Anorexia nervosa: what it is, signs and how it is treated

What is anorexia nervosa?

Anorexia nervosa can persistently affect eating and the way a person perceives their own body. Fear of gaining weight can take up much of the day [2]. It is not a choice [2], nor a matter of willpower or appearance.

It can also affect thinking, mood and how the body functions. Ongoing restriction can have serious medical consequences [2][3]. Therefore, if anorexia is suspected, it is advisable to seek a professional assessment rather than trying to resolve it at home.

Reading a guide cannot tell you whether someone has anorexia nervosa. Assessment brings together medical history, mental health and physical examination [1]. It also takes account of what the person and those around them have noticed. Diagnosis is the responsibility of the specialist team.

Why dieting can make the problem worse

A weight-loss diet adds rules when the relationship with food is already shaped by fear. It can make it harder to recognise that help is needed.

If the person is eating less and less, suggesting an even more restrictive plan diverts attention from medical assessment. British eating-disorder guidance includes restriction that worries the person or their family among the reasons to assess and refer [1]. The conversation should start with safety and access to an experienced team.

It is understandable that someone may look for a concrete solution for tomorrow. A standalone plan, without knowing how their physical and emotional health is, may not be enough.

Signs that go beyond eating very little

Concern about food and the body often shows up in daily life before it shows in appearance. Three very everyday signs may prompt consideration of a referral [1]: a way of restricting food that worries the person or those around them; changes in eating noticed by the family; and withdrawing from situations involving food.

In consultations, we hear things like finding it hard to eat with others, or meals beginning to take the place of other plans. This distress can coexist with physical problems while the person appears well [2]. Appearance does not indicate the level of risk.

None of these observations is a test. If you notice a worrying change, an open question such as “How have you been feeling?” may make it easier for the person to share what they are experiencing.

You do not have to wait until the problem is visible from the outside to ask for help.

Who can it affect, and why can it be hard to seek help?

Anorexia nervosa is not limited to adolescence or women. Eating disorders can affect people of different ages, sexes and body weights [2]. Stereotypes exclude those who do not fit the best-known image.

Shame and the difficulty of talking about food can delay seeking help [1]. It may also be hard to recognise that something ordinary has become a source of distress. Listening without reproach can open up that conversation.

If you are supporting someone, avoid negotiating about their appearance or asking them to prove how much they eat. You can offer to go with them to their GP. Family members or people close to them can take part in care when appropriate [1][2].

Our guide to body image discusses concerns about appearance without treating it as the only explanation.

What role does nutrition play, and what role does it not play?

Nutritional support is part of coordinated care. It helps address nutritional needs and difficulties with eating. British guidance recommends offering dietary advice only within a multidisciplinary team [1].

Nutrition alone does not treat the disorder. Nor is it enough to tell the person to eat more. Their physical situation must first be understood and a safe plan agreed with the team.

In consultations, we can support mealtimes and discuss questions about food, always in line with the shared goals of Psychology and Medicine. The pace and family involvement are decided according to each person’s age and situation [1].

A food list or general menu cannot meet all those needs. If there are signs of physical deterioration, medical assessment comes first [1][3].

How is anorexia nervosa treated?

Care begins with a specialist assessment of physical and mental health [1]. A GP can arrange referral to an eating-disorder service. If there is immediate risk, the route is emergency care [1][3].

The team coordinates psychological treatment, medical monitoring and nutritional support [1]. Psychiatry may also be involved, depending on the situation. Treatment is tailored to age, health and personal circumstances.

Physical monitoring matters even when the person does not report symptoms. Professionals assess vital signs and symptoms and arrange tests when needed [1][3]. Weight alone does not determine who needs care [1].

The initial aim is for the person to receive the care they need. The next steps are then agreed with them. For an overview and differences from other disorders, see the eating disorders guide.

What we see in consultations

A common question is whether it is possible to start with nutrition alone. When we suspect an eating disorder, we believe medical and psychological assessment should also be included [1]. This helps prevent a dietary plan from delaying the care that is needed.

Another idea is to wait until the problem is obvious to other people. That leaves people who are already suffering without help [2]. If eating, thinking about food or avoiding social situations is taking over your life, you can discuss it now.

Families also ask what to do if the person says they are fine and does not want to seek help. Share your concern without pressuring them, and consult primary care if they are not yet ready to ask for help [1]. If they are a minor, their family or caregivers can request an assessment and support them through the process.

How to seek help without waiting for a diagnosis

Make an appointment with your GP and explain what has changed in your eating, wellbeing and daily life. Ask for a physical assessment and referral to an eating-disorder service or specialist psychological care [1].

If the first conversation feels difficult, find someone you trust who can accompany you. Someone close to you can help describe what they have noticed while respecting your voice and decisions.

Seeking help early opens up options before distress takes up more space. The NIMH information for patients and families explains the support a specialist team may offer [2].