Amanda Callenberg

IBS & Complex Gut Health Nutritionist





Deeper support for women with persistent gut symptoms

4.9 ⭐⭐⭐⭐⭐ Google Rated

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BANT Registered Nutritional Therapist · CNHC Accredited · Somatic Counsellor (ACCPH) · Mind-Body-Biome™ Method

Expert in IBS and complex digestive health, with a focus on the gut–brain relationship and nervous system regulation. Integrating personalised nutrition, somatic approaches and Compassionate Inquiry.

When gut symptoms keep returning, it’s rarely just about food

You may have already tried dietary changes, supplements or medical treatments, yet continue to experience IBS, bloating, reflux or other persistent symptoms.

When symptoms return, shift or feel unpredictable, understanding what's contributing to them means looking beyond food alone.

This includes what's happening in your digestion, your nervous system and your life.

Hi, I’m Amanda

I’m an Australian born, London-based IBS and Gut Health Nutritionist, Registered Nutritional Therapist (BANT, CNHC) and Somatic Counsellor (ACCPH).

With nearly ten years in nutritional practice, I specialise in IBS and complex digestive health, particularly the relationship between the gut, brain and nervous system. My approach brings together personalised nutritional therapy, functional medicine, nervous-system-informed care, somatic approaches and Compassionate Inquiry.

I work with people whose digestive symptoms have persisted despite dietary changes, supplements or other interventions, exploring both the physical aspects of digestive health and the wider influence of stress, coping patterns and past experiences.

Areas of Focus

Complex Digestive Health & IBS · Gut–Brain Interaction · Nervous System Regulation · Stress & Emotional Wellbeing · Hormonal Health · Persistent & Unexplained Symptoms

My Approach

Personalised Nutritional Therapy · Functional Testing · Somatic Counselling · Compassionate Inquiry · Trauma-Informed Practice


MIND - BODY - BIOME


SEE THE PERSON - NOT THE PARTS

Within my 1:1 online clinic, I specialise in helping people living with persistent digestive symptoms, especially those whose issues flare with stress, feel unpredictable, or haven’t improved through conventional routes.

My Mind Body Biome method brings together:

Personalised nutrition - rooted in functional medicine and naturopathic principles.

Compassionate Inquiry – exploring emotional responses, coping patterns and the influence of past experiences through a psychologically informed, relational approach.

Trauma-Informed Care – prioritising safety, trust, choice and individual pacing throughout our work together.

Somatic Counselling – developing awareness of bodily sensations and nervous system responses, with an emphasis on regulation and stability.

Functional testing (if required) - GI360, SIBO test, DUTCH, blood panels.

This combination of approaches helps us understand your symptoms in the context of your physical health, nervous system, emotional responses and life experiences, rather than treating each in isolation.

Through personalised, multi-month 1:1 programmes, we combine practical nutritional support with deeper exploration of the patterns influencing your health. The work evolves as we learn more about you, with regular sessions and ongoing guidance tailored to your needs.

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When This Approach is a Good Fit

Some people come to me early, looking for personalised nutritional guidance before symptoms become more entrenched. Others arrive after years of persistent digestive issues, having tried diets, medications or other interventions with limited or temporary relief.

Not everyone needs or wants the same depth of work. Some benefit from predominantly nutritional support, while others are ready to explore how their physical health, nervous system, emotional responses, coping patterns and past experiences intersect. The direction and depth of our work are always shaped by the individual.

 
 

This work is individually paced and high-touch, offering a level of contact and depth that goes significantly further than one-off consultations or standard nutrition and dietetic programmes. Depending on programme length, clients receive a minimum of 7–15 hours of direct 1:1 time, with ongoing support between sessions.

If You Prefer A Quieter Starting Point

Your digestive symptoms may be influenced by more than food alone. Sleep, stress, emotional responses and nervous system patterns can all play a role.

This short quiz explores your digestion, energy, stress and daily experiences to help you reflect on what may be contributing to your symptoms.

• 14 multiple choice questions • 2-3 minutes •
• NO EMAIL REQUIRED •

Beyond the Diagnosis

People come to me with a range of digestive concerns, including IBS, SIBO, IBD, reflux, bloating, constipation, diarrhoea, food sensitivities and histamine reactions. Many also experience overlapping concerns such as fatigue, hormonal imbalances, thyroid issues or poor sleep.

While a diagnosis can be useful, it doesn't tell us everything about the person experiencing those symptoms. Understanding persistent health issues means looking at the wider picture, including digestive function, nutritional status, nervous system responses and the circumstances of someone's life.

Explore IBS, SIBO, bloating, reflux, and some of the other conditions and related health concerns I support below.

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Trusted by clients with long-standing digestive symptoms, fatigue and other persistent health issues that have been difficult to resolve.

“From the very first session, I felt completely comfortable and understood.”
Manny · Google Review ⭐⭐⭐⭐⭐

“Nothing was ever a rush and yet we achieved so much.”
Emma · Google Review ⭐⭐⭐⭐⭐

“Within our first couple of weeks I saw a massive difference and started to feel better.”
Martina · Google Review ⭐⭐⭐⭐⭐

“I had suffered debilitating symptoms since childhood which I now barely suffer at all.”
Emma · Google Review ⭐⭐⭐⭐⭐

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As Seen In

Articles that explore gut health, the nervous system, and the deeper patterns behind ongoing symptoms can be found here.

Quoted in The Independent
I was recently quoted in The Independent contributing to wider conversations on gut health, highlighting the limitations of product-led approaches and the role of stress and nervous system state in digestion.
Read the article →
Quoted in The Times
I was recently quoted in The Times, contributing to an evidence-based feature exploring which of honey's many health claims stand up to scrutiny.
Read the article →
Invited Contributor to Life Science Daily News
I was invited to contribute to Life Science Daily News, writing about the challenge of translating microbiome research into meaningful patient care.
Read the article →

Work With Me

Press - for articles, interviews, and professional collaboration.

Mind-Body-Biome - to explore my signature 1:1 method for lasting gut health.

Mentorship - for practitioners who want to become more attuned, embodied, and effective in their work.

Please Note - My work is intentionally 1:1 and not offered in corporate or group formats.