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Differences between Nutritionist and Dietician

A simple way to grasp the difference between dietitians and nutritionists is to view dietetics as an advanced specialisation within the field of nutrition. Dietitians have additional qualifications that enable them to provide individualized care to patients in clinical environments.

While both career paths aim to help improve people’s overall health, the dietician title is regulated in the UK, unlike that of a nutritionist. Dieticians have historically worked for the NHS or private hospitals, while most nutritionists work in more private settings.

This doesn’t mean that one profession is superior to the other, as they both have different functions and qualifications that might sometimes overlap. If you want to learn more about what makes these professions distinct, keep reading.

Who is a Dietician?

Dieticians are experts who help improve the quality of life through healthy food choices. These licensed healthcare professionals conduct nutrition research, educate about the impact of nutrition on health, administer medical nutrition therapy and recommend nutrition protocols to prevent and manage health conditions. Dieticians receive training in nutrition science, anatomy, physiology, and biochemistry.

They develop counselling skills to support behavioural changes. Some may obtain speciality credentials in sports dietetics, paediatrics nutrition, obesity and weight management, renal nutrition and oncology nutrition.

Dieticians work in various settings, including hospitals, clinics, businesses, industries, long-term care facilities, community/ public health organisations, gyms, educational institutions, government agencies, media, communications, restaurants and private practices.

Examples of conditions dieticians treat with medical nutrition therapy:

Diabetes, heart disease, cancer, obesity, osteoporosis (progressive bone thinning), kidney disease, wound healing, gastrointestinal disorders, eating disorders, and food allergies.

Who is a Nutritionist?

Nutritionist advice about nutrition’s impact on health. They help people adopt healthier ways of eating and create customised plans based on goals. Their services include nutritional assessment and counselling, meal planning and developing healthy eating programs. Although some have formal education and credentials, others may have more basic certifications.

The field is less regulated than dieticians; hence, nutritionists’ levels of expertise and qualifications can vary. A non-credentialed person may not provide medical nutrition therapy (MNT) to treat health concerns through diet and nutrition.

Nutritionists conduct nutrition research, educate about the impact of nutrition on health, administer medical nutrition therapy and recommend nutrition protocols to prevent and manage health conditions. They work in holistic healthcare clinics, doctor’s offices, corporate wellness centres, community and non-profit organisations, and private practices.

Here is a table showing differences between the two professions:

Dietician Nutritionist
Provide Medical Nutrition Therapy Provide more generalised advice
Trained to perform evaluations of nutritional status Trained to provide guidance for weight management
Qualified to treat eating disorders, cancer and diabetes Trained in human psychology and biology
They can treat food allergies Treat weight management without a medical condition
They check individual medical history, lab findings and dietary patterns They work on a more organisational level, not 1-to-1

Similarities between Dieticians and Nutritionists

They provide Healthy Eating and Lifestyle Guidance

The singular goal and similarity between dieticians and nutritionists is their focus on helping you eat healthier. This also means finding the right way of eating for you to improve your health. By providing strategies for healthier food and lifestyle choices, these professionals empower clients to implement sustainable changes. Whether you are an athlete with fitness goals, dealing with a condition, or struggling with nutrition, seeking professional guidance may be beneficial.

Differences between Dieticians and Nutritionists

Regardless of their similarities, when you compare, you’ll find these two professions are different. We’ll draw a comparison between the two under 4 categories:

1.  Training and Educational Background

For both professions, education, training and credentials differ in many ways. There are several differences between dieticians and nutritionists. Here are the training and background specifications.


Dieticians typically hold a bachelor’s degree in dietetics, nutrition, or a related field. As their careers advance, many dieticians pursue advanced degrees, like a Master’s or Doctorate, to specialise in specific areas of nutrition. Dieticians must undertake supervised practical training as part of their education to gain hands-on experience in clinical settings, community nutrition programs, or food service management.

