Dietitian

Dietitians treat medical problems with food and feeding. That covers a baby with a milk allergy, a man losing weight because of lung disease, someone whose kidneys can no longer clear potassium, and a patient being fed through a tube. The title is protected in law, and that is the line between a dietitian and a nutritionist or a coach: only a dietitian is qualified to work with people who are ill.

What the job actually involves

Take a full account of what someone eats and drinks, then check it against their bloods, weight and diagnosis.
Write a plan the person can follow in their actual kitchen, on their actual budget.
Work out and prescribe tube feeds and supplements, including for people who cannot eat at all.
Adjust plans as results change, which for kidney and liver patients can mean every week.
Explain a restriction clearly enough that a family can shop with it, without turning food into a source of fear.
Train nurses, care home staff and doctors to spot malnutrition before it gets serious.
Work with speech and language therapists on modified diets for people who are choking on ordinary food.
Keep records that show exactly what was advised, because diet advice does damage when it is misremembered.

On a normal day

A ward round where you raise a feeding tube nobody else wants to bring up with the family.
A clinic where a fifteen year old with coeliac disease tells you what she really ate at her friend's house.
Twenty minutes reading a food diary before noticing that the only thing missing from it is breakfast.
A call to a care home about a resident who has lost four kilos that nobody recorded.
Writing a method on the back of the clinic letter, because the printed leaflet assumes an oven that works.

What it is actually like

Reading about a job only gets you so far. Career Lab drops you into one real situation from it: Support Ray with unexpected weight loss. Ray has lost six kilograms since Christmas. Staff at his GP surgery congratulated him, but his lung condition means he may be using more energy than he gets from food.

You respond to the situation, then see what the work asked of you and what your choices changed.

Try being a dietitian

Pay and hours

Starting: £32,000 a year
Typical: £40,000 a year
Experienced: £48,000 a year

Source: National Careers Service (dietitian profile). The service publishes a starter and an experienced figure and no median, so the median here is the midpoint of that band., checked 2026-07-29.

Usually 37 to 40 hours a week, regular pattern.

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Skills that matter

Asking about food without judging. People edit what they eat when they feel judged, and a plan built on an edited answer is worth nothing.
Numbers. Feeds, fluids, protein and electrolytes are all calculated, and an error in a tube feed goes straight into a person who cannot object.
Turning science into a shopping list. The advice is only as good as the version somebody can carry out on a Tuesday night after work.
Reading the chart. Bloods, weights and drug lists change the answer, so the plan follows the medicine rather than a general idea of eating well.
Holding your position. You are often the only person in the room saying a patient is not being fed enough, and that has to be said clearly to people senior to you.
Working with the family. Whoever cooks is usually not the patient, so the plan has to convince someone who was never in the appointment.
Knowing the limits of food. Some problems are not diet problems, and passing someone to a doctor or a psychologist is part of doing this job properly.

How people get in

University (Degree). An approved BSc in dietetics, with placements in hospital and community services. You join the HCPC register on qualifying, which is what lets you practise. Usually 3 to 4 years.
University (Postgraduate). A postgraduate diploma or masters in dietetics for graduates whose first degree was in a biological science, ending at the same registration. Usually 2 years.
Apprenticeship (Level 6). The dietitian degree apprenticeship is paid and is usually taken by dietetic assistants already employed by a service. Usually 3 to 4 years.
Working towards this role (Level 3). Dietetic assistant and healthcare assistant posts are a common way in, and some employers will back the apprenticeship once you are established. Usually 1 to 2 years.

Experience that helps

Courses want evidence that you understand the difference between dietetics and general nutrition advice, so a conversation with a working dietitian and some time in a healthcare setting both help. Catering, care work and healthcare assistant posts all count. So does anything that puts you in front of people who are unwell rather than people training for a marathon.

Who employs dietitians

NHS hospital trusts
Community health teams and GP practices
Care homes and home tube feeding services
Public health teams and councils
Food manufacturers and supermarkets
Sports institutes and private clinics

Where the work happens

Hospital wards and outpatient clinics, GP surgeries, community teams, care homes and people's houses, with a growing share of appointments done by video. Some dietitians work in the food industry, in sport, in prisons or in public health instead. Weekday hours are the norm, with a small amount of weekend cover in acute services.

Where it leads

Specialist posts in kidney, cancer, intensive care, paediatric, diabetes or eating disorder services.
Advanced practice, which can include supplementary prescribing.
Team lead, then head of dietetics for a hospital trust.
Public health, food policy or industry work, including product development.
Freelance practice, teaching or research.

Common questions

What is the difference between a dietitian and a nutritionist?

Dietitian is a protected title. You can only use it after an approved qualification and a place on the HCPC register, and it is the only one of the two that is qualified to treat people who are ill, including in hospital. Nutritionist is not protected in the same way, so the training behind it varies enormously. Registered nutritionists work mainly in public health, industry and sport.

Do I need chemistry or biology?

Almost always. The degree is built on human biology and biochemistry, so most courses ask for biology or chemistry at A level, sometimes accepting another science alongside. GCSE maths matters more than people expect, because a large part of the clinical work is calculation and you cannot be slow or shaky at it.

Is the job mostly about weight loss?

No, and that is the biggest misunderstanding about it. A lot of a hospital dietitian's caseload is people who are losing weight and need to gain it, through cancer, dementia, lung disease or recovery from surgery. Allergy, kidney disease, diabetes and tube feeding take up most of the rest. Weight management is one part of the field rather than the shape of it.

Can I do this job if I have had an eating disorder?

Yes, and plenty of people in the profession have. Universities and employers deal with it through occupational health rather than as a test, and the usual expectation is that you are recovered, stable and have support in place. It is worth working out which specialisms would be hard for you and saying so early, rather than discovering it halfway through a placement.

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