Signs and Symptoms of an Eating Disorder (Not Just "Disordered Eating")
Eating disorders don't always look how you'd expect. Learn the real signs and symptoms, and when it's time to reach out for support.
Written by Anne Wilfong, RDN, LD, CEDS
Most people picture a thin, young woman when they think of an eating disorder. That's a persistent myth, and it keeps many people, sometimes even their own doctors, from recognizing what's actually happening. The signs and symptoms of an eating disorder can look very different from what most people expect. Research tells a different story: less than 6% of people with eating disorders are medically underweight, and eating disorders occur across every body size, gender, and age.
What Counts as an Eating Disorder, and What's "Disordered Eating"
The DSM-5-TR, the diagnostic manual used by mental health and medical providers in the US, lists five eating disorder diagnoses: anorexia nervosa, bulimia nervosa, binge eating disorder (BED), avoidant/restrictive food intake disorder (ARFID), and OSFED (other specified feeding or eating disorder). Each has its own specific criteria.
Disordered eating is the broader term for patterns like chronic dieting, rigid food rules, or regularly skipping meals that affect a person's relationship with food and body but don't meet the full criteria for one of those five diagnoses.
Which category someone falls into matters less than whether the pattern is causing harm. OSFED exists precisely because so many people have serious, damaging eating patterns that don't fit neatly into anorexia, bulimia, or BED criteria, and it's common: OSFED accounted for roughly 40% of eating disorder cases among men, and just over 44% among women, in the US as of 2018-19.
The signs below are the ones clinicians watch for, not a checklist to self-diagnose from. They can show up in any of the five diagnoses rather than being specific to one, and most individual signs also have other, unrelated causes. Listing them is meant to help you recognize when a pattern is worth bringing to a professional, not to let you confirm or rule out a diagnosis on your own.
Behavioral Signs
The behavioral symptoms of an eating disorder often show up before more visible physical changes.
Rigid rules about food: specific times, specific combinations, or entire food groups eliminated without a medical reason
Eating in secret, or the reverse: eating very little in front of others followed by large amounts alone
Frequent trips to the bathroom during or right after meals
Exercise that continues despite injury, illness, or exhaustion, or that feels non-negotiable regardless of circumstances
Avoiding meals with family or friends, or consistently making excuses around food-related events
Preoccupation with nutrition labels, calorie counts, or "clean" eating that has started interfering with daily life
Emotional and Cognitive Signs
Self-worth that rises and falls with what was eaten that day or with a number on a scale
Significant anxiety around meals, particularly ones a person doesn't control
Persistent thoughts about food, body, or weight that intrude on concentration, work, or relationships
Increased irritability, withdrawal, or low mood that tracks closely with eating patterns
Physical Signs
Noticeable weight changes in either direction, or a weight that no longer matches someone's growth curve or usual range
New or worsening GI symptoms, such as bloating, constipation, or stomach pain, that started or changed alongside a shift in eating patterns (for example, after beginning to restrict, binge, or purge)
Dizziness or lightheadedness when standing up, which can signal low blood pressure related to restrictive eating
Menstrual cycle changes or loss of a menstrual cycle
Dental erosion, calluses on the knuckles, or swelling near the jaw, which can point to self-induced vomiting
No single sign on these lists confirms an eating disorder, and having one or two doesn't necessarily mean a diagnosis. What matters clinically is the pattern: how long it's lasted, how much it's interfering with daily life, and how much distress it's causing.
Where This Overlaps With GLP-1s, PMOS, and Diabetes
Eating disorders show up more in some populations than others, and a few overlaps are directly relevant to the clients we see most often.
GLP-1 medications. A JAMA Psychiatry study found that more than half of patients diagnosed with binge eating disorder, and just over 40% of those with atypical anorexia nervosa, had used a GLP-1 receptor agonist. There's currently no standard protocol requiring eating disorder screening before a GLP-1 is prescribed, so restriction-driven use can go unrecognized by a well-meaning prescriber. If food feels more rigid or fearful on a GLP-1, not less, that's a conversation for your care team. Related: our post on muscle loss on GLP-1 medications.
