Nutritionist: career guide, studies, salary and role
The term nutritionist is everywhere, and often misunderstood. Strictly speaking, in France it refers to a doctor who specialises in nutrition, able to diagnose and prescribe. This career guide clarifies the role, the studies, the salary and the career opportunities, and helps you tell the nutritionist doctor apart from other professionals.
The nutritionist profession in figures
| Entry-level salary | About €3,000 gross per month |
| Experienced salary | €4,000 to €7,000 gross per month |
| Level of study | 10 to 12 years after school (medical doctorate) |
| Training length | 10 to 12 years |
| Status | Doctor (employed or self-employed) |
| Distinguishing feature | The only one entitled to prescribe and diagnose |
What is a nutritionist?
A nutritionist doctor is a medical doctor who has completed their training with a specialism in nutrition. Unlike a dietitian, they can make a diagnosis and prescribe tests and treatments, and manage serious conditions linked to diet: obesity, diabetes, metabolic disorders, undernutrition, allergies.
What a nutritionist does day to day
- Make a medical diagnosis of nutritional disorders.
- Prescribe tests, blood work and treatments where necessary.
- Manage medical conditions: obesity, diabetes, dyslipidaemia, digestive disorders.
- Coordinate the care pathway with other specialists (endocrinologist, gastroenterologist).
- Provide long-term medical follow-up and adjust treatments.
- Carry out prevention and health education work.
Skills and qualities required
- In-depth medical expertise (pathophysiology, metabolism).
- Ability to diagnose and reason clinically.
- Listening and long-term support.
- Constantly keeping up with the science.
- Working in a multidisciplinary team.
How to become a nutritionist: training and career path
Becoming a nutritionist doctor means a long medical course followed by a specialism:
After school, you take the French route into health studies (PASS or L.AS) and then the externship years, 6 years in all to complete the first cycle and the advanced training diploma.
After the residency entrance exam, you specialise in endocrinology, diabetology and nutrition, or in general medicine supplemented by nutrition training.
Additional qualifications: a DESC or a university diploma (DU) in nutrition, covering medical nutritional care in greater depth.
A nutritionist doctor works in a hospital, a clinic or private practice, often under the national health insurance agreement (consultations reimbursed).
What does a nutritionist earn?
€3,000
€5,000
€7,000
As a doctor, a nutritionist earns noticeably more than a dietitian, and their consultations are reimbursed by the French national health insurance (Sécurité sociale) if they work under the agreement. The differences depend on the way of working (hospital, private practice) and on reputation.
Career opportunities and places of work
- Hospitals and specialist departments (endocrinology, diabetology).
- Clinics and obesity centres.
- Private practice, seeing patients.
- Medical research and university teaching.
- Media, expert opinion and health consultancy.
Career progression
A nutritionist doctor can sub-specialise (obesity, clinical nutrition, eating disorders), head a hospital department, move into research or teaching, or build a consultancy activity. Combining medicine with nutrition makes this a sought-after profile.
Nutritionist, dietitian or adviser: who does what?
| Professional | Training | Can prescribe? | Protected title? |
|---|---|---|---|
| Nutritionist doctor | 10 to 12 years (medicine) | Yes | Yes (doctor) |
| Dietitian | 3-year degree (BUT) | No | Yes |
| Nutrition adviser / coach | Varied private courses | No | No |
Frequently asked questions
Is a nutritionist necessarily a doctor?
Strictly speaking, yes: a nutritionist doctor is a medical doctor with a specialism. But as the term is not protected in France, people who are not doctors use it too. Always check the qualification.
Nutritionist or dietitian: who should you see?
For a balanced diet or general food advice, a dietitian is enough. For a medical condition needing diagnosis and treatment, you turn to a nutritionist doctor.
Are consultations reimbursed?
With a nutritionist doctor working under the national health insurance agreement, yes (like any doctor). With a dietitian, generally not, unless covered by certain complementary health insurers (mutuelles).
How many years does it take to become a nutritionist?
Between 10 and 12 years after school, since you must first become a doctor and then specialise in nutrition.
Going further
To compare the routes in, read our guide to nutritionist training: routes and careers, and discover related careers: dietitian, micronutritionist and nutrition adviser.
Also explore our health & prevention guides and our guide to diabetes.
Salary and training figures are indicative (2025) and vary with experience, region and status. This career guide is for information only and is not personalised careers advice. Figures relate to France.