Personalised & Preventative Nutrition

Clarissa Lenherr is a Registered Nutritionist (mBANT) in London who has helped hundreds of clients and employees optimise their health and get to the root cause of their concerns through personalised nutrition.

In Clarissa's practice, she uses individualised food, lifestyle and supplements recommendations alongside functional testing where relevant.

Clarissa offers private nutrition appointments in her clinic on Harley Street, London or via digital appointments.


Weight Management

Weight loss isn't as simple as following a fad diet or one sized fits all approach, Clarissa will work with you to understand your health history, relationship with food, underlying mediators and lifestyle to create a personalised diet for your goals.

Autoimmune Conditions

Thousands of the UK population are living with autoimmune disease symptoms, and have their quality of everyday life severely impaired. My unique approach is to uncover the root causes and restore immune system health through diet and lifestyle

Digestive Health

"All disease begins in the gut" Hippocrates.

Clarissa is deeply passionate about the importance of digestive health and works with clients on concerns including IBD, Intolerances, SIBO, Leaky Gut, IBS and Coeliac Disease.

Pre-Pregnancy Nutrition
Thyroid Health
Specialist Diets

Your journey will start with a 1 initial consultation where we will get to know each other, understand what you are trying to achieve and delve deep into your health history.

Prior to your consultation, you will be required to complete a health questionnaire and a 3-day food diary to ensure our time together can be utilised effectively.

Following all initial consultations, you will receive explanations of dietary and lifestyle factors that may be contributing to any symptoms along with a personalised nutrition and lifestyle programme.

Work on your health with a registered nutritionist in London, Clarissa Lenherr, who offers specialised nutrition packages which can be tailored according to your requirements:

  • Basic Starter Nutrition - Initial Consultation & 2 Follow-Ups
  • Thyroid Health Management - Initial Consultation & 3 Follow-Ups
  • Digestive Health - Initial Consultation & 2 Follow-Ups
  • Weight Loss - Initial Consultation, 3 Follow-Ups & Weekly Check-ins

In some cases, I may refer you for further testing. These can be administered in the comfort of your own home or in partner UK wide clinics by a qualified nurse.

Specific tests include:

  • Comprehensive Blood Count
  • Allergies & Intolerances
  • Well Man/ Well Woman Test
  • Liver and Kidney Checks
  • B12 and Anaemia
  • Glucose Tolerance and Insulin Resistance
  • Comprehensive Digestive Stool Analysis Test incl SIBO
  • Thyroid profile
  • Adrenal profile


W. Peters

"Fantastic nutritional therapist that I would recommend to all of my friends and family. I saw Clarissa in 2020 for an initial consultation and two follow up appointments to help me with a load of goals (building muscle, losing fat, reducing tiredness etc.) and the results have been amazing. Not only did she supply me with a bespoke nutrition guide and sample week plan, she made the plan realistic and made sure I was comfortable with every aspect of it before setting me off on my own. The best thing about my work with Clarissa is that it's a long term investment - she's changed my way of living and my knowledge of nutrition rather than helping put together a quick fix diet. 100% would recommend!"

M. Marten
"Clarissa has a very good understanding of nutrition and really took the time to identify some of the issues with my digestive system and eating habits. She has a number of tests done (e.g. blood work) which allowed her to create a very tailored plan for me. I would highly recommend her and I look forward to a check up in a few years time."
J. Underhill

"I approached Clarissa as I was experiencing some issues which I felt could potentially be treated though food and lifestyle changes.  Clarissa clearly explained what Nutritional Therapy entailed and the process that we would go through to identify and treat my issues.  After a thorough review, Clarissa recommended a test which confirmed the cause of my issues.  She then developed and carefully explained a treatment plan which proved to be very successful.  I very quickly began to see positive results.  Her recommendations were also sustainable, enabling me to live a healthier lifestyle.  Clarissa was contactable throughout the process and responded incredibly quickly when I had questions or concerns.   She was also incredibly supportive and I’m very grateful to Clarissa for all of her advice and guidance on my journey to full health."

Get in touch with Clarissa!

Stay Informed

For the latest news, recipes, events and expert advice, sign up today.