Eating Disorder Terms: Your Complete Medical, Treatment & Recovery Glossary

Eating disorder terminology can feel overwhelming. Treatment teams use medical terms, therapy acronyms, and recovery language that may be unfamiliar. This glossary is for anyone beginning their recovery journey, supporting a loved one, or learning about treatment options. Having clear definitions can help you navigate the process with confidence.

This glossary defines over 70 mental health and eating disorder terms. You’ll find them in easy-to-navigate categories. Each definition is written in clear, accessible language. Our goal is to help you understand the terminology you might encounter in treatment, therapy, and recovery.

Eating Disorder Terms: Types

Anorexia Nervosa

A serious eating disorder characterized by extreme food restriction, intense fear of weight gain, and distorted body image. People with anorexia nervosa typically maintain a very low body weight. This condition affects both physical and mental health and requires comprehensive treatment.

Atypical Anorexia

A form of eating disorder where someone exhibits all the symptoms of anorexia nervosa but maintains a weight within or above the normal range. Despite the weight difference, atypical anorexia is equally serious. It causes medical and psychological complications that require professional treatment.

Avoidant/Restrictive Food Intake Disorder (ARFID)

An eating disorder characterized by extremely limited food intake or avoidance of certain foods. Unlike anorexia, ARFID is not driven by body image concerns. Instead, people may avoid foods due to sensory sensitivities, fear of choking, or lack of interest in eating. This can lead to nutritional deficiencies and weight loss.

Binge Eating Disorder (BED)

This is the most common eating disorder in the United States. BED involves recurring episodes of eating large amounts of food in a short period. People feel a loss of control during these episodes. Unlike bulimia, binge eating disorder does not involve compensatory behaviors like purging.

Bulimia Nervosa

An eating disorder characterized by cycles of binge eating followed by compensatory behaviors. These behaviors may include self-induced vomiting, excessive exercise, fasting, or misuse of laxatives. People with bulimia nervosa are often intensely concerned with body weight and shape.

Compulsive Exercise (Anorexia Athletica)

Also called exercise addiction or obligatory exercise. This involves exercising excessively, even when injured or sick. The exercise is driven by rigid rules rather than enjoyment. It often serves as a way to compensate for eating or to control weight and shape.

Diabulimia

A dangerous condition where people with Type 1 diabetes deliberately restrict or omit insulin to lose weight. This causes the body to eliminate calories through excessive urination. Diabulimia can lead to severe medical complications including diabetic ketoacidosis and long-term organ damage.

Night Eating Syndrome (NES)

A pattern of eating disorder behavior characterized by consuming most daily calories after dinner or during nighttime awakenings. People with NES often have little appetite in the morning. They may feel they cannot sleep without eating. This pattern causes distress and disrupts normal sleep.

Orthorexia

An unhealthy obsession with eating only “pure,” “clean,” or “healthy” foods. While not yet formally recognized in the DSM-5, orthorexia causes significant distress and impairment. People with orthorexia become fixated on food quality. They may severely restrict food groups or experience anxiety around eating.

Other Specified Feeding or Eating Disorder (OSFED)

A diagnostic category for eating disorders that cause distress but don’t meet full criteria for other specific diagnoses. OSFED is just as serious as other eating disorders. It requires the same level of professional treatment and support.

Pica

An eating disorder involving persistent eating of non-food substances for at least one month. Common substances include dirt, chalk, paper, or hair. Pica can lead to serious medical complications including poisoning, infections, and intestinal blockages.

Pregorexia

An unofficial term describing eating disorder behaviors during pregnancy. This may include extreme dieting, excessive exercise, or purging behaviors. Pregorexia poses serious risks to both mother and baby. It requires immediate medical attention and specialized treatment.

Purging Disorder

An eating disorder characterized by recurrent purging behaviors without binge eating. People engage in self-induced vomiting, laxative misuse, or excessive exercise to control weight. Unlike bulimia, purging disorder doesn’t involve binge eating episodes.

Rumination Disorder

A condition where someone repeatedly regurgitates food after eating. The food may be re-chewed, re-swallowed, or spit out. This is not due to a medical condition. Rumination disorder can occur at any age and requires behavioral treatment.

Eating Disorder Terms: Medical & Clinical

Amenorrhea

The absence of menstrual periods. In eating disorders, this often results from insufficient nutrition and low body weight. Amenorrhea can lead to bone loss and fertility issues. It’s a sign that the body is conserving energy due to malnutrition.

