About me
Persistent digestive symptoms aren't simply a gut issue. They're often a nervous system issue that shows up in the gut.
I'm Amanda Callenberg, a Registered Nutritional Therapist and founder of Mind. Body. Biome. I specialise in persistent and complex digestive symptoms, particularly where conventional nutritional approaches haven't provided lasting relief.
Over the past eight years, my clinical work has evolved towards a deeper understanding of the relationship between the gut, brain and nervous system, and how our experiences, emotional patterns and responses to stress can influence digestive health.
My approach combines nutritional therapy and gut health expertise with nervous system support and a trauma-informed, somatic perspective. I've undertaken more than 400 hours of training in Dr Gabor Maté's Compassionate Inquiry approach, which has significantly shaped how I listen, understand and work with clients.
I don't just look at what they're eating or the symptoms they're experiencing. I explore what's happening in their lives, what they've been through, how they've learned to cope, and the patterns they may not even realise they're carrying. Because understanding what's keeping their body struggling means looking beyond the gut itself.
This deeper understanding of someone, including how their nervous system contributes to digestive symptoms, allows me to offer more personalised support. It also helps me make better decisions about nutritional interventions, functional testing and supplements: what's needed, when to introduce them, and how to support their body without adding to the demands already placed upon it.
I work with a small number of clients through longer-term, personalised 1:1 programmes, allowing space for both practical nutritional support and deeper mind-body work.
Alongside my clinical practice, I offer mentorship for qualified nutritional therapists who want to develop greater relational understanding, therapeutic presence and self-awareness in their work.
Training, qualifications & experience
I qualified as a Nutritional Therapist from the College of Naturopathic Medicine in 2017 and am a Registered Member of BANT (British Association for Nutrition and Lifestyle Medicine) and the CNHC (Complementary and Natural Healthcare Council). I work in accordance with their professional standards, code of ethics, and continuing professional development requirements.
My training is grounded in functional and naturopathic nutrition and covers digestive health, hormone balance, immune function, blood sugar regulation, nutrient status, inflammation, detoxification pathways, and nervous system regulation. This allows for a whole-systems, root-cause approach to care.
I specialise in supporting chronic and complex digestive conditions, including IBS, SIBO, bloating, reflux, food sensitivities, histamine reactions, dysbiosis, and inflammatory gut conditions. Many clients I work with experience symptoms that are long-standing, stress-responsive, or have not fully resolved with standard dietary or medical approaches.
Alongside nutritional therapy, I have completed over 400 hours of professional training in Compassionate Inquiry and somatic, trauma-informed approaches. This informs a nervous-system-aware way of working, particularly where stress and physiological load influence digestive symptoms.
- Diploma in Nutritional Therapy, College of Naturopathic Medicine (CNM)
- Registered Member of BANT and CNHC
- Somatic Counsellor ACCPH
- Certificate of Attendance in Compassionate Inquiry (Gabor Maté's body-based psychotherapeutic model)
- Ongoing CPD in gut health, hormone balance, and nervous system support
Member organisations
The CNHC encompasses many types of alternative therapy, including massage, aromatherapy and nutrition. In order to be admitted to the register a practitioner must have studied to the National Occupational Standards for that profession/discipline, or have reached the equivalent of the National Occupational Standards through other relevant training or at least three years of experience and been assessed by their peers. A practitioner must also have professional insurance and agree to abide by the CNHC Code of Conduct, Performance and Ethics.
The British Association for Applied Nutrition and Nutritional Therapy is the professional body for Nutritional Therapists. There are different BANT membership classes, including Full Member, Fellow Member and Student Member. All BANT practitioners must have met the required standards of training, be fully insured and adhere to the BANT Code of Ethics and Practice.
Accredited register membership
The Accredited Register Scheme was set up in 2013 by the Department of Health (DoH) as a way to recognise organisations that hold voluntary registers which meet certain standards. These standards are set by the Professional Standards Authority (PSA).
This therapist has indicated that they belong to an Accredited Register.
Nutrition topics
info Information about health conditions (*)
Nutritional therapy can help enhance the well-being of individuals diagnosed with serious medical conditions, but should not take the place of medical treatment and advice. If you have been diagnosed with - or suspect you may have - any of these conditions, please speak to your doctor before starting nutritional therapy or making any major changes to your diet or lifestyle.
Fees
Free initial online session
Additional information
I don't offer standalone consultations. My work is structured around longer-term, personalised programmes, allowing the time, continuity and depth of support needed for persistent or complex digestive health concerns.
Programmes start from £1,300 with an associate practitioner. For clients wishing to work directly with me, programmes start from £1,800.
I offer a free 30-minute discovery call to explore what you're experiencing, explain how I work and consider whether my approach is a good fit.
Full programme details and transparent pricing are available on my website, with no pressure to commit.
When I work
| Mon | Tue | Wed | Thu | Fri | Sat | Sun | |
|---|---|---|---|---|---|---|---|
| Early morning | |||||||
| Morning | |||||||
| Early afternoon | |||||||
| Late afternoon | |||||||
| Evening |
Further information
I am best known for working with people whose gut symptoms are persistent, stress-responsive, or feel “stuck” despite doing all the right things. My approach is nervous-system-aware and focuses on steadiness, safety, and sustainable change rather than restrictive diets or aggressive protocols.
I work particularly well with clients who feel anxious around food or symptoms, who have lost trust in their body, or who sense their digestive issues are influenced by long-term stress or health experiences. Sessions are paced, collaborative, and tailored to the individual, with an emphasis on building consistency and resilience over time.
