Amanda Callenberg
Gut Health Nutritionist & Nutritional Therapist (BANT, CNHC)
“Uncover what your body is really saying and finally find relief with Nutritional Therapy & Nervous System Support”
BANT & CNHC Registered - London based
Supporting clients online across the UK
Living with ongoing gut issues can be exhausting. Bloating, reflux or unpredictable digestion don’t just affect how your body feels, they influence daily decisions and your trust in your body. Restricting foods, anticipating flare-ups and planning your life around symptoms can create a cycle of stress and tension that’s hard to escape.
Many people find themselves moving between doctors, tests and diets in search of answers. Yet these approaches often look at digestion in isolation, and rarely provide the specific expertise or ongoing guidance needed for lasting change. It’s easy to start believing that nothing will truly work. But your symptoms aren’t random, and the lack of answers so far doesn’t mean your body can’t be understood.
Regaining confidence and creating the conditions for lasting relief begins with viewing your gut as part of a bigger picture.
Expert Gut Health Specialist - Professor Tim Spector
The gut is closely connected to the rest of your body. Digestion is influenced by your energy, hormones, sleep, mood and how you respond to everyday stress. This is why symptoms can fluctuate even when your diet stays the same, and why flare-ups can be triggered just as easily by pressure or emotional overwhelm as by food.
Nutritional Therapy looks at a much wider picture:
• What you eat
• How your digestion functions
• Your lifestyle
• Your sleep
• Your environment
• Your daily habits
My Mind Body Biome™ approach, shaped by almost a decade of experience, combines Nutritional Therapy with Functional Testing and gentle nervous system support.
This allows us to explore everything that influences digestion, from the health of your microbiome to how your body responds and adapts to daily life. From here, it becomes possible to move beyond the constant guesswork and confusion, rebuild trust in your body, and create a clearer, more supportive path forward.
With these different lenses, we connect the dots to understand the bigger picture of your health, choosing the right tools at the right time. Rather than forcing quick fixes, the focus is on noticing patterns, making gentle adjustments and working with how your body responds, leading you toward relief that actually lasts.
Renowned Trauma Specialist & Compassionate Inquiry Founder - Dr Gabor Maté
This support is designed to give you clarity and ongoing guidance, with additional tools used only if and when they’re appropriate for you.
You can expect:
✔ Clear insight into what’s driving your symptoms
✔ Structure to help you build sustainable long-term habits
✔ Ongoing support with regular check-ins so you’re not navigating this alone.
✔ Practical tools to support your gut health
✔ Targeted supplements, when appropriate
✔ Advanced functional testing, if needed, with results explained simply and clearly
✔ A compassionate, trauma-informed practice, bringing depth and understanding to our time together
For my clients, the combination of nutritional expertise and nervous system support makes all the difference, and for some it also gently reveals the subtle emotional layers connected to their health.
While many practitioners recognise that stress and mood affect digestion, most approaches stop at basic stress-management tools.
Integrating trauma-informed care, Compassionate Inquiry and somatic awareness allows the underlying patterns influencing symptoms to be explored gradually and safely over time, without forcing change.
Trauma-informed care isn’t about reliving the past or finding something “wrong” with you. It simply means recognising that health and behaviour are shaped by experience, and working in a way that prioritises safety, choice and pacing.
Somatic awareness offers an additional lens, helping you notice physical sensations as useful signals, rather than symptoms to ignore or push through.
Compassionate Inquiry then provides a gentle framework for exploring these responses with curiosity rather than judgement, supporting regulation and allowing long-held patterns to release, many of which express themselves most clearly through the gut.
By understanding the whole picture. your nervous system, emotions and history, we create a supportive context for digestive healing, reducing stress-driven flare-ups and allowing nutritional and lifestyle changes to be applied in a way that doesn’t just manage symptoms, but creates meaningful and lasting change.
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: IBS, bloating & reflux, food reactions, constipation & diarrhoea and stress-related gut issues.
Many of the people I work with have already tried generic paths and are looking for an approach that feels considered, tailored and sustainable. I offer highly personalised nutrition and lifestyle support, with the option to gently expand beyond this wherever it genuinely feels helpful.
My role is to create a path that feels clear, simple and manageable, while also giving you tools to process stress and release tension. Together, we restore balance and create the conditions for long-term gut health and lasting resilience.
“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 ⭐⭐⭐⭐⭐
“What I love most about Amanda is her non judgmental approach, she provides me a safe space where I feel confident enough to open up to her and she compassionately takes the time to listen and understand anything I share” - Zahraa ⭐⭐⭐⭐⭐
Across my work, clients often describe similar shifts: as clarity increases, their symptoms begin to make more sense, and they notice internal changes both physically and emotionally.
Many report:
✔ Relief from bloating, discomfort & flare-ups
✔ Digestion that feels easier and more predictable
✔ Steadier energy and clearer focus throughout the day
✔ A more regulated nervous system and greater sense of calm
✔ Feeling more relaxed and confident around food
✔ Greater body confidence and ease in social situations
✔ Freedom to live life fully again, without constant restriction
It’s completely understandable. Many people with long-standing gut symptoms 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 gut 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 gut symptoms 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 gut health when the picture isn’t yet clear, but we only use them if they will 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 bloating, reflux or ongoing digestive symptoms. 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 gut health.
Q2: What is a gut health nutritionist, and how can they help with bloating or reflux?
A: A gut health nutritionist is a registered professional who specialises in digestive health. They support people with bloating, reflux, constipation and other gut symptoms by identifying food triggers, improving digestion and restoring microbiome balance.
As a qualified digestive health nutritionist, I use evidence-based strategies and functional 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 improvement 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 your digestive symptoms.
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 bloating or reflux on my own, or do I need a gut health nutritionist?
A: Many people try to manage gut symptoms on their own by changing their 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 digestive 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, 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.
Your gut doesn’t need another quick fix.
It needs a personalised 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 while symptoms continue to interrupt daily life, 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.
A calm space to share what’s going on and explore your next steps.
If you’d like to learn more about me before booking a call, you’re welcome to read about my background, my nervous system–aware approach, and the inspiration behind my work, as well as explore detailed client testimonials.
amanda@amandacallenberg.com | +447984668090 | IG: @amandacallenberg
Before you head over, you may want to bookmark this page so it’s easy to come back to.
If you're curious about my work and interested in what it actually feels like, I offer a small number of FREE, standalone Somatic Compassionate Inquiry sessions each month.
This is not a call to discuss working together. It's simply a chance to personally experience this approach with time to reflect afterward.
