Clare Jeffries BSc (Hons) NT, mBANT, mCNHC, AFMCP
Surrey based specialist in children's health and nutrition
I'm an experienced, highly qualified Registered Nutritional Therapist in Weybridge and Cobham, Surrey (having completed my degree in 2006) with additional training in Functional Medicine. I have helped hundreds of clients, from burnt out city workers to tired mums, parents who are struggling with their child's health or eating behaviours to elderly people with multiple health problems and medications. I'm also mum to two great (mostly!) boys, now 12 and 11 years old, one of whom taught me lots about dealing with a fussy eater & problem sleeper!
I love working with children and teenagers, their honesty and how they always surprise me and sometimes their parents with what they have to say about their health problem or why they are not keen on eating certain foods. My goal is always to gain their trust and get them engaged in the advice I'm giving so they are keen to put it into action! I find most children love to hear about how their bodies work and why what they are eating might be helpful or not helpful, all with a healthy dose of fun & humour! However, I know that some children will not find it easy to make dietary changes and I'm realistic that few families manage to have a perfect diet all of the time including my own family!
I have a particular interest in the following:
I love working with children and teenagers, their honesty and how they always surprise me and sometimes their parents with what they have to say about their health problem or why they are not keen on eating certain foods. My goal is always to gain their trust and get them engaged in the advice I'm giving so they are keen to put it into action! I find most children love to hear about how their bodies work and why what they are eating might be helpful or not helpful, all with a healthy dose of fun & humour! However, I know that some children will not find it easy to make dietary changes and I'm realistic that few families manage to have a perfect diet all of the time including my own family!
I have a particular interest in the following:
- Digestive problems such as Crohn's & IBS in children, along with unexplained tummy aches
- Helping children who seem to pick up illnesses more often than they should or just don't seem to be thriving, become more robust.
- Nutritional impacts on brain function, mood, behaviour and learning. This important area is often overlooked aspect of mental wellbeing.
- I have read extensively on autoimmune triggers, including viruses, infections and disruptions to the delicate gut bacterial balance.
- And at the other end of life, I am also passionate about our ability to maintain a healthy mind and body well into old age and love sharing my knowledge with those who have concerns about dementia or over reliance on medications and are interested in taking a more natural approach to ageing, using diet to help prevent Alzheimer's and poor health.
My Qualifications & Memberships

- BSc (Hons) Nutritional Therapy from the University of Westminster (London, 2006). Final dissertation: Review of the medical literature of fish oil use in Crohn's disease in children.
- AFMCP - Applying Functional Medicine to Clinical Practice (London, 2018)
- Institute Functional Medicine (IFM) - Advanced Practice Modules - Gastrointestinal, Energy, Cardiovascular, Immunity, Hormones (USA, 2019)

- British Association of Applied Nutrition and Lifestyle Medicine (BANT) - Full Member
- Complementary & Natural Healthcare Council (CNHC) - Fully Accredited Practitioner
- Institute of Functional Medicine (IFM) - Full Member
- British Society for Ecological Medicine (BSEM) - Associate Member
Most recent seminars attended or training undertaken:
- The first 1000 days of the microbiome - Optibac Probiotics
- Masterclass: An Holistic paediatrician's Guide immune Support during the Pandemic - Elisa Song MD
- 'Why nutrition is key to Alzheimer's' - Cytoplan & Dr. Bredesen
- 'Thyroid Masterclass' - Invivo Medical & Tanya Bowoski
- 'Feeding the Gut: Health through microbiome modulation' - CAM Conference
- 'Thyroid Paradigm Shift' - Regenerus & Robyn Puglia
- 'Allergy CPD Masterclass' (Coeliac, Milk Allergy, Allergic Rhinitis, Gluten Sensitivity) - The Allergy and Free from Show
- 'Brain Metabolism from Foetus to Senior Citizen' - Presented by Natura Foundation
- 'Do's and Don'ts of Successful Liver Recovery' - Presented by Bonusan
- Creating Happy, Healthy Children' - Higher Nature Academy