and stress patterns to understand what is driving IBS, bloating or reflux.

    While a GP may focus on diagnosis or medication, a gut health specialist provides personalised and holistic support that addresses underlying causes. The two approaches work well together. Medical care ensures safety, while nutrition therapy provides the depth needed for lasting digestive change.

    Q4: Can I manage IBS, bloating or reflux on my own, or do I need a gut health nutritionist?
    A: Many people try to manage IBS or bloating on their own by changing diet or using supplements, but results are often short-lived or inconsistent. A gut health nutritionist brings expertise in identifying root causes, using science-based strategies and applying functional testing when helpful.

    They also provide a personalised plan and ongoing support that adapts to your lifestyle, stress patterns and changing symptoms. This type of guidance addresses diet, microbiome balance, the gut brain connection and nervous system support. These are key factors in achieving long-term IBS relief.

    Q5: Do I need to have in-person consultations?
    A: Not at all. Most clients work with me online and find it easier to stay consistent that way. As an online gut health nutritionist specialising in IBS, bloating and digestive health, I offer the same depth of support that you would receive in person.

    Whether you are looking for a London gut health nutritionist or prefer to work from home, the process is the same. We explore your diet, microbiome and nervous system to understand what is driving your symptoms. You receive a personalised plan, targeted nutrition for gut repair and ongoing guidance, all with the convenience and comfort of home.

Client success image encouraging visitors to book a free gut health call for IBS support.

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.

I’m a London-based BANT registered online IBS nutritionist supporting clients across the UK. Whether you're searching for an IBS nutritionist near you or specialist IBS support, my online clinic makes expert care accessible from anywhere.

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. Read more about IBS testing - Understanding how IBS affects digestion