Clarissa Lenherr is a Registered Nutritionist (mBANT) and Nutritional Therapy Practitioner practising on Harley Street, London. In her practice, she focuses on personalised, predictive, preventative and participatory nutrition so that you can reach optimal health.

Incorporating the most up-to-date scientific research, Clarissa uses the functional medicine model, helping clients overcome a myriad of health problems to achieve long-term wellbeing.

Specialising in Digestive Health, Weight Management, Auto-Immune conditions, Thyroid health, Stress and General Health and Energy Balance, she practices from 39 Harley Street, London and offers online consultations.


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Wondering whether working with a nutritionist is right for you? Our world has become a minefield of conflicting, contradictory and often confusing evidence about what to and what not to consume, how much to exercise, what diet to follow and the ‘it’ fad diet promise of that week. 




Rather than sifting through Dr. Internet and trying out the latest diet trend, a Nutritionist can provide you with a personalised nutrition plan, tailored to your physical, mental and emotional needs. 

When people think about the food they eat, they often see it as simply supplying their body with energy or for a pleasure platform. Yet, food really is so much more than this; it gives our body the tools it needs to thrive in the way it is designed. When we break it down into its constituents, food interacts with our body on a biochemical level. Nutrients delivered from the food we consume allow our organs and body systems to communicate and work synergistically. On the other hand, they can also hinder the fundamental processes in our body, leading to imbalances and disease.




Nutritional therapy focuses on using food, botanical supplements and lifestyle habits to help support your health and for each person, their journey will be completely unique.

Clarissa Lenherr, Registered Nutritionist can assist with:

    • Digestive Health: IBD, IBS, Bloating, Coeliac, allergies, intolerances
    • Auto-immune conditions: including Rheumatoid Arthritis, Multiple Sclerosis, Hashimoto’s Disease, Graves Disease
    • Weight Management: healthy weight gain, sustainable weight loss
    • Thyroid Health: hyperthyroidism, hypothyroidism, Graves Disease and Hashimotos Thyroiditis
    • Fertility & Pregnancy – Clarissa has gained an extra accreditation in Food for Fertility and Pregnancy with Monash University
    • Cardiovascular Support: cholesterol, high blood pressure
    • Skin: Eczema, Urticaria and Acne
    • Immune System Support
    • Stress Management and Chronic Fatigue
    • Histamine Intolerance
    • Anaemia

Visit my consultations page for more information





Registered Nutritionist London

Clarissa Lenherr (BA-HONS, DIP-NT, mBANT, mCNHC) is a registered nutritionist in London, specialising in weight management, gut health, autoimmune conditions and thyroid health.

Having graduated from The College of Naturopathic Medicine in Nutritional Therpay. She is also a member of BANT (The British Association of Nutritional Therapists) and the CNHC (Complementary and Natural Health Care Council). Continuous training and further learning courses enable Clarissa to gain increased expertise, ensuring she is abreast of new findings and developments in the captivating scientific field of nutrition.


Having spent half a decade working in the corporate world of property marketing, Clarissa swapped the daily grind for the clinic and turned a lifelong passion for healthy eating into a career.

Studying Nutritional Therapy part-time whilst working as a Marketing Manager, Clarissa is well practised at juggling her time and since leaving the marketing world splits her days between seeing clients, consulting for brands, hosting workplace workshops and writing on all things health and wellbeing.

Clarissa is passionate about educating people to discover and celebrate nutritious food, enabling clients to utilise and benefit from food and lifestyle choices in order to reach their optimum state of wellbeing. Clarissa practices personalised nutrition, advocating the “no one size fits all” approach. With this in mind, she works closely with clients to implement personalised nutritional strategies which fit into each client's unique lifestyles and goals.


Clarissa is also a part-time contributor to several publications and offers commentary to some of the UK's leading publications such as Red Magazine, The Daily Mail, Women's Health and The Telegraph offering nutrition and fitness advice.

Clarissa is also proud to work with great health brands as an ambassador, nutrition consultant and in-house nutritionist, including  Bioniq personalised health care supplements, Vita CocoVejo and Silver Linings Retreats.

She loves to spend her time travelling, experimenting in the kitchen, trying out new fitness classes, exploring international cuisines and investigating the aisles of grocery stores.


Clarissa is continually updating her knowledge, and ensures she is up to date with the most recent scientific findings and literature. She has completed over 160 hours of CDP learning and has completed an extra learning accreditation from Monash University in Food as Medicine: Fertility and Pregnancy.

CNHC Registered Nutritionist

Bant Registered Nutritionist

Monash University - Nutritionist London


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