Anorexia Nervosa: Early Warning Signs, Causes, Self-Test, Treatment, and Everything You Need to Know

Xiao Wen was a woman in her mid-twenties who loved exploring new restaurants with friends. Outgoing and full of energy, she was the kind of person no one wanted to leave off the guest list.

Her family first noticed something was off when she started finding reasons to skip family dinners, and then stopped going out with friends altogether. Over the course of a few months, she was almost never present at any occasion that involved food. At first, her family assumed she was becoming more introverted or stressed about work. It wasn't until her hair began falling out in clumps, her moods grew unpredictable, and her weight dropped noticeably that they realized something was seriously wrong.

This article covers:

• What anorexia is and how it's classified

• Early warning signs and symptoms, and what to watch for in yourself or a loved one

• The causes of anorexia: how psychological, genetic, and social factors intersect

• How to tell anorexia apart from depression and anxiety

• The SCOFF self-screening tool for anorexia

• What family members can say when they first bring it up
  Treatment approaches and next steps

What Is Anorexia Nervosa?

Anorexia Nervosa is a type of eating disorder characterized by an intense fear of gaining weight and a distorted perception of one's own body. People with anorexia typically manage their weight through severe food restriction, excessive exercise, or other compensatory behaviors.

One important thing to know: in the early stages of anorexia, weight loss may not yet be visible. Someone can look completely fine on the outside, still going to school, still showing up to work, and no one around them would suspect anything. This is a big reason why anorexia is so difficult to catch early.

Why Does Recognizing Anorexia Early Matter?

Anorexia affects the whole body. Prolonged malnutrition can damage the heart, bones, endocrine system, and brain function. Among all psychiatric conditions, anorexia carries a relatively high mortality rate. Early identification and early intervention meaningfully improve the chances of recovery.

Types of Anorexia

Anorexia is divided into two subtypes.

The first is the Restricting Type, where a person reduces their weight by strictly controlling how much they eat, what foods they allow themselves, or how many calories they consume. There is no binge eating or purging involved. Behavioral signs include ongoing caloric restriction, avoiding entire food categories, or eating extremely small amounts very slowly. This is the more common subtype.

The second is the Binge-Eating/Purging Type. Roughly 50% of people who start with the restricting type develop binge-eating or purging behaviors over the course of the illness. This involves cycles of binge eating followed by compensatory behaviors, such as self-induced vomiting, laxative misuse, or excessive exercise, to "undo" the food intake and relieve the guilt associated with eating. This subtype is sometimes confused with bulimia nervosa; the key distinction is that people with anorexia typically remain significantly underweight.

What Causes Anorexia?

Anorexia doesn't have a single cause. It's almost always the result of multiple overlapping factors.

Psychological factors: are often at the core. Perfectionism, low self-worth, and intense anxiety around feeling out of control are among the most common psychological traits seen in people with anorexia.

Early life experiences: also play a role. Growing up in an environment where appearance and weight management were heavily emphasized, or having been mocked or criticized for one's body, can become contributing factors later in life.

Genetics: cannot be overlooked. Anorexia has a heritable component. People with a family history of eating disorders or mood-related conditions, such as depression or anxiety, carry a higher risk.

Social pressure: acts as an external driver. Cultural standards that equate thinness with beauty, combined with the constant stream of body-comparison content on social media, continuously reinforce negative self-perception around body image.

These factors rarely occur in isolation. For most people, anorexia develops when a psychological vulnerability meets a specific triggering event, such as prolonged stress, an interpersonal conflict, or a major life transition, that sets off a pattern of restrictive eating.

Early Warning Signs of Anorexia

In the early stages, there may be no noticeable change in weight, but behavioral shifts are already underway. These can include frequently looking up calorie counts, labeling certain foods as off-limits, or spending noticeably more time scrutinizing their body in the mirror. At this stage, these behaviors are easy to read as "being health-conscious," which is part of why they rarely raise alarm.