Body Mass Index (BMI)

A measurement calculated from height and weight. While commonly used in medical settings, BMI has significant limitations. It doesn’t account for muscle mass, bone density, or body composition. Many treatment providers now focus less on BMI and more on overall health indicators.

Bradycardia

An abnormally slow heart rate, typically below 60 beats per minute. Bradycardia is common in people with anorexia nervosa. It occurs as the body conserves energy during starvation. Severe bradycardia can be life-threatening and may require hospitalization.

Electrolyte Imbalance

A disruption in the body’s mineral balance, including sodium, potassium, calcium, and magnesium. Electrolyte imbalances commonly result from purging, laxative abuse, or severe restriction. They can cause serious complications including heart arrhythmias, seizures, and death.

Gastroparesis

A condition where the stomach empties too slowly. This is common in eating disorder recovery, especially after prolonged restriction. Gastroparesis causes uncomfortable fullness, bloating, and nausea. It typically improves as regular eating continues.

Hypermetabolism

An elevated metabolic rate that occurs during eating disorder recovery. The body burns more calories than expected as it repairs damage and restores healthy functioning. This is why people in recovery often need to eat more than they anticipate.

Hypokalemia

Abnormally low potassium levels in the blood. This commonly results from purging behaviors or laxative abuse. Hypokalemia can cause muscle weakness, cramping, and dangerous heart rhythm problems. It requires immediate medical attention.

Lanugo

Fine, downy hair that grows on the body as a response to starvation. Lanugo appears as the body attempts to conserve heat when lacking sufficient body fat. It typically disappears with weight restoration and nutritional rehabilitation.

Osteopenia

Reduced bone density that’s not severe enough to be classified as osteoporosis. Eating disorders, particularly anorexia nervosa, increase the risk of osteopenia. This occurs due to hormonal changes and inadequate nutrition. Early intervention can help prevent progression to osteoporosis.

Osteoporosis

A condition characterized by weak, brittle bones that break easily. Eating disorders significantly increase osteoporosis risk, especially in young people. Bone loss during adolescence and early adulthood may be irreversible. This makes early treatment crucial.

Refeeding Syndrome

A potentially life-threatening complication that can occur when reintroducing food after prolonged malnutrition. It involves dangerous shifts in fluids and electrolytes. Refeeding syndrome requires careful medical monitoring during nutritional rehabilitation. This is why professional supervision is essential during recovery.

Russell’s Sign

Calluses or scars on the knuckles or back of the hand. These result from repeated self-induced vomiting. Russell’s sign is a physical indicator healthcare providers may look for. However, not everyone who purges develops this sign.

Eating Disorder Terms: Treatment & Therapy

Acceptance and Commitment Therapy (ACT)

A form of psychotherapy that teaches acceptance of difficult thoughts and emotions. Rather than trying to eliminate negative feelings, ACT focuses on building psychological flexibility. People learn to act according to their values even when experiencing discomfort. This approach is effective for eating disorder treatment.

Body Image Therapy

Therapeutic work focused on improving how someone perceives and feels about their body. This includes challenging distorted beliefs and reducing body-checking behaviors. Body image therapy helps people develop a more neutral or positive relationship with their physical appearance.

Cognitive Behavioral Therapy (CBT)

An evidence-based therapy that addresses the connection between thoughts, feelings, and behaviors. CBT helps identify and challenge distorted thinking patterns about food, weight, and body image. It’s one of the most researched and effective treatments for eating disorders, particularly bulimia and binge eating disorder.

Dialectical Behavior Therapy (DBT)

A type of therapy that combines cognitive behavioral techniques with mindfulness practices. DBT focuses on emotional regulation, distress tolerance, and interpersonal effectiveness. It’s particularly helpful for people who experience intense emotions or engage in impulsive eating disorder behaviors.

Eating Disorder Therapist

A mental health professional specializing in eating disorder treatment. These therapists have specialized training in the psychological aspects of eating disorders. They provide individual or group therapy to address underlying issues and develop healthy coping skills.

Exposure Therapy

A treatment approach involving gradual exposure to feared foods, situations, or body-related experiences. Through repeated exposure in a safe environment, anxiety decreases over time. Exposure therapy is particularly effective for addressing food fears and phobias in eating disorder treatment.

Family-Based Treatment (FBT)

An evidence-based approach primarily used for adolescents with eating disorders. FBT empowers parents to take an active role in their child’s recovery. The family works together to restore healthy eating and challenge the eating disorder. This approach has strong research support, especially for anorexia nervosa.

