Eating disorders in adolescence have specific characteristics that set them apart from the same disorders in adults: earlier and faster onset, often more rapid progression, greater impact on physical growth and brain development (the teenage brain is still developing), and medical complications that develop more quickly. Anorexia nervosa has the highest mortality rate among all psychiatric disorders, and 95% of cases begin in adolescence. Recognizing early warning signs—before the disorder takes deep root—is the difference between quick recovery and a long, difficult journey.

Early warning signs of anorexia in teenagers

Behavioral changes that come before visible weight loss: growing, intrusive preoccupation with calories, food, and weight (the teen talks constantly about diets, counts calories, compulsively reads food labels), avoiding family meals with new excuses each time (studying, busy schedule, "I already ate"), rigid eating rituals (cutting food into tiny pieces, eating foods in a fixed order, rearranging food on the plate), progressive elimination of food categories ("I don't eat fats anymore," then "I don't eat carbs," then proteins), increased exercise even when sick or extremely tired, wearing increasingly loose clothing to hide the body. Visible weight loss comes after these changes: when it's noticeable, the disorder is already established for weeks or months.

Warning signs of bulimia in teenagers

Bulimia is often invisible because many girls with bulimia maintain a normal weight. Specific signs to watch for: unexplained disappearance of large amounts of food (especially sweets and comfort foods), frequent bathroom visits after meals, deteriorating teeth (stomach acid erodes tooth enamel), swollen parotid glands (puffy cheeks, a typical sign of repeated vomiting), calluses on the knuckles (Russell's sign: from using fingers to induce vomiting), unexplained mood swings, recurring food expenses that "disappear," systematic avoidance of the dinner table after eating.

Binge eating disorder in teenagers

BED is the most common eating disorder in adolescence: recurring episodes of binge eating (eating much faster than normal, until uncomfortably full, in secret, with intense distress and shame afterward), without compensatory behaviors like vomiting. It's strongly associated with being overweight but isn't the same thing: normal-weight teenagers can have BED. The intense shame and secrecy around episodes delay seeking help for years. Signs to watch for: food that mysteriously disappears, episodes of eating in secret, significant distress and guilt after eating.

Risk factors in adolescence

Factors that increase the risk of eating disorders in teenagers: cultural pressure toward thinness (social media, Instagram, TikTok with body-shaming or "fitspiration" content), negative comments about weight from family or peers (weight-based bullying is one of the most documented triggers), history of restrictive dieting at a young age, aesthetic sports or weight-category sports (gymnastics, dance, wrestling), family history of eating disorders or other psychiatric conditions (anxiety, depression, OCD), low self-esteem and perfectionism (eating disorders often start as a way to control one aspect of life), traumatic experiences.

How to talk with a teenager you suspect has an eating disorder

Don't talk about food, weight, or physical appearance: it creates defensiveness and denial. Talk about how they're feeling: "I've noticed you seem tired lately, you seem more distant, I'm worried about you." Use first-person statements: "I'm concerned because..." instead of "You're doing things that aren't right." Don't accuse, diagnose, or frighten. Offer unconditional support: "Whatever's going on, I'm here for you." Suggest talking to a professional as an act of care, not punishment. Denial is central in the early stages of eating disorders: prepare yourself for pushback and keep being present and concerned without giving up.

What to do if you recognize warning signs in your child

First step: contact your pediatrician or family doctor within days, not weeks. Bring specific, dated observations (when you noticed it, what you've observed, which behaviors). The doctor will assess the clinical situation and take initial measurements (weight, height, vital signs, blood tests). Second step: request a specialized psychiatric or psychological evaluation for eating disorders. In Italy, specialized eating disorder centers are located in major cities and are part of the regional health systems (ASL). Don't wait for long waiting lists: eating disorders are psychiatric emergencies. Third step: inform the school (the main teacher, school psychologist): coordinated school and clinical support is essential.

Social media and eating disorders: how to manage them

"Pro-ana" and "fitspiration" content on Instagram and TikTok has been linked to worsening body image and increased eating disorder risk in teenagers. This isn't demonizing social media: it's research data. As a parent: talk with your teen about the content they follow online (don't ban it: use dialogue), teach media literacy (how to recognize filters, how images are constructed), show interest in their profiles without invading privacy, actively suggest body positivity and food freedom accounts. Social media use isn't the problem: the type of content consumed is.

Resources in Italy for eating disorders in adolescence

The Italian Ministry of Health has an online map of specialized eating disorder centers by region, accessible on the ministry website. Family counseling centers (Consultori familiari) at regional health systems often offer free initial access. The Eating Disorder Helpline and organizations like ABA (Association for the Study and Research of Anorexia, Bulimia and Eating Disorders) offer support and guidance. SISDCA (Italian Society for the Study of Eating Disorders) has a directory of specialized professionals. You're not alone in this: resources exist.