What Is the Difference Between a Nutritionist and a Dietitian?
If you are searching for professional nutrition advice in the UK, you may have come across both the terms “nutritionist” and “dietitian” — and wondered what the difference is. This is one of the most common questions we receive at the Raquel Britzke Clinic in London. The answer matters more than you might think, especially when it comes to your health and safety.
The Short Answer
A dietitian is a regulated healthcare professional protected by law. A nutritionist is not a regulated title in the UK — meaning anyone can call themselves a nutritionist, regardless of their qualifications.
What Is a Registered Dietitian?
A registered dietitian is a qualified healthcare professional who has completed an accredited degree in dietetics (typically 3–4 years) and is registered with the Health and Care Professions Council (HCPC). The title “dietitian” is legally protected in the UK under the Health Professions Order 2001.
Only HCPC-registered dietitians can legally use the title. You can verify a dietitian’s registration on the HCPC public register.
Raquel Britzke is a fully registered dietitian (HCPC number: DT28960) and a member of the British Dietetic Association (BDA).
What Can a Dietitian Do?
- Diagnose and treat nutrition-related medical conditions
- Work with eating disorders, including under the NHS
- Prescribe therapeutic diets for conditions such as coeliac disease, kidney disease, diabetes, and IBD
- Work alongside GPs, consultants, and other healthcare professionals
- Conduct clinical research
What Is a Nutritionist?
The title “nutritionist” is not legally protected in the UK. This means that in theory, anyone can call themselves a nutritionist — even without formal training or qualifications. While many nutritionists hold genuine, high-quality qualifications and are members of professional bodies such as the Association for Nutrition (AFN), it is essential to check their credentials carefully.
The AfN maintains a voluntary register of Registered Nutritionists (RNutr) and Associates (ANutr) — but this is not the same level of legal protection as HCPC registration for dietitians.
What Do Nutritionists Typically Do?
- Offer general dietary advice and wellness guidance
- Support healthy eating, weight management, and sports nutrition
- Work in food industry, media, education, and corporate wellness
- They typically cannot treat medical conditions or work in clinical settings without additional qualifications
Key Differences at a Glance
| Dietitian | Nutritionist | |
|---|---|---|
| Title protected by law? | ✅ Yes | ❌ No |
| Regulated by HCPC? | ✅ Yes | ❌ No (voluntary AfN register only) |
| Can treat medical conditions? | ✅ Yes | ⚠️ Limited (no clinical diagnosis) |
| NHS recognised? | ✅ Yes | ❌ No |
| Training required? | ✅ Accredited degree (3–4 years) | ⚠️ Varies widely |
Which Should You See?
If you have a medical condition — such as IBS, coeliac disease, diabetes, kidney disease, eating disorders, or you are pregnant — you should see a registered dietitian. Only a dietitian has the clinical training and regulatory standing to safely advise on therapeutic diets for medical conditions.
If you are looking for general wellness advice, healthy eating tips, or support with optimising sports performance without a medical condition, a qualified nutritionist (ideally one on the AfN register) may be appropriate.
At the Raquel Britzke Clinic, Raquel is both an HCPC-registered dietitian and a registered nutritionist — so she can offer the best of both disciplines, treating medical conditions with clinical precision and providing holistic nutritional support.
How to Check if Your Practitioner Is Qualified
- For dietitians: Check the HCPC register
- For nutritionists: Check the Association for Nutrition directory
- Ask about their qualifications, training, and professional body membership
- Check if they carry professional indemnity insurance
Book an Appointment With a Registered Dietitian in London
Raquel Britzke’s clinic is based at 4 Wimpole Street, London W1G 9SH (Harley Street, Marylebone), open Monday to Saturday, 8am to 8pm. Consultations are available in person and online.
She works with clients on weight management, gut health, sports nutrition, pregnancy and fertility nutrition, eating disorders, and many other conditions — all with the rigour and safety of a clinically trained, HCPC-registered dietitian.
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