PMOS (formerly, and still commonly, known as PCOS). A 2024 systematic review and meta-analysis of nine studies found women with PMOS have significantly higher odds of any eating disorder diagnosis compared to women without it. The hormonal and metabolic features of PMOS appear to raise risk independent of body weight. More on this overlap: PMOS and GLP-1 medications.
Diabetes. In type 1 diabetes, insulin omission for weight control, sometimes called "diabulimia," is a diabetes-specific eating disorder presentation, and a 2024 systematic review and meta-analysis found more than double the eating disorder risk compared to people without type 1 diabetes. In type 2 diabetes, a 2025 systematic review found binge eating disorder prevalence ranging from 2.5% to 29.6% across studies. See our type 2 diabetes nutrition counseling for more.
None of this means everyone on a GLP-1, or everyone with PMOS or diabetes, has an eating disorder. It means these are populations where screening matters more, not less, and where a generic checklist can miss what's actually going on.
Why Early Recognition Matters
Eating disorders carry one of the highest mortality rates of any psychiatric condition, and outcomes are consistently better with earlier treatment. Treatment is often delayed in part because screening gaps are real and documented: in a 2004 survey of primary care physicians, 41.6% of respondents reported that they never assessed patients for binge eating at all. More recently, the US Preventive Services Task Force has identified significant gaps in the evidence base for eating disorder screening in primary care. Someone with binge eating disorder, or someone purging in secret, can go undiagnosed for years as a result, not because their symptoms are subtle, but because no one asked.
A dietitian can help you understand whether your eating patterns warrant further evaluation. Diagnosing an eating disorder itself is the role of a therapist, physician, or psychiatrist. You don't need to sort out which one to contact first.
How Nutrition Counseling Supports Eating Disorder Recovery
Nutrition counseling for eating disorders isn't about assigning a meal plan and monitoring compliance. It typically includes:
Rebuilding a consistent pattern of eating after restriction, often the first priority regardless of diagnosis
Working through the specific fears or rules driving food avoidance, in coordination with a therapist
Addressing physical effects of the eating disorder, from bone health to GI function to menstrual cycle regularity
Reconnecting with hunger and fullness cues that restriction or bingeing have disrupted
Coordinating with the rest of a person's care team, since recovery works best with therapy, medical monitoring, and nutrition support working together
FAQ
Can you have an eating disorder at a "normal" or higher weight? Yes. Weight is not a reliable indicator of eating disorder presence or severity. Binge eating disorder is the most common eating disorder in the United States and occurs across the full range of body sizes. If bingeing is the pattern you recognize, our post on how to stop binge eating covers that directly.
Is it still a problem if I don't purge or restrict severely? Yes. Many people with OSFED or subclinical disordered eating experience real health effects and impact on daily life without meeting every criterion for a named diagnosis.
What's the difference between a diet and disordered eating? Diets are typically time-limited and built around a specific goal. Disordered eating tends to persist, expand over time, and increasingly interfere with daily functioning, relationships, and mental health, regardless of whether weight loss was the original intent.
Do I need a diagnosis before I can get help? No. Many people begin working with a dietitian or therapist while a fuller clinical picture is still being assessed.
Working With an Eating Disorder Dietitian in Austin
Anne Wilfong, RDN, LD, CEDS, is a Certified Eating Disorder Specialist, one of the most advanced credentials in eating disorder nutrition care. Our team works with clients across the full spectrum of eating disorders and disordered eating, including anorexia, bulimia, binge eating disorder, and OSFED, from a weight-inclusive, non-diet approach. We see clients in person in Austin, Texas, and via telehealth across the state, and we're in-network with BCBS, Aetna, Cigna, United, and Curative.
