Eating disorders are often associated with a great deal of shame. This can lead to silent suffering that remains unnoticed for a long time. After all, you cannot always tell that someone has an eating disorder by looking at their weight. Many people hide their eating behaviour for a long time or believe that their problems are not serious enough to seek support.

In addition, eating disorders cannot always be clearly distinguished from one another in real life. Some people meet all the diagnostic criteria for a specific eating disorder while others experience significant symptoms and distress without clearly fitting into one of the recognised diagnostic categories.

To help you better understand the different types of eating disorders, how they differ and why less clearly defined forms must also be taken seriously, I will introduce you to the most important eating disorders and other relevant conditions related to eating behaviour in this article.

What types of eating disorders are there?

When people think of eating disorders, anorexia and bulimia are often the first conditions that come to mind. In fact, in addition to these two well known disorders, there are other eating disorders including binge eating disorder as well as other specified and unspecified feeding or eating disorders.

There are also eating disorders such as ARFID, pica and rumination disorder that are far less widely known among the general public. Terms such as orthorexia and night eating syndrome are also frequently used in connection with problematic eating behaviour but are classified differently from a diagnostic perspective.

In real life, drawing clear boundaries between different eating disorders is not always easy. Symptoms can overlap, the course of an illness can change over time and not everyone fully meets the criteria for a specific diagnosis. However, this does not mean that their distress should be taken any less seriously.

To help you distinguish between the different forms, I will take a closer look at the best known eating disorders below.

Anorexia Nervosa

When considering the different types of eating disorders, anorexia nervosa is certainly one of the best known.

People with anorexia nervosa severely restrict their food intake and experience an intense fear of gaining weight or engage in persistent behaviours that interfere with weight gain. Strict rules around food often develop. Certain foods are avoided, meals are skipped or food intake is reduced more and more over time. Excessive exercise or other behaviours intended to prevent weight gain may also be part of the disorder.

Body weight and body shape often occupy a significant amount of space in a person’s thoughts, emotions and sense of self worth. The way someone perceives their own body may differ considerably from how others perceive them or they may underestimate the significance of their body weight and eating behaviour for their health. Anorexia nervosa can have severe physical and psychological consequences and can become life threatening.

However, it is important to move away from the idea that people with anorexic eating behaviour must always fit the stereotypical image of someone who is extremely thin.

Atypical Anorexia

People whose symptoms do not fully meet the diagnostic criteria for anorexia nervosa can also experience significant distress and serious health consequences.

One well known example is atypical anorexia. The term is classified differently depending on the diagnostic classification system being used. It refers to conditions in which the central features of anorexia are present but individual diagnostic criteria are not fully met.

This can include people who severely restrict their food intake, lose a significant amount of weight and experience an intense fear of gaining weight but whose body weight remains within or above the medically expected range despite the weight loss.

This clearly demonstrates why it is problematic to assess eating disorders based solely on body weight. A person can be seriously ill and experience significant physical and psychological consequences without fitting the common stereotype of someone with anorexia.

Bulimia Nervosa

Another well known eating disorder is bulimia nervosa.

People with bulimia nervosa experience recurrent binge eating episodes during which they consume a large amount of food within a limited period of time and simultaneously feel that they have lost control over their eating behaviour.

Afterwards, they attempt to compensate for their food intake through various behaviours and prevent weight gain. These behaviours may include self induced vomiting, fasting, the misuse of laxatives or other medications and excessive exercise.

In bulimia nervosa, body weight and body shape also often have a strong influence on self worth. After binge eating episodes, many people experience shame, guilt and self blame which is why the disorder is often hidden from family members, friends and others for a long time.

Binge Eating Disorder

People with binge eating disorder also experience recurrent binge eating episodes during which they feel that they have lost control over their eating behaviour.

During these episodes, they may eat much more quickly than usual, consume large amounts of food despite not being physically hungry or continue eating until they feel uncomfortably full. Binge eating episodes often take place alone because people feel ashamed of their behaviour or the amount of food they consume.