Harm Reduction

A treatment philosophy that focuses on reducing dangerous behaviors rather than demanding immediate abstinence. In eating disorder treatment, harm reduction acknowledges that recovery takes time. It prioritizes safety while working toward full recovery. This approach can be less overwhelming and more sustainable for some individuals.

Health at Every Size (HAES)

A weight-inclusive approach to health and wellness. HAES focuses on health behaviors rather than weight loss. It promotes body acceptance, intuitive eating, and joyful movement. Many eating disorder treatment programs incorporate HAES principles.

Intensive Outpatient Program (IOP)

A structured treatment program providing 9-12 hours of therapy per week. IOP typically includes group therapy, individual sessions, and nutritional counseling. Participants return home between sessions. This level of care balances intensive support with real-world recovery practice.

Interpersonal Psychotherapy (IPT)

A time-limited therapy focusing on improving relationships and addressing interpersonal problems. IPT recognizes that eating disorders often develop or worsen in the context of relationship difficulties. By improving communication and resolving interpersonal issues, eating disorder symptoms often improve.

Meal Plan

A structured eating guide created by a dietitian. Meal plans specify amounts and types of food to eat throughout the day. In eating disorder treatment, meal plans help normalize eating patterns. They ensure adequate nutrition while reducing anxiety around food choices.

Meal Support

Assistance provided before, during, or after meals. Meal support can include eating with a therapist, coach, or support person. The goal is to reduce anxiety, provide accountability, and practice new eating behaviors. This support is crucial during recovery.

Motivational Interviewing (MI)

A counseling approach that helps people explore and resolve ambivalence about change. MI is collaborative rather than confrontational. It helps people identify their own reasons for recovery. This approach is particularly helpful when someone feels uncertain about treatment.

Nutritional Rehabilitation

The process of restoring adequate nutrition and normalized eating patterns. This involves gradually increasing food intake to meet the body’s needs. Nutritional rehabilitation addresses both quantity and variety of food. It’s supervised by healthcare professionals to ensure safety.

Partial Hospitalization Program (PHP)

Also called day treatment. PHP can provide comprehensive care 5-7 days per week for 6-8 hours daily. Participants receive all meals and snacks with supervision, multiple therapy sessions, and medical monitoring. People return home each evening. This level of care is more intensive than IOP but less than residential treatment.

Recovery Coaching

Support provided by a professional coach who helps implement recovery skills in daily life. Recovery coaches offer accountability, encouragement, and practical assistance. They may help with grocery shopping, meal preparation, or managing challenging situations. Coaching complements therapy and provides real-world support.

Registered Dietitian (RD)

A healthcare professional with specialized training in nutrition. In eating disorder treatment, dietitians provide nutritional counseling and create meal plans. They help normalize eating patterns and challenge food rules. Dietitians are essential members of the treatment team.

Residential Treatment

24/7 structured care in a specialized treatment facility. Residential programs provide comprehensive support including all meals, therapy, medical monitoring, and psychiatric care. Stays typically range from 30-90 days. This level of care is appropriate when someone needs removal from their environment or hasn’t responded to lower levels of care.

Trauma-Informed Care

An approach that recognizes the widespread impact of trauma. Trauma-informed care emphasizes safety, trustworthiness, and empowerment. Many people with eating disorders have experienced trauma. This approach ensures treatment doesn’t re-traumatize and addresses underlying trauma when appropriate.

Behavioral & Symptom Eating Disorder Terms

Binge Eating

Consuming an objectively large amount of food in a discrete period of time. Binge eating involves feeling out of control during the episode. It typically happens more rapidly than normal eating. Binges often occur in response to emotional distress or restriction.

Body Checking

Repeatedly examining your body to assess size, shape, or weight. Common body checking behaviors include mirror checking, pinching body parts, measuring circumferences, or comparing your body to others. Body checking maintains negative body image and eating disorder behaviors.

Chew and Spit

A behavior where someone chews food and spits it out without swallowing. This allows tasting food while avoiding calorie intake. Chew and spit can cause dental problems and doesn’t satisfy hunger. It reinforces eating disorder patterns.

Compensatory Behaviors

Actions taken to “make up for” or “undo” eating. Common compensatory behaviors include purging, excessive exercise, fasting, or laxative use. These behaviors are driven by guilt or fear about food intake. They maintain the eating disorder cycle.

Food Rules

Rigid, self-imposed rules about eating. Examples include only eating at certain times, avoiding specific foods, or requiring particular food combinations. Food rules create anxiety and restrict normal eating. Challenging these rules is an important part of recovery.

