Gut Health & IBS Nutritionist
AmandaCallenberg
— BANT·CNHC·4.8 Google rated
Amanda Callenberg in her kitchen

Are you tired of planning your life around your IBS?

This isn't just about food.

Personalised 1:1 supportBuilt around your body
No rigid dietsNo overwhelm

A deeper approach to IBS and chronic digestive symptoms for women who still feel stuck despite diets, supplements, or protocols.

Eat without fear or constant second-guessing

Feel calmer and more comfortable in your body

Experience steadier digestion and fewer flare-ups

Gut HealthNervous SystemHormonal BalanceFunctional TestingNutritionCompassionate Inquiry
i.A Familiar Place

When It Feels Like Nothing Makes Sense

You might be dealing with

  • Bloating
  • Abdominal pain
  • Diarrhoea or constipation
  • Reflux
  • Food sensitivities
  • Anxiety around food
  • Fatigue
  • Brain fog

You've become hypervigilant around symptoms, constantly scanning your body, analysing food, or anticipating flare-ups before they happen.

Your symptoms are affecting your confidence, routines, and sense of freedom.

There's so much information — you don't know what to trust or what your body actually needs.

It feels like something important is missing.

ii.An Invitation

This Is For You If —

  1. 01

    Your gut feels increasingly reactive or unpredictable, and you're not sure why

  2. 02

    Your symptoms have become emotionally and physically consuming

  3. 03

    You've made changes to support your gut, but your body still feels stuck in the same cycle

  4. 04

    You've started to lose trust in your gut, and it's affecting your day-to-day life

  5. 05

    Symptoms often worsen during periods of stress, pressure, or overwhelm, even when you're eating well

  6. 06

    You're ready to finally address what's been keeping you stuck

If your digestion is still reactive, despite everything you've tried — this is where you begin to understand why.

Book Your Free Clarity Call

A focused, 30-minute conversation to understand your symptoms, what's been keeping you stuck, and whether this approach is the right fit for you.

iii.What's Included

You'll
Receive

01 · Structure
A tailored plan with clear, flexible strategies to support lasting change.
02 · Support
Ongoing support and regular check-ins, so you are not navigating this alone
03 · Supplements
Targeted supplements, when appropriate
04 · Testing
Advanced functional testing, if needed, with results explained simply and clearly
05 · Depth
A compassionate, experience-informed approach that brings depth and understanding to our work together

Clients receive a minimum of 5 to 10 hours of dedicated 1:1 support.

iv.The Approach

How This Works

Amanda Callenberg working at her desk

Hi, I'm Amanda. I'm an Australian-born, London-based registered nutritional therapist (BANT, CNHC), specialising in gut health.

I specialise in supporting people with IBS, SIBO, and persistent gut symptoms that haven't fully responded to diets, supplements, or standard approaches, particularly where stress, overwhelm, and a highly reactive nervous system are playing a role.

Rather than looking at your gut health in isolation, we explore how different systems in the body interact — including digestion, immune health, blood sugar, nutrient status, and nervous system regulation.

This is a highly personalised, whole-body approach combining nutrition, lifestyle support, and practitioner-led nervous system work to help you understand the deeper patterns beneath your symptoms.

Together, we create a structured but flexible path that feels clear, manageable, and deeply supportive — reducing stress and tension in the body while building the foundations for long-term gut health and resilience.

"Many people are told the solution to their IBS is more discipline, restriction, or finding the 'perfect' diet. But in many cases, persistent symptoms are being driven by a body that has become stuck in cycles of stress, sensitivity, and dysregulation."

This is where gut health begins to make more sense.

Book Your Free Clarity Call
v.The Deeper Picture

A Deeper Way To Understand IBS

The gut is closely connected to the rest of your body.

Often, IBS symptoms persist not because someone is "doing it wrong", but because digestion is influenced by far more than food alone.

Stress, sleep, hormones, immune health, energy, lifestyle, and the overall demands placed on your system over time can all influence how reactive digestion becomes.

Over time, many people become hypervigilant around symptoms, disconnected from hunger and body signals, and stuck in patterns of constant monitoring or restriction.

The foundation of my Mind Body Biome™ approach is understanding gut symptoms as part of a bigger picture.

The gut and nervous system are closely connected.

Many people notice symptoms worsen during periods of stress, anxiety, pressure, burnout, poor sleep, or emotional overwhelm.