Afterwards, they may experience intense guilt, low mood, disgust with themselves and significant distress. The main difference from bulimia nervosa is that people with binge eating disorder do not regularly attempt to compensate for binge eating episodes through vomiting, fasting, excessive exercise or other compensatory behaviours.

Binge eating disorder is a distinct clinical condition and should not simply be described as “bulimia without vomiting.”

Other eating disorders and mixed presentations

In real life, eating disorders cannot always be clearly assigned to a specific category. Some people experience significant distress and clear symptoms of an eating disorder without meeting all the diagnostic criteria for anorexia nervosa, bulimia nervosa or binge eating disorder. There are additional diagnostic categories under which such conditions can be classified.

The course of an eating disorder can also change over time. A person may develop different symptoms throughout their life or meet the criteria for different eating disorders at different points in time.

This is precisely why we should move away from the idea that an eating disorder must always fit neatly into a specific category. The absence of a clear diagnosis does not mean that a person’s distress is less serious or that professional support is unnecessary.

In addition to anorexia nervosa, bulimia nervosa and binge eating disorder, there are other eating disorders that receive less public attention.

ARFID

Avoidant Restrictive Food Intake Disorder, or ARFID, is characterised by persistent restriction of food intake or the avoidance of certain foods. Unlike anorexia nervosa, ARFID is not primarily driven by a fear of gaining weight or an intense preoccupation with body weight and body shape.

Reasons for restricted food intake may include a lack of interest in eating, strong sensitivity to certain characteristics of food such as taste, smell or texture and fear of unpleasant consequences of eating. Restricted food intake can lead to an inadequate intake of energy or nutrients and significant impairment in everyday life.

Pica

People with pica repeatedly eat substances that are not intended for consumption and have no nutritional value. These may include soil, paper or other materials.

For diagnostic classification, it is important that the behaviour is not appropriate for the person’s developmental level and is not exclusively part of a culturally customary or socially accepted practice. Because eating such substances can be associated with significant health risks, pica also requires professional treatment.

Rumination Disorder

Rumination disorder is characterised by the repeated regurgitation of food that has already been swallowed. The food may be rechewed, swallowed again or spat out.

The repeated regurgitation cannot be explained solely by another medical condition and does not occur exclusively during the course of another eating disorder.

Rumination disorder can also have physical consequences and be associated with significant distress.

Night Eating Syndrome: Eating in the Evening and at Night

In night eating syndrome, a significant proportion of a person’s food intake occurs during the evening and nighttime hours. People repeatedly eat after their evening meal or wake up during the night to eat. They are aware of their food intake and can remember it afterwards.

This distinction is important because night eating syndrome should not be confused with sleep related eating disorders. In sleep related eating disorders, people are not fully awake while eating and may have little or no memory of their food intake afterwards.

Night eating syndrome can be associated with significant distress, sleep problems and impairment in everyday life. However, it is classified differently from anorexia nervosa, bulimia nervosa and binge eating disorder from a diagnostic perspective.

Orthorexia Nervosa

The term orthorexia describes an excessive and compulsive preoccupation with eating in a way that is perceived as healthy or correct.

People develop increasingly strict rules about which foods they are allowed to eat and which foods they must avoid. A significant part of the day may revolve around planning, controlling and evaluating their eating behaviour.

Breaking self imposed rules can trigger intense feelings of guilt, shame or anxiety. Over time, more and more foods are often excluded which can severely restrict a person’s diet and negatively affect social relationships and everyday life.

Shared meals, restaurant visits or invitations may be avoided because complete control over food preparation and ingredients is not possible. Orthorexia is currently not recognised as a separate diagnosis in the major international classification systems for diseases and mental disorders.

However, this does not mean that a compulsive relationship with healthy eating is harmless. If thoughts about food and nutrition dominate a significant part of a person’s life, lead to social withdrawal or negatively affect physical and psychological health, professional support should be sought.

