One of the most common misconceptions is that a child must be “underweight” or visibly ill before an eating disorder becomes medically serious. That is not true. I have cared for many patients who appeared “well” on the outside but were medically compromised. A child can be struggling physically even when their weight or appearance does not raise immediate concern.
It is important for a child with an eating disorder to be evaluated by an eating disorder–informed physician. I have cared for patients who were told to “eat healthier” because their cholesterol was elevated, even though elevated cholesterol is often seen in the setting of malnutrition. I have also cared for many patients who were told they were “healthy” because their labs were normal, when in reality normal labs can be falsely reassuring in a child with an even severe eating disorder. Many patients have normal lab results even when they are very ill. Normal labs do not always mean a child is safe.
This is especially important in atypical anorexia nervosa, where a child meets the psychological and behavioral criteria for anorexia but may not appear underweight. It is well documented that adolescents with atypical anorexia can have significant medical instability, including bradycardia, hypotension, and electrolyte abnormalities. I have seen many patients with atypical anorexia develop pericardial effusions and complicated refeeding syndrome. The degree, speed, and duration of weight loss often tell us more about medical risk than a single weight or BMI number.
For families, this means that rapid weight loss, stalled growth, restrictive eating, compulsive exercise, purging, or fear-driven food avoidance should be taken seriously even when a child “doesn’t look sick.”
The heart is especially sensitive to undernutrition. When the body is not receiving enough energy, it begins to conserve what it has, and the heart often responds by slowing down. In a healthy athlete, a low resting heart rate may reflect a strong, well-conditioned heart. In an eating disorder, however, a low heart rate is not a sign of fitness. It is a sign of malnutrition and energy conservation. The difference often becomes clearer when a child stands. A malnourished body will respond with a large jump in heart rate as it struggles to maintain blood flow, while a healthy athlete’s heart rate should not rise dramatically with a simple change in position. Blood pressure may also fall, leaving a child feeling dizzy, lightheaded, weak, or unusually fatigued. Fainting can occur, but the warning signs are often more subtle. A child may become dizzy or lightheaded when standing and still minimize, explain away, or deny those symptoms, even while their vital signs show that the body is struggling to compensate.This is why a careful eating disorder medical evaluation includes more than a resting heart rate. Pericardial effusions can occur in eating disorders as a complication of malnutrition and weight suppression, likely related to starvation-associated changes such as loss of cardiac and pericardial fat, reduced myocardial mass, and low metabolic/hormonal state. These effusions are often clinically silent and can improve with nutritional rehabilitation and weight restoration, but they reflect the broader cardiovascular effects of malnutrition and should be interpreted in the context of the patient’s overall medical stability. Vital signs, orthostatic measurements, an EKG and when needed, an echocardiogram, help reveal how the heart and body are responding to undernutrition.
Eating disorders become medically dangerous not only through restriction or weight loss. Purging behaviors can also create VERY serious risk, sometimes quickly.
Purging can place quiet but significant strain on the body. Repeated vomiting, laxative misuse, diuretic misuse, or other compensatory behaviors can disrupt hydration, kidney function, and the delicate balance of electrolytes the heart depends on to beat safely. These changes can lead to low potassium and metabolic derangements which may increase the risk of weakness, dizziness, palpitations, abnormal heart rhythms, or even more serious medical complications. A child who is purging may appear outwardly well while having significant internal medical risk.
This is one of the reasons purging should always be taken seriously, even when a child “appears well”. If there is concern or evidence that a child is purