Amanda Callenberg

Gut Health Nutritionist & IBS Specialist (BANT, CNHC)

Considering Low FODMAP - or already tried it without relief?



BOOK YOUR FREE GUT HEALTH CALL

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

Uncover what your body is really saying, and finally find relief with Nutritional Therapy & Functional Testing

❄️START YOUR JOURNEY THIS MONTH ❄️ GET DECEMBER FOR FREE & BLOOD TESTING INCLUDED ❄️

❄️START YOUR JOURNEY THIS MONTH ❄️ GET DECEMBER FOR FREE & BLOOD TESTING INCLUDED ❄️

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Making Sense of Your Symptoms

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

For many people, this continues even after carefully following a Low FODMAP diet. They may have done everything “right”, avoided trigger foods, planned meals carefully, and still find that symptoms linger, fluctuate, or return. For others, the idea of another restrictive plan already feels overwhelming.

Even with an IBS diagnosis, many people are left feeling unsupported and confused. Too often they’re told that everything appears normal, or encouraged to stay on restrictive diets for longer, adjust food lists again, or rely on medication to manage symptoms. Rarely are they given the time, depth, or ongoing guidance to understand why their gut continues to react.

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.

IBS dietitian alternative informed by gut health research and evidence-based nutrition

Expert Gut Health Specialist - Professor Tim Spector

A Different Way Forward

For many people, gut symptoms don’t persist because they haven’t tried hard enough. Often, they continue because diet alone, including Low FODMAP, isn’t addressing everything that’s influencing digestion.

Your gut doesn’t work in isolation. It’s 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, flare-ups can be triggered or intensified 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 who feel stuck after diets like Low FODMAP. By combining Nutritional Therapy, Functional Testing and Mind Body support, I help identify why your gut is still reacting. 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 digestion and overall well-being.

IBS dietitian alternative using holistic Mind Body Biome method for lasting gut health
BOOK YOUR FREE GUT HEALTH CALL
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Specialist IBS Nutrition Support

Many people who find their way here have already tried Low FODMAP and feel unsure what to do next. They may still be reacting to foods, worried about reintroductions, or stuck rotating the same “safe” meals without real confidence that their gut is settling. Others arrive because they don’t want to start with restriction, but still want clear answers and a structured, evidence-based approach.

As a gut health nutritionist, my work focuses on helping people move beyond food lists and restrictions, and toward a clearer understanding of what their digestion actually needs. Rather than endlessly removing foods, we explore the underlying factors that influence gut symptoms, including digestive capacity, microbial balance, inflammation, stress patterns, nervous system regulation, and how the body responds over time.

This approach supports people with IBS, bloating, abdominal pain, constipation, diarrhoea, and mixed or unpredictable symptoms, particularly when diet changes alone haven’t brought lasting relief. The aim isn’t perfection or permanent restriction, but calmer digestion, greater food tolerance, and a more trusting relationship with your body.

When appropriate, functional testing can provide deeper insight into what’s happening beneath the surface. Combined with personalised nutrition, lifestyle support, and mind–body work, this creates a pathway forward that feels grounded, flexible, and sustainable, not another cycle of rules to follow.

Searched for an IBS Dietitian? Here’s What You Should Know

Many people who look for a dietitian are actually searching for clear answers, personalised guidance, and support that goes beyond restrictive diets or standard protocols like Low FODMAP.

As a Registered Nutritional Therapist and Gut Health Nutritionist (BANT, CNHC), I offer a functional, root-cause approach to IBS and gut health that complements, and often goes deeper than, typical dietetic care.

For people who have already tried diet changes but still feel stuck, this kind of support can help you understand what’s truly driving your symptoms and what your gut needs to finally settle.

This approach can support you whether you’ve already tried dietary protocols like Low FODMAP, or you’re looking for an alternative path from the start.

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IBS dietitian alternative offering personalised guidance for people seeking long-term gut relief
IBS dietitian alternative for those wanting deep, personalised IBS support rather than quick fixes
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.

Amanda Callenberg, IBS dietitian alternative and registered nutritional therapist in London

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

IBS dietitian alternative offering functional testing and personalised nutrition planning
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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 ⭐⭐⭐⭐⭐

 
 
 
Client success story working with an IBS dietitian alternative for long-term gut improvements
 
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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.

Next steps in working with an IBS dietitian alternative for calmer digestion and relief

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'd like to understand more about how my specialist IBS nutrition support works, whether you're dealing with bloating, constipation, diarrhoea, reflux, or unpredictable flare-ups, or 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.