Welcome to

We are a team of gut-specialist registered dietitians who not only work at the forefront of gut health research at King’s College London, but have a wealth of experience helping people get their tract back on track. We’re here to help you become your healthiest, happiest self, by empowering you with practical and easy-to-digest, evidence-based advice and support.


Clinical Expertise

Optimising Gut Health

Boosting the health of our gut is one of the most effective ways to enhance our overall health and wellbeing.

Digestive symptoms

Whether it’s an occasional inconvenience or a debilitating daily occurrence, don’t put up with your symptoms.

Food intolerances

There is no denying that food intolerances can be confusing to navigate, which is why the medical guidelines recommend seeing a dietitian.


SIBO (small intestinal bacterial overgrowth) is characterised by an increased number of microbes invading the small intestine…

Coeliac Disease

An autoimmune condition whereby your immune system attacks the gut when exposed to gluten, affecting 1 in 100 people.

Irritable Bowel Syndrome

Symptoms often include abdominal pain, bloating, diarrhoea and constipation. There are several dietary strategies…


A treatment option for people with IBS symptoms, through phases of exclusion for FODMAP foods closely guided by a dietitian.


Our experienced paediatric dietitian is qualified to provide advice on common problems such as diarrhoea, constipation, gastroesophageal reflux, and fussy eating as well as food intolerances, sensitivities allergies, and coeliac disease.


Helping you manage treatment side effects and optimise your nutritional status to support your immune system during and after reatment.

Women’s health

Our dietitians can provide bespoke nutrition advice for a range of women’s health conditions including PCOS, (polycystic ovarian syndrome), the menopause, endometriosis as well as before, during and after pregnancy.

Sports Nutrition

Getting your nutrition and hydration strategies right for your sport can help improve every aspect of your performance and health.

Other gut issues

We understand that people with gut health issues may also have other conditions and we are qualified to manage these too e.g. diabetes, allergies, weight issues etc.

Give the gift of gut health

Is your friend or family member struggling with gut symptoms? Treat them to a gift voucher for a consultation (or a course of appointments) at The Gut Health Clinic, so you can give your loved ones a personal gift to help them get their guts back on track and transform their overall health and happiness.

Our Team

Meet our team of registered dietitians and find out more about their specialist areas, from optimising general gut health to specific and more complex conditions.

Anna Pettit

Specialist areas: Food allergy & intolerances, bloating, constipation, diarrhoea, IBS and low FODMAP diet, SIBO, IBD, GORD, gastritis, pancreatitis, diverticular disease, liver disease. Women’s Health: PCOS, endometriosis, fertility & pregnancy nutrition.

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Evelyn Toner

Specialist areas: Food intolerances, bloating, constipation, diarrhoea, IBS and low FODMAP diet, coeliac disease, Crohn’s disease, Ulcerative Colitis, diverticular disease, surgery preparation, small intestinal bacterial overgrowth (SIBO). Sports: athletic performance, recovery and injury, optimising body composition.

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Tanzil Miah

Specialist areas: IBS and the low FODMAP diet, Crohn’s Disease, Ulcerative Colitis, Coeliac Disease, Cancers (including pancreatic, bowel, and gynaecological cancers), nutrition following gut surgery (including stomas) and Polycystic Ovarian Syndrome (PCOS).

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Lucy Jackman

Specialist areas: Paediatric gut health, child food allergy & intolerance, faltering growth, gastro-oesophageal reflux disease (GORD), infant Inflammatory Bowel Disease, eosinophilic oesophagitis (EoE), constipation, toddler diarrhoea, coeliac disease and nutritional deficiencies.

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Lucy Kerrison

Specialist areas: Bloating, diarrhoea, constipation, IBS, low FODMAP diet, small intestinal bacterial overgrowth (SIBO), IBD, coeliac disease, eosinophilic oesophagitis (EoE).

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Dr Megan Rossi


Dr Megan Rossi, The Gut Health Doctor, is considered one the most influential gut health specialists internationally. A practicing Dietitian and Nutritionist for the last decade and with an award-winning PhD in gut health, Dr Rossi is passionate about empowering others to take control of their health and happiness from the inside out.

Bringing together a team of gut-specialist registered dietitians, Megan founded The Gut Health Clinic in London to make an evidence-based approach more accessible and get people’s guts back on track. Passionate about making a meaningful difference in people’s lives, Megan is also a member of the IBS Network Expert Advisory Board and Bowel & Cancer Research UK Research Grants Committee.

What Our Clients Say

Whether you are struggling with gut symptoms or just want to maximise your gut health, get in touch to find out how we can help you achieve your goals using the latest research and an evidence-based approach.

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