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About me

I am a degree qualified Registered Nutritional Therapist (BSc Nutritional Science, First Class Hons) and health coach, offering personalised 1-2-1 consultations and group workshops.  As a competitive runner and GB-age group long-distance triathlete, I have a specific interest in sports and performance nutrition adopting a functional (holistic) approach.

I am passionate about empowering my clients to make long term dietary and lifestyle changes through education and support, helping them understand the impact that their diet and lifestyle has on their health and performance.  I work within the 'functional medicine model' which means I will look at your body holistically, including genetics, environment and lifestyle to reach the root cause of your symptoms.

As well as offering tailored-performance consultations and packages for athletes, I work along side other clients to support them with long-term weight loss, blood sugar management, chronic gut complaints, auto-immune conditions, hormonal imbalances and unexplained fatigue.  Regular support outside consultations via zoom/phone/email is an integral part of any package alongside behavioural coaching to help change long-term ingrained habits where necessary.

I can see clients in both London and Hertfordshire face-to-face but am currently working mostly via Zoom which allows me to work with clients anywhere in the world.   I work frequently alongside consultants and GP's where appropriate to ensure the best care possible for you.

Please email me to arrange a complimentary 15 minute call to chat to about your health goals and how I can help you.

Training, qualifications & experience

  • BSc Hons (First Class) Nutritional Science (CNELM accredited by Middlesex University)
  • Nutritional Therapy Practise Diploma (certified NTEC)
  • NLP Certified Coach
  • BA Hons Economics (Newcastle University)
  • Registered with both the British Association for Nutrition and Lifestyle Medicine (BANT) and the Complimentary and Natural Health Care Council (CNHC).
  • Associate Member of the Royal Society of Medicine
  • Additional training in Eating Disorders with the National Centre for Eating Disorders along with other regular CPD in this area.
  • Additional training in Integrative Cancer Support (6 months training).
  • Lectures on Gastro-intestinal Dysfunction and Testing in Endurance Athletes with the Centre for Integrated Sport and Nutrition.
  • Previous career Private Client Investment Manager at JP Morgan.
  • Royal London Medical College - 1989-1990.

Member organisations


British Association for Applied Nutrition and Nutritional Therapy

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.


Complementary and Natural Healthcare Council

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.

Accredited register membership

Complementary and Natural Healthcare Council

Accredited Register Scheme

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

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.


Additional information

Please see my website for details on packages offered or contact me directly by email as above.

St. Albans


Type of session

In person
Home visits


Katherine Caris-Harris, BSc (Hon), BA (Hon.), mBANT, mCNHC, NLP.

Katherine Caris-Harris, BSc (Hon), BA (Hon.), mBANT, mCNHC, NLP.