About The Gut Health Clinic

Gut Specialist Registered Dietitians

Digestive Health

Sub-specialties: Inflammatory Bowel Disease, Nutrition.

The Gut Health Clinic team are gut specialist registered dietitians and join OneWelbeck to support patients with a wide range of health concerns from diabetes to digestive problems and women’s health.


Bookings: bookings.digestivehealth@onewelbeck.com

Tel: 020 3653 2009

The Gut Health Clinic team are gut specialist registered dietitians and join OneWelbeck to support patients with a wide range of health concerns from diabetes to digestive problems and women’s health.

Areas of Expertise

Our team of experienced adult and paediatric dietitians are all highly specialised in gastro-specific areas. They all have extensive experience in managing irritable bowel syndrome (IBS) and small intestinal bacterial overgrowth (SIBO) as well as troublesome symptoms such as bloating, abdominal pain, reflux, excessive flatulence, constipation, urgency to open bowels and diarrhoea. In addition, they have all had training in the use of the low FODMAP diet in managing IBS if this is indicated.

The team also sees clients with coeliac disease, eosinophilic oesophagitis, gastrointestinal surgery, and cancers including those with complex malabsorption. We have team members who can also support women’s health issues including polycystic ovarian syndrome (PCOS), endometriosis, and fertility nutrition.

We understand that people with gut health issues may also have other conditions and we are qualified to manage these too e.g., diabetes, thyroid disorders, skin issues, allergies. We also have a dietitian who specialises in weight management, helping clients lose weight and achieving non-scale victories such as improved confidence, more energy and better-quality sleep.

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.

Summary of expertise:

  • Irritable Bowel Syndrome
  • Functional Gut Disorders
  • Inflammatory Bowel Disease
  • Coeliac Disease
  • Pancreatic Exocrine Insufficiency
  • Pancreatitis
  • Bile Acid Malabsorption
  • Eosinophilic Oesophagitis
  • Gastroesophageal Reflux Disease
  • Gastritis
  • Diverticular Disease
  • Small Intestinal Bacterial Overgrowth Intolerances
  • Allergies
  • Women’s Health: PCOS, Menopause, Endometriosis
  • Fertility Nutrition
  • Cancer
  • Sports Nutrition
  • Diabetes
  • Thyroid Disorders
  • Skin Issues
  • Nutritional Deficiencies
  • Gut Health Optimisation

About The Gut Health Clinic

Founded by Dr Megan Rossi (PhD, RD), The Gut Health Clinic brings together a team of gut-specialist registered dietitians who have a wealth of experience working with people to become their healthiest, happiest self, using evidence-based strategies.

The team’s unique combination of clinical expertise and research experience ensures that we offer the highest quality of patient care.

You can learn more about each dietitian on the The Gut Health Clinic website.

What does a dietitian do?

Dietitians are the experts when it comes to advising people on nutrition for their health. They are the only qualified and regulated health professionals with the Health Care Professions Council (HCPC) that assess, diagnose, and treat diet and nutritional problems.

As evidence-based practitioners, dietitians take the science and translate it into everyday information in order to advise on a wide range of diseases/conditions, providing education and practical advice that is tailored to the individual.

For information about the difference between a Dietitian, Nutritionist and Nutritional Therapist please take a look at this link

What can a dietitian help with?

  • Digestive issues
  • Medical conditions, such as diabetes, high blood pressure, cardiovascular disease, coeliac, HIV etc
  • Oral, enteral or parenteral nutrition requirements
  • Weight loss in a safe and sensible way
  • Weight gain following ill-health or as the result of a medical condition
  • Improving athletic performance or general fitness levels
  • Suspected allergies or intolerances to foods
  • Eating disorders
  • Fertility nutrition (male and female)
  • Paediatric support e.g., for a child with intolerances, failure to thrive or with specialised nutritional requirements
  • Advice about breastfeeding and weaning

Meet the Team

Jo Cunningham

  • Jo Cunningham is the Clinical Director at The Gut Health Clinic, ensuring the provision of high-quality services for all patients.
  • Jo is a cancer specialist dietitian, as well as experienced in helping clients to resolve gut symptoms including reflux, bloating, constipation, diarrhoea, and abdominal pain. She also specialises in the management of Irritable Bowel Syndrome (IBS) and in the use of the low FODMAP diet.