Purging

Behaviors aimed at eliminating food from the body. The most common form is self-induced vomiting. Other purging methods include laxative abuse, diuretic misuse, or excessive exercise. Purging causes serious medical complications and is a key feature of several eating disorders.

Restricting

Limiting food intake below what the body needs. Restriction can involve eating very little overall, avoiding certain food groups, or following rigid eating patterns. Restriction leads to physical and psychological consequences. It often triggers binge eating or other compensatory behaviors.

Ritual Eating

Specific routines or patterns around eating. This might include cutting food into tiny pieces, eating foods in a particular order, or requiring meals at exact times. Ritual eating provides a sense of control. However, it maintains eating disorder rigidity and prevents normalized eating.

Eating Disorder Terms: Recovery & Support

Body Neutrality

An approach that focuses on what the body can do rather than how it looks. Body neutrality doesn’t require loving your body. Instead, it emphasizes respecting and caring for your body regardless of appearance. This can be more achievable than body positivity for many people in recovery.

Body Trust

The ability to rely on your body’s internal signals for hunger, fullness, and needs. Eating disorders disrupt body trust. Recovery involves gradually rebuilding this connection. Body trust develops as you consistently nourish yourself and your body responds predictably.

Full Recovery

Complete freedom from eating disorder thoughts, feelings, and behaviors. Full recovery means normalized eating without anxiety, a healthy relationship with your body, and the ability to use effective coping skills. Research shows full recovery is possible. It typically requires treatment and ongoing support.

Intuitive Eating

An approach that honors internal hunger and fullness cues rather than external diet rules. Intuitive eating involves making peace with food, respecting your body, and eating for both nourishment and pleasure. This framework is often incorporated into eating disorder recovery.

Lapse

A brief return to eating disorder behaviors during recovery. Lapses are normal and don’t mean recovery has failed. They’re learning opportunities to identify triggers and strengthen coping skills. With support, people can return to recovery practices quickly.

Meal Plan Flexibility

The ability to adapt structured meal plans to real-life situations. As recovery progresses, rigid meal plans become more flexible. Flexibility allows for spontaneous eating, social situations, and varied preferences. This is an important milestone in recovery.

Mindful Eating

Paying full attention to the eating experience without judgment. Mindful eating involves noticing flavors, textures, hunger, and fullness. It helps rebuild connection with body signals. This practice supports intuitive eating and reduces emotional eating.

Recovery Community

The network of people supporting eating disorder recovery. This includes treatment professionals, support groups, peer mentors, and online communities. Connection with others in recovery reduces isolation. It provides hope and practical support.

Relapse

A return to regular eating disorder behaviors after a period of recovery. Relapse differs from a lapse in duration and intensity. While concerning, relapse doesn’t mean starting over. Many people experience relapse as part of their recovery journey. Returning to treatment quickly improves outcomes.

Self-Compassion

Treating yourself with kindness, especially during difficult times. Self-compassion involves recognizing that struggle is part of being human. It counters the harsh self-criticism common in eating disorders. Research shows self-compassion supports recovery and prevents relapse.

Set Point Weight

The weight range your body naturally maintains when eating adequately without restriction. Set point is largely determined by genetics. Fighting against set point requires constant dietary restriction. Accepting set point weight is often part of recovery.

Weight Restoration

The process of returning to a healthy weight after malnutrition. Weight restoration is necessary for physical and psychological recovery. It allows the body to heal and brain function to normalize. Adequate nutrition supports this process.

Weight Suppression

The difference between someone’s highest adult weight and their current weight. Higher weight suppression is associated with increased eating disorder symptoms and medical complications. It also predicts greater difficulty maintaining weight gain in recovery.

Finding Support

Understanding eating disorder terms is an important step in your recovery journey. These terms will help you communicate with your treatment team. They can help you understand your diagnosis, and navigate treatment options. Remember that behind every clinical term is a real person working toward healing.

If you or someone you love is struggling with an eating disorder, professional support makes a difference. Eating Disorder Recovery Specialists offers comprehensive assessment and treatment services. This includes outpatient therapy, intensive outpatient programs, meal support, and recovery coaching. Our team understands the language of eating disorders because we specialize in treatment and recovery.

Recovery is possible. With the right support and treatment, you can build a life free from eating disorder behaviors. Understanding eating disorder terms is just the beginning of your healing journey. Reach out for a free consultation today.