Initial Signs

Food-related behaviors start becoming systematic: skipping a meal here and there, eating unusually slowly, cutting food into very small pieces before eating only a little, or appearing to eat in front of family while privately finding ways to offset calorie intake afterward.

Emotionally, mood swings before and after meals become more frequent, and self-critical comments about their body grow increasingly negative. At this stage, people often deny that anything is wrong, common explanations include "I'm just trying to eat healthier" or "my stomach has been bothering me lately."

Symptoms of Anorexia

Once restrictive eating begins affecting the body, emotions, and daily functioning, it has moved into the territory of a diagnosable disorder. The following are the more definitive symptoms at this stage.

Physical symptoms:

• Significant weight loss (BMI below 18.5)
• Gastrointestinal issues: nausea, bloating, acid reflux, constipation
• Heart problems, persistent fatigue, dizziness
• Irregular or absent menstrual cycles
• Hair loss, dry skin, and constant sensitivity to cold, when all three appear together, they are a signal of prolonged malnutrition

Emotional symptoms:

• Increased frequency of irritability and anxiety; emotional reactions that seem disproportionate to the situation
• Speaking about their own body with strong disgust or fear
• Reduced ability to regulate emotions (prolonged malnutrition directly affects blood sugar levels and brain function)
• At this stage, family members often mistake what they're seeing for depression or anxiety, and miss the eating behaviors entirely

Behavioral symptoms:

• Gradually withdrawing from any social situation involving food (meals out, family dinners)
• Refusing to eat, binge eating, excessive exercise, self-induced vomiting, or laxative use
• Elevated suicide risk; thoughts of self-harm may emerge and must be taken seriously at this stage

How to Tell Anorexia Apart From Depression or Anxiety

Anorexia, depression, and anxiety share a lot of surface-level overlap: social withdrawal, emotional instability, and loss of motivation for daily life.

The key distinction is whether food, weight, and body image occupy a disproportionate amount of the person's mental space.

People with depression may lose interest in everything (including eating), but food itself is not a preoccupation. People with anxiety tend to worry across many areas of life, relationships, work, the future, and eating may be affected, but it's not the central focus.

People with anorexia, by contrast, are constantly and actively engaged with food: calculating, avoiding, controlling, with sustained attention on calorie intake and body appearance.

If someone is experiencing both low mood and an intense preoccupation with weight and body image, it's worth bringing both up explicitly when seeing a doctor so that a thorough evaluation can be done.

How Does Body Image Anxiety Develop Into Anorexia?

Body image concerns are extremely common, but several factors can push them in the direction of anorexia.

The 2026 Netflix documentary Reality Check: Inside America's Next Top Model brought public attention to how extreme body standards are manufactured and normalized. But long before documentaries like this, those same standards had already quietly filtered into everyday life through media and social content.

In the process of absorbing these messages over time, some people begin imposing strict rules on their eating. Those rules create a temporary sense of safety and accomplishment, but maintaining that feeling requires the rules to become increasingly strict. Once this pattern is established, controlling food intake becomes the primary way a person manages anxiety and self-worth. At this point, the fear of weight gain is only the surface layer; underneath it is a deeply embedded psychological coping mechanism.

What to Do When You First Notice Warning Signs

The instinct for many family members is to express concern directly, or to try to get their loved one to acknowledge that something is wrong. That impulse is completely understandable, but in practice, these approaches often put people with anorexia on the defensive and close off the very space needed for an honest conversation.

The following are common things people say that come from a place of care but tend to backfire:

• Confronting with worry: "I'm really worried about you. Can you tell me what's going on? Are you sick?"
• Expressing the family's concern: "We're all worried about you. Seeing you like this is hard for everyone."
• Pointing out the problem directly: "I've noticed you're barely eating lately. Your body won't be able to handle it."

What these approaches have in common is that they tend to raise the person's defenses and shrink the space for them to open up.