This practical training is crucial for developing the skills to work with diverse populations and address various nutritional needs.

In many countries, accreditation bodies require dieticians to be licensed or registered, and in the UK, that is the Health and Care Professions Council (HCPC). Anyone can call themselves a nutritionist, but only those who have qualifications can call themselves a dietician or a registered dietician nutritionist.


Nutritionists may have diverse educational backgrounds, and the requirements can vary significantly. While some hold degrees in nutrition or related fields, others may have certificates or diplomas from non-degree programs. The title “nutritionist” may not be regulated in some regions, allowing individuals with varying levels of education to use it.

There is training for a nutritionist, such as “Access to HE – Nutritionist and Dietician Courses” which is focused on unlocking access to Higher Education to become a Nutritionist. The course structure will often include metabolism, the biochemistry of food content, and its impact on diet and health. Additionally, Association for Nutrition (AFN) certified courses are the best bet for you if you want to become a nutritionist in the UK.

For example, Futurefit nutritionist courses offer weight management and advanced nutrient metabolism courses. Although these certifications are not mandated, they are tangible proof of a nutritionist’s specialised knowledge and proficiency in a particular domain.

2.  Roles and Responsibilities

Both registered dieticians and certified nutritionists can help you manage weight. Let’s see how they differ in their responsibilities.

Dieticians tasks

Registered dieticians can provide medical nutrition therapy and treatment of diseases through nutritional interventions. They are trained to perform thorough evaluations of an individual’s nutritional status. This involves considering various factors, including medical history, laboratory findings, dietary patterns, and lifestyle elements.

The goal is to pinpoint specific nutritional requirements by analysing these factors. Dieticians can formulate tailored dietary strategies to address nutritional deficiencies or promote overall health through this assessment.

They are qualified to treat medical issues such as eating disorders, cancer and diabetes. A dietician may be the best for weight management if you have a disease or health condition, a history of disordered eating, food allergies, are breastfeeding, are pregnant or planning to become pregnant.

Nutritionists tasks

Nutritionists offer more generalised advice, such as nutrition counselling and meal planning, but cannot provide medical treatment. In the U.K., non-credentialed nutritionists are not allowed to provide meal plans or guidance on health problems; they can only give general nutrition advice.

They are qualified to provide education and guidance for weight management because they have been trained in science and applications of food and nutrition, as well as human physiology and biology.

A nutritionist may be good for weight management if you do not have a medical condition, are looking for advice for healthier meals and snacks, are in good health but want to improve health and wellness, and want a coach for support and accountability for weight and health goals.

Registered dieticians may be called registered dietician nutritionists (RDN), Registered Dieticians (RD), or similar titles. This can be confusing, especially as the terms are used interchangeably, and there are distinctions between these two careers in nutrition. However, you must note that all registered dieticians are nutritionists, but not all nutritionists are registered dieticians.


In many countries like the UK, the term “dietician” is legally protected, and individuals must meet specific educational and experiential criteria to use this title. Licensing boards or regulatory bodies oversee the adherence to these standards, ensuring that dieticians meet a predetermined level of education and training. To call yourself a dietician in the UK, you have to be registered with the HCPC, and to be registered, you have to have all the qualifications required.


Some associations, like the British Dietetic Association (BDA), provide a platform for networking and knowledge exchange and set ethical standards and guidelines for practice. Joining such associations is often considered a mark of professional commitment and engagement.


The term “nutritionist” is not legally protected in the UK. This lack of regulation can result in various educational backgrounds and qualifications among individuals using the title. This is why registering with the UK Voluntary Register of Nutritionists to prove your authenticity is a good play.


Joining professional associations is voluntary, and membership is not as standardised or regulated as in the case of dieticians. These associations offer networking opportunities and resources but might not enforce standards and guidelines for practice.


Wrapping It Up

If you are considering one of these professions, you must check all the required qualifications. Also, even though dieticians mostly work in hospitals, they are not superior to nutritionists.