Can You Tell If Someone Has an Eating Disorder by Their Weight?

One of the most important things to understand about eating disorders is that you cannot reliably tell whether someone has an eating disorder simply by looking at them.

People with eating disorders can be underweight, within the normal weight range or overweight.

Body weight alone is neither sufficient to identify an eating disorder nor to rule one out. Despite this, the belief persists that someone must be extremely thin before their eating behaviour is perceived as seriously problematic.

This can lead people to minimise their own suffering or prevent others from taking their struggles seriously. Some people wait a long time before seeking support because they believe they are not sick enough or do not fit the stereotypical image of someone with an eating disorder.

What matters is not only the number on the scale but the impact that food, body weight and body image have on a person’s thoughts, emotions, behaviour and everyday life.

Emotional Eating and Eating Disorders: How Are They Connected?

The term emotional eating is being used increasingly often but there is no universally accepted clinical definition that determines where emotional eating begins, where it ends and which forms of eating behaviour fall under the term.

In my work, I understand emotional eating as a broad spectrum of eating behaviours in which emotions, internal states and psychological processes play an important role. This spectrum ranges from occasionally eating in response to stress, frustration, loneliness or boredom to recurring eating patterns associated with increasing distress and diagnosed eating disorders.

This does not mean that all emotional eating is an eating disorder. An eating disorder is a mental health condition that is assessed according to established diagnostic criteria. However, emotions and psychological processes can play an important role in the development and maintenance of eating disorders which is why I consider eating disorders to be part of the broader spectrum of emotional eating behaviours.

This perspective is important to me because eating behaviour does not become problematic overnight. It can change over the course of years, become more severe and take different forms. Not everyone who struggles with their eating behaviour meets the criteria for an eating disorder. However, this does not mean that their distress should be taken any less seriously.

If eating increasingly becomes a way of coping with emotions, inner tension or difficult situations, it is worth taking a closer look. The aim is not to prematurely diagnose yourself but to understand the role food has taken on in your life and the needs and emotions that may lie behind it.

When Should I Seek Help?

Many people wait a long time before seeking support. They compare themselves with others who have eating disorders, minimise their own problems or believe that their eating behaviour is not serious enough.

However, you do not have to wait until your eating behaviour reaches a certain level of severity.

If you are struggling with your eating behaviour, spend a significant part of the day thinking about food, weight or your body, regularly experience binge eating episodes, severely restrict meals, vomit after eating, misuse laxatives or other medications to control your weight or force yourself to exercise excessively, you should seek professional support.

Intense feelings of shame and guilt, social withdrawal or the feeling that you have lost control over your eating behaviour are also reasons to take your situation seriously.

A doctor, psychotherapist or specialised eating disorder service can help you receive a professional assessment of your eating behaviour and identify appropriate next steps.

Conclusion

As you can see, there are different types of eating disorders that cannot always be clearly distinguished from one another. The best known eating disorders include anorexia nervosa, bulimia nervosa and binge eating disorder. There are also other eating disorders such as ARFID, pica and rumination disorder as well as atypical presentations, mixed forms and other conditions related to eating behaviour.

One of the most important messages I want you to take away from this article is that you cannot reliably tell whether someone has an eating disorder by looking at their body weight and that your suffering does not only deserve to be taken seriously once you meet all the criteria for a specific diagnosis.

It is equally important to distinguish between emotional eating and an eating disorder. Emotional eating is not automatically a mental health condition. However, if your eating behaviour takes up more and more space in your life and you experience loss of control, severe restriction, compensatory behaviours or significant distress, you should seek professional support.

My services for emotional eating are not a substitute for medical, psychiatric or psychotherapeutic assessment and treatment of eating disorders. If you are unsure whether your eating behaviour requires treatment, contact a doctor, psychotherapist or specialised eating disorder service.

You do not have to wait until things get worse before taking your own suffering seriously.

Note: This article is intended for general informational purposes and is not a substitute for individual medical, psychiatric or psychotherapeutic assessment or treatment.