More helpful approaches:

Starting from a specific, concrete observation is more likely to feel like concern rather than accusation. For example: "I've noticed you haven't been eating with us much lately. I've been a little worried, can you tell me how you've been doing?" The goal isn't to get them to admit they have a problem right away, but to create a space where they feel safe enough to talk.

Another lower-resistance entry point is to focus on a physical symptom: "I noticed your hair has been falling out more than usual. Would you want to see a doctor about it?" This tends to meet far less resistance than bringing up eating behavior directly.

A study published in the Journal of Eating Disorders found that when family members shifted from confrontational communication toward a more collaborative approach, one focused on problem-solving while respecting the patient's autonomy, patients reported significantly lower psychological distress and showed greater willingness to engage in treatment [1].

Anorexia SCOFF Self-Screening Tool

The following five questions come from the SCOFF questionnaire, a clinically validated tool used for initial screening of eating disorder risk. Answer "yes" or "no" to each question. Give yourself 1 point for every "yes."

Answer based on your own experience (or your loved one's):

1. Do you ever make yourself vomit because you feel uncomfortably full?
2. Do you worry that you've lost control over how much you eat?
3. Have you lost more than 13 pounds (6 kg) in the past three months?
4. Do you believe you are fat even when others tell you that you're too thin?
5. Do you feel that food dominates your life?

Results:

0–1 points: No significant high-risk indicators at this time. If you still have concerns, continue to observe or consult a professional.

2 or more points: A further evaluation by a psychiatrist or psychosomatic medicine specialist is recommended.

A note: this questionnaire is a preliminary screening tool, not a formal diagnosis. However, a score of 2 or above is a signal that deserves to be taken seriously. Eating disorders frequently co-occur with depression and anxiety, and a thorough evaluation helps clarify the full picture.

If you'd like to speak with a professional physician, you can book an online psychiatric appointment here.

Treatment and Next Steps

If you've been observing a loved one's behavior, or if the warning signs described in this article feel familiar, the recommended next step is to schedule an appointment with a psychiatrist or psychosomatic medicine specialist. Describe the specific behaviors you've observed and how long they've been going on, this gives the doctor what they need to do a thorough assessment. You don't need to wait until you're "certain" something is wrong. For anorexia, early intervention makes a significant difference in long-term outcomes.

Treatment for anorexia needs to address both the physical and psychological dimensions simultaneously. Professional intervention cannot be replaced by family support alone, but your observations and your presence are an indispensable part of the recovery process.

Book a FundaTalk online mental health consultation today and let our professional team help you figure out the next step.

Reviewed and Written by Dr. Yun-Chih Chiu, MD

Clinical Specialties

Depression, bipolar disorder, panic disorder, obsessive-compulsive disorder, eating disorders (anorexia and bulimia), psychosomatic conditions, and trauma-related disorders including acute stress disorder and PTSD.
 

Credentials and Training

Board-Certified Psychiatrist, Taiwan

MD, Taipei Medical University

Senior Resident Physician, Department of General Psychiatry, Taipei City Hospital Songde Branch

Certified Focusing Trainer and Therapist, The Focusing Institute (TIFI)

Member, Taiwan Society of Biofeedback and Neurofeedback

Trained in Mind-Body Axis Awareness Practice

Training in Psychodynamic Psychotherapy

Training in Psychodrama

Schedule an online consultation with Dr. Yun-Chih Chiu (Mandarin only)

Further Reading

When a Family Member Has Mental Illness, What Should You Do? When to Take Them to Mental Health Services? | Family Self-Help Guide + Mental Health Resource Map

Generalized Anxiety Disorder: Symptoms, Causes, Types, GAD-7 Test, and Treatment Options

What Are Depression Symptoms? Complete Analysis from Physical Discomfort to Low Mood
 

Reference

1. Fleming, C., Byrne, J., Healy, K., & Le Brocque, R. (2022). Working with families of adults affected by eating disorders: Uptake, key themes, and participant experiences of family involvement in outpatient treatment-as-usual. Journal of Eating Disorders, 10, 88. https://doi.org/10.1186/s40337-022-00611-z