Amanda Callenberg

“You don’t have to continue with your life on hold”

Uncover what your body is really saying through evidence-based Nutritional Therapy and Compassionate Inquiry

…from bloating, reflux and SIBO flare ups to lasting gut health.

BANT Registered Gut Health Nutritionist (CNHC) · Based in London - Online UK wide

BOOK YOUR FREE DISCOVERY CALL

Not sure whether you need a dietitian or nutritionist? Read on to understand how a functional nutrition approach goes beyond prescriptions, metrics and meal plans

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Trust Your Gut Again

Living with SIBO or GERD can feel exhausting.

Reflux, food reactions, irregular bowels and ongoing gut discomfort may have you stuck in a repeating cycle that’s hard to break.

Many people bounce between doctors, tests, and restrictive diets, and still end up feeling confused and unsupported.

Too often they’re told to “just live with it” or manage symptoms with medication, but rarely offered the specific expertise, holistic approach, or ongoing guidance needed for lasting change.

It’s easy to start believing that nothing will truly work.

Understanding why your SIBO or GERD symptoms persist is the first step toward lasting relief.

IBS nutritionist offering online support for bloating, reflux and digestion issues

Expert Gut Health Specialist - Tim Spector

start with a free chat

Digestive Health Involves More Than Your Gut

“The gut doesn’t work in isolation”

Chronic gut issues like SIBO or GERD rarely heal through restrictive diets, random supplements or medication alone.

The health of your microbiome and how well your digestion functions, together with the dietary, lifestyle and environmental factors that influence them, are all fundamental to ongoing gut health.

Your gut is deeply connected to every other system of the body - hormonal, immune and nervous. It not only influences your energy, mood, and sleep, but is also shaped by them.

Because the brain and gut are so closely linked, body states, emotional stress and unconscious patterns are often the drivers of ongoing gut problems.

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A Different Way Forward - Mind, Body & Microbiome

“Restore your biome, nourish the body, release unconscious patterns and create the conditions for deep healing”

As a Gut Health Specialist, I explore all the factors that influence healthy digestion. My Mind Body Biome™ approach combines practical, science-based nutrition, Functional Medicine, and lifestyle strategies with mind–body support.

This is about caring for your entire self, so you can move beyond symptoms and create the conditions for whole person healing.

Nutritional Therapy – Using Naturopathic Medicine and personalised lifestyle & nutrition guidance to identify triggers, nourish all systems of the body, and restore balance to your microbiome.

Functional Testing – Comprehensive gut, blood and SIBO breath testing provide deeper insight into what’s happening inside your body, helping to uncover drivers of gut imbalance, bacterial overgrowth and inflammation and complement targeted nutrition and lifestyle support.

Compassionate Inquiry – A therapeutic somatic method developed by Dr. Gabor Maté with practices to help regulate the nervous system while gently uncovering and releasing the unconscious patterns and emotions that shape your health.

Registered gut health dietician providing personalised nutrition therapy

True Healing with Gut Health Nutritionist Support

 

“Healing takes time, but meaningful change is possible with the right guidance. This is functional gut support beyond prescriptive diet plans with a structured, evidence-based framework that supports every layer of your health.”

 

“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 ⭐⭐⭐⭐⭐

book your free discovery call
 

Hi, I’m Amanda

I’m a London-based BANT Registered Gut Health Nutritionist and Nutritional Therapist (CNHC) specialising in the microbiome and the gut–brain connection.

Through my 1:1 online clinic, I support people with ongoing gut issues such as bloating, GERD, reflux and SIBO.

Together, we identify triggers, support digestion, and help them feel more in control through flare ups. We look beyond the surface to uncover what’s really driving imbalances - from diet, digestion, and microbiome balance to lifestyle factors, stressors and ingrained patterns that often lie at the root of their gut dysfunction.

From there, we identify the key areas that need support and create a plan using targeted nutrition, practical daily strategies and somatic tools to restore balance, build long-term resilience and optimise overall health.

My role is to make the path forward simple and manageable, offering expert guidance that fits into real life, while also providing the space for them to explore their hidden emotions and release tension held in the body.

Clients often tell me it’s the first time they feel truly heard and understood.

That’s when the body feels safe, the nervous system relaxes, and the gut can finally begin to heal.

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What You’ll Experience

* Relief from bloating, reflux, and unpredictable flare-ups

* Improved digestion so you feel light, comfortable, and at ease in your body

* Steadier energy, clearer focus, and relief from brain fog and fatigue

* A calm mind, balanced nervous system, and greater emotional resilience, creating both self-awareness and connection to self

* Freedom to enjoy meals and social occasions, with greater confidence and ease around food

* Clarity about what’s driving your symptoms, and the tools to sustain long-term gut health

* Functional testing, targeted support, with regular guidance and ongoing accountability

Mind–Body Support using Gabor Maté’s CI approach

Start With a Free Chat
 

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 uncover the missing pieces of the puzzle.
    As a BANT Registered Nutritionist and Nutritional Therapist (CNHC Registered), I can access 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 about what’s been happening for you, your symptoms, challenges, and what you’ve already tried.

    My aim is to understand more about you and, if possible, offer some insight into where you’re at right now. Together, we can explore what might be standing in the way of your progress and whether a nutritional therapy approach could help.

    From there, I’ll explain how I work, answer your questions, and see if it feels like the right fit. No pressure - just an open, honest 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 (dietitian) and a gut health nutritionist?
    A: Many people search for a SIBO dietician or GERD dietician when looking for digestive health support. While I’m not a dietitian, as a BANT Registered Nutritionist and CNHC Registered Nutritional Therapist, I specialise in nutritional therapy to support people living with SIBO, constipation, skin reactions or reflux, as well as those experiencing bloating and other gut-related issues.

    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 within medical settings, focusing on clinical 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. My approach combines personalised nutrition therapy, lifestyle support, and functional testing to address the underlying factors contributing to gut-related issues and help you build lasting digestive resilience.

    Q2: What is a gut health nutritionist, and how can they help with SIBO, bloating or reflux?
    A: A gut health nutritionist is a registered professional specialising in digestive health. They support people with SIBO, bloating and GERD 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 SIBO, 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 SIBO bloating GERD or diarrhoea. While a GP may focus on diagnosis and medication, a gut health 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 my SIBO or reflux on my own, or do I need a gut health nutritionist?
    A: While some people try to manage SIBO, or GERD 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.

“I can now eat things I never previously could” - Divya ⭐⭐⭐⭐⭐

“Amanda’s support goes far beyond nutrition” - Sam ⭐️⭐️⭐️⭐️⭐️

“I only wish I had thought to do this sooner” - Rene ⭐⭐⭐⭐⭐

 
Gut health specialist in London offering personalised nutrition support for IBS, SIBO, and bloating relief
 
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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.

Gut nutritionist in London helping clients find relief from bloating and SIBO

IBS & SIBO Nutrition Support for a Healthy Gut and a Healthy You

Book Your Free Discovery Call

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.