Signs of an eating disorder

An eating disorder is a serious health condition. It changes how a person eats, and often how they think and feel about food, their body and themselves. It is not a diet, a phase or a lifestyle choice, and it is nobody's fault.^1,9

Warning signs can be small at first. They are also easy to explain away, especially in people who do not "look sick." This page walks through the signs to watch for, the danger signs that need a doctor right away, and the signs that are often missed. For the different kinds of eating disorders, see types of eating disorders.

Why do these signs matter?

Eating disorders can harm the heart, bones, stomach and teeth, and they often come with depression, anxiety or substance use. They also raise the risk of suicide.² Getting help early gives the best chance of a full recovery.¹

How common are they? An older U.S. survey (data from 2001 to 2003) found that over a lifetime about 0.6% of adults had anorexia nervosa, 1.0% had bulimia nervosa and 2.8% had binge-eating disorder.³ That last number is about 1 in 36 adults.

Behavior signs

These are things you may see or hear. Any one of them can have other causes. A pattern that lasts is what matters.⁴

• Constant talk about food, dieting, calories or weight
• Skipping meals, or avoiding events where food is served
• Food rituals, such as eating foods in a set order or moving food around the plate
• Pulling away from friends and activities, and becoming secretive
• Eating a very large amount in a short time, often alone, with a feeling of being unable to stop^2,4
• Hiding or hoarding food, or planning the day around eating episodes⁴
• Exercise that feels rigid and is kept up even when ill or hurt⁴
• A food list that keeps getting shorter, or a fear of choking or vomiting that limits what the person will eat^2,4

Emotional and thinking signs

An eating disorder often changes what a person feels and believes, not just what they eat.

• Strong worry about body size or shape, or checking the mirror often⁴
• Intense fear of gaining weight²
• Feeling shame, guilt or despair after eating^2,4
• Strong mood swings⁴
• Low mood or loss of interest in things once enjoyed
• Self-worth that depends on weight, shape or "being good" with food

Depression, anxiety and substance use problems often go along with eating disorders and can make them worse.^1,2 See signs of depression and anxiety if these feel familiar.

Physical signs

The body can send signals too. Some of these are easy to blame on stress, aging or another illness.⁴

• Dizziness, fainting, feeling cold all the time, or poor sleep
• Stomach pain, bloating or other stomach trouble
• Weight that goes up and down
• Missed or changing periods
• Dry skin, thin or brittle hair and nails, and muscle weakness
• Cuts and bruises that heal slowly, and getting sick often
• Damage to teeth and gums, or swollen cheeks, which can follow repeated vomiting⁴

None of these proves an eating disorder. A doctor can check for it and also look for other causes. To learn more, read health effects and medical risks.

Signs by type

The three common patterns below overlap. Many people move between them over time.²

Eating problems that cause real distress or harm count too, even when they do not match one of these exact patterns. A doctor may call them "other specified" eating disorders. More on this is on the types page.

Danger signs: get medical help right away

An eating disorder can become a medical emergency at any body size. Doctors who treat eating disorders list the signs below as reasons for urgent or hospital care.⁶

Normal blood tests or a normal exam do not rule out serious illness.⁶ If you are worried about someone's health, trust that worry and get them seen.

Signs that are easy to miss

Many people do not fit the picture most of us have in mind. That is one reason help comes late.

Larger bodies and normal-range weight

Most people with an eating disorder are not visibly underweight. People in larger bodies can be just as sick and should be taken just as seriously.⁶ In atypical anorexia nervosa, a person has the full picture of anorexia, but their weight stays in or above the typical range after weight loss. Doctors sometimes overlook it, so people can wait a long time for help.⁷ The complications can be as serious as in other forms, and how fast someone loses weight may matter as much as the number on the scale.⁷

Praise for weight loss can also hide the problem. If a person seems driven, upset or ashamed about eating, take it seriously whatever their size.

Men and boys

Eating disorders in men are often missed. Doctors, families and men themselves may not expect them. Many men worry less about being thin and more about being lean and muscular. They may use extreme diets, too much exercise or muscle-building products.^8,9 Because the signs look different, men may be diagnosed late or not at all, and stigma can keep them from speaking up.^8,9

Athletes and active people

Pressure to perform and a focus on weight, body shape or body fat can raise the risk of an eating disorder in sports.⁵ Signs may be hidden behind "training" or "discipline." Watch for rigid exercise that continues even through illness or injury, and for strong worry about food and body size.⁴

Midlife and older adults

Eating disorders do not end at 30. They can begin for the first time in midlife or later.⁹ Triggers may include grief, retirement, caregiving, loneliness, illness, menopause and worry about aging.⁹ Signs can be written off as aging or as side effects of medicine. Watch for unplanned weight changes, avoiding meals with others, a fixation on "clean" or "healthy" eating, fear of gaining weight, and tiredness, falls or bone problems.⁹ Weight loss in later life should always get a medical check. It can have many causes, including depression or dementia. Read more about eating disorders in midlife and later life.

People with type 1 diabetes

Poor blood sugar control that no one can explain should lead a doctor to ask about an eating disorder.⁶ Tell the diabetes care team if eating or body image is a struggle.

Is it an eating disorder or something else?

Many things change appetite and weight, including depression, medicines, stomach illness, dental problems and dementia. It is not your job to sort this out. A doctor can do that. What points toward an eating disorder is a worry about food, weight or shape that runs the person's thoughts, plus secretive or rigid eating. If you are unsure, ask for an evaluation. You can also see what causes and risk factors are involved.

When to get help

Get help if you notice any of these:

• Eating, food or body worries take up much of the day.
• Eating habits are hurting health, mood, work, school or relationships.
• You or a loved one feels out of control around food, or ashamed about it.
• Any of the physical danger signs above appear.

You do not need to be "sick enough." Start with a primary care doctor, a therapist or a counselor. They can arrange a team to treat the illness. See treatment for eating disorders for what to expect.

Free support in the U.S. The National Alliance for Eating Disorders runs a helpline staffed by therapists, at 1-866-662-1235. As of October 2026, its website lists weekday hours of 9 am to 7 pm Eastern time.¹⁰ For a mental health crisis, call or text 988 any time. In an emergency, call 911.¹

Education only. This page is general information written from the sources listed. It is not medical, legal or financial advice and does not replace a doctor, therapist or lawyer who knows your situation. How we write and check pages.