Lucy Kerrison

  • Lucy Kerrison is a gut specialist dietitian who is passionate about dietary manipulation to reduce debilitating gut symptoms such as reflux, bloating, diarrhoea, constipation and pain. Lucy understands the stresses and hectic nature of modern day life and provides a holistic approach, which is flexible and fun. She will work with you to ensure changes are personalised and realistic within your current and future lifestyles. Lucy has a wealth of experience within busy NHS teaching hospitals, which deal with the most complicated conditions and are at the cutting edge of research and technology.
  • Lucy has extensive experience in the management of a variety of gastrointestinal conditions including IBS, SIBO, IBD, Coeliac disease, as well as rarer conditions such as Eosinophilic Oesophagitis (EoE). She has training in specific diets, such as the low FODMAP diet for IBS, exclusive enteral nutrition and the Lofflex diet for IBD, as well as the six- and four-food elimination diets for EoE. She can also provide advice for PCOS and women’s health.

Anna Pettit

  • Anna has over 12 years of experience working with clients in the NHS and privately in the UK and the Middle East. She is a specialist in the use of the low FODMAP diet in managing IBS and other conditions often accompanied by troublesome symptoms such as reflux, bloating, abdominal pain, excessive flatulence, constipation, urgency to open bowels and diarrhoea.
  • Anna has extensive experience in supporting clients with a range of gastrointestinal conditions including Cow’s Milk Protein Allergy (CMPA), Gastro-oesophageal reflux disease (GORD), Gastritis, Irritable Bowel Syndrome (IBS), Inflammatory Bowel Disease (IBD), Pancreatitis, Exocrine Pancreatic Insufficiency (EPI) and Pancreatic Enzyme Replacement Therapy (PERT), Diverticular Disease and nutrition support in liver disease.

Evelyn Toner

  • Evelyn is a registered dietitian specialising in digestive issues, gut health, and sports nutrition. She has over 12 years’ experience working across the NHS, the private sector, corporate speaking and in the media, having featured on influential platforms such as ITV’s This Morning show.
  • Evelyn is experienced in helping clients optimise their diets to manage food intolerances, resolve gut symptoms such as bloating, constipation, diarrhoea, and irritable bowel syndrome, adapt their diets to manage medical conditions including coeliac disease, Crohn’s Disease, Ulcerative Colitis, and diverticular disease. She is very experienced in supporting clients through the Low FODMAP Diet and SIBO treatment, and helping prepare patients for surgery, and then to recover afterwards.

Lucy Jackman

  • Lucy is a paediatric gut specialist dietitian with in-depth experience in both NHS and private healthcare settings. Lucy has specialist interest in and extensive experience with gastrointestinal food allergy and intolerance. Her expertise also includes faltering growth, gastro-oesophageal reflux disease (GORD), Inflammatory Bowel Disease (IBD) including the use of exclusive enteral nutrition to induce remission. Lucy also has specialist experience with eosinophilic oesophagitis (EoE).
  • She also regularly provides advice for the dietary management of constipation, toddler diarrhoea, coeliac disease offering practical, personal dietary advice and support to parents and children. Lucy is passionate about helping children achieve the best start in life through good nutrition.

Tanzil Miah

  • Tanzil is a gut specialist Dietitian who has a wealth of experience in helping clients with a broad range of conditions, developed through 8+ years of working in various roles. She combines a strong clinical background of managing complex nutritional issues, with a passion for improving her patient’s health, well-being, gut function, and quality of life, through tailored dietary and lifestyle strategies.
  • Tanzil can provide bespoke nutritional advice for those with functional gut symptoms (Irritable Bowel Syndrome (IBS), constipation, bloating, diarrhoea, reflux etc), and is experienced in the use of the low FODMAP diet for the treatment of IBS and Small Intestinal Bacterial Overgrowth (SIBO). She also sees women with Polycystic Ovarian Syndrome (PCOS). Tanzil also specialises in assisting those who have underlying conditions which may affect their gut function including Gastro-oesophageal reflux disease (GORD), Inflammatory Bowel Disease (Crohn’s and Ulcerative Colitis), Coeliac disease, cancers and following surgery.

Josie Porter

  • Josie is a registered dietitian, specialising in weight management, bariatric surgery, type 2 diabetes and women’s health. Josie has a wealth of experience working in some of the top trusts in London, both clinically and in research. She has developed a diverse skill set, learning from leading dietitians, doctors, psychologists and healthcare professionals. Clients can feel confident in her ability to provide nutritional counselling, a thorough assessment and a bespoke care package.
  • In practice, she frequently supports clients in achieving sustainable weight loss (inclusive of all foods and drinks), overcoming binge-eating, optimising the nutritional status of bariatric clients both pre and post-operatively and achieving glycemic control or remission of type 2 diabetes.

Additional Information

Qualifications & Memberships

  • Bachelor of Science Honours (BSc Hons)
  • Master of Science (MSc)
  • Doctorate of Philosophy (PhD)
  • The Health and Care Professions Council (HCPC)
  • The Association of UK Dietitians (BDA)