Over time, digestive symptoms themselves can also place the body into a more protective and reactive state.

This can look like:

  • • Increased food sensitivity
  • • Unpredictable flare-ups
  • • Feeling constantly on edge around food or symptoms
  • • Symptoms continuing even when nutrition is "right"
  • • A busy mind that never fully switches off

While many practitioners recognise that stress and mood influence digestion, most approaches remain limited to basic stress-management tools.

Compassionate Inquiry offers a deeper yet gentle way of exploring protective patterns, rather than simply managing or compensating for them.

This work helps uncover how the nervous system and body have adapted to stress over time. By creating the safety needed to feel difficult emotions, the body can gradually move out of protection mode and into a state more supportive of healing.

Experience-informed care recognises that the body adapts to what it lives through.

For many people with long-standing digestive symptoms, there is often a history of chronic stress, burnout, pressure, overwhelm, or feeling disconnected from their body.

This can influence how the nervous system responds, how digestion functions, and how much capacity the body has available for healing.

This approach is not about overanalysing the past but about creating a calmer, more supportive way of working with the body.

That includes:

  • • Working at an appropriate pace
  • • Reducing overwhelm
  • • Supporting regulation and stability first
  • • Creating realistic, sustainable changes
  • • Helping symptoms make sense within a bigger picture

For some clients, this deeper layer of support becomes an important part of why symptoms finally begin to settle.

For IBS support that looks beyond symptoms alone, the next step is to book a free call.

A Gentle Starting Place

IBS Quiz

Most people who arrive here already sense their IBS symptoms are being driven by more than food alone.

This short IBS Quiz explores your digestion, energy, stress patterns, and daily demands to help you understand what may be driving your symptoms and where your body may need the most support.

This does not replace 1:1 care, but it can offer a useful snapshot of what your system may be dealing with right now.

Take the IBS Quiz2 Minutes · No Email Required
vi.Testimonials

What My Clients Say

★★★★★  ·  Five-star rated
"
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

If you recognise yourself in this approach and are serious about changing how IBS affects your life, it starts below.

vii.Outcomes

What Clients Experience

As clarity increases, symptoms begin to make more sense, and clients often begin to notice changes both physically and emotionally.

01 · Relief
Less bloating, discomfort, and fewer flare-ups
02 · Stability
Digestion that feels more predictable and easier to manage
03 · Calm
Feeling calmer in your body instead of constantly uncomfortable or on edge
04 · Ease
Eating without worrying how your stomach will react afterwards
05 · Confidence
Going out, travelling and feeling more spontaneous again instead of always calculating risk around food, symptoms, or plans.
06 · Freedom
More freedom to live life without constant restriction
A woman standing in a sunlit field at golden hour
viii.Working Together

Ways to Work Together

Support is structured to match the level of complexity in your symptoms, your capacity, and what your body needs at this stage.

Begins with weekly support to help create early stability and momentum, before moving into 5 fortnightly 45-minute follow-up sessions for ongoing guidance, accountability, and personalised nutrition support throughout the programme.

Direct 1:1 Support:

Minimum 5 Hours

Begins with weekly support to help stabilise symptoms and reduce overwhelm, before transitioning into ongoing fortnightly sessions across the programme. This includes 6 nutrition-focused follow-up sessions alongside 2 dedicated Compassionate Inquiry (CI) sessions to explore nervous system patterns, stress, and the deeper mind-body relationship influencing symptoms.

Includes a 30-minute review session at 6 months to reflect on progress and longer-term integration.

Direct 1:1 Support:

Minimum 8 Hours

Begins with weekly support to help stabilise symptoms and reduce overwhelm, before transitioning into ongoing sessions across six months. The first four months include 6 nutrition-focused follow-up sessions alongside 2 dedicated Compassionate Inquiry (CI) sessions to support symptom regulation, nervous system stability, and deeper mind-body awareness.

The final stage of the programme transitions more fully into 2 additional Compassionate Inquiry (CI) sessions, allowing more space to explore long-standing stress patterns, emotional holding, nervous system regulation, and the deeper layers connected to physical symptoms over time.

Includes a final 30-minute review session.

Direct 1:1 Support:

Minimum 10 Hours

If you're unsure how much support, guidance, and time your body needs, we'll work that out together.

This Approach Is Right For You If

  • You're tired of trying to figure this out on your own.
  • You're ready for clear direction and changes that actually make sense for your body.
  • You're open to exploring more than just gut health, including stress, lifestyle, and nervous system patterns.
  • You're ready to prioritise your health and feel more confident in your body.

This May Not Be The Right Fit If

  • You're looking for a quick fix or a simple plan to follow.
  • You're mainly looking for checklists, meal plans, or surface-level guidance.
  • You only have the capacity for occasional check-ins rather than ongoing support.
  • You're not in a position to prioritise your health right now.
ix.Quick Q & A

Quick Q & A

That's completely understandable.

Many people with long-standing gut symptoms feel exhausted after trying different diets, supplements, practitioners, or approaches without lasting change.

This work focuses on understanding what may be missing beneath your symptoms, rather than applying another generic solution.

As a registered Nutritional Therapist, I can also recommend advanced testing where appropriate to explore patterns that may not have been looked at in standard care.

Meaningful change often requires the right level of support, clarity, and consistency over time.

The discovery call is a relaxed conversation about what's been happening for you, your symptoms, challenges, and what you've already tried.

It's a space to begin understanding what may be driving your gut symptoms or keeping things from fully improving.

If helpful, I'll share some initial thoughts, explain how I work, and answer any questions you have.

There's 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 would be useful.

Functional testing can provide deeper insight into gut health and digestion when the picture still feels unclear, but it's never used unnecessarily.

The focus is always on what will genuinely support your progress.

A gut health nutritionist supports people with symptoms such as bloating, reflux, IBS, constipation, diarrhoea, or food sensitivities.

This work focuses on understanding what may be driving your digestive symptoms through personalised nutrition, lifestyle support, and functional testing where appropriate.

A personalised approach also considers factors such as stress, routines, nervous system patterns, and the gut-brain connection.

Support evolves over time as your body responds and symptoms begin to settle.

Many people receive general advice, medication, or restrictive diets, but still feel their symptoms are not fully resolving.

Working with a nutritionist allows for a more personalised and detailed approach.

Rather than focusing only on symptom management, we explore the wider picture behind your digestion and overall health.

This creates greater clarity around what may be driving your symptoms and what your body may genuinely need.

Some people do make progress on their own, particularly with supportive dietary and lifestyle changes.

But when symptoms are ongoing, inconsistent, or complex, it can become difficult to know what's actually helping.

Working with a practitioner provides structure, clarity, and ongoing support, rather than relying purely on trial and error.

The process adapts as your body changes, helping progress feel more manageable and sustainable over time.

Your GP plays an important role in diagnosis, investigations, and medical care.

Nutritional therapy offers a different layer of support, with more space to explore digestion, lifestyle, symptoms, stress patterns, and day-to-day factors that may be influencing your health.

The two approaches often work very well together.

Medical care provides oversight and safety, while nutritional therapy offers the depth and ongoing support needed for longer-term digestive improvement.

Not at all.

Most clients work with me online and find it easier to stay consistent that way.

The process remains highly personalised wherever you're based.

We explore your symptoms, health history, and patterns in detail, with ongoing support and adjustments provided throughout the process online.

x.Begin Here

Your Next Step

A quiet, sunlit corner with a linen armchair, ceramic mug and journal on a wooden table

Your gut does not need another quick fix.

Supporting IBS requires a personalised approach built around you, with the right tools, and steady guidance that looks at more than diet alone.

If you are tired of short-term solutions, or of trying to figure this out on your own while symptoms continue to interrupt life, it may be time to explore what real support feels like.

This conversation is for you if you're ready to move beyond simply managing symptoms and start understanding what your body has been asking for.

Book Your Free Clarity Call

Free · 30 minutes · Online

xi.What Happens Next

What Happens Next

01

Once I receive your enquiry, I'll be in touch to arrange your IBS Clarity Call.

02

The call is a structured, supportive conversation to understand your current challenges and what you are hoping to change.

03

We'll talk through your symptoms and what's been keeping you stuck.

04

You'll leave with clear next steps – whether we decide to work together or not.

If you'd like to learn more about me before booking a call, you're welcome to read about my background and the inspiration behind my work, as well as explore detailed client testimonials.

MIND · BODY · BIOME

A calmer, deeper way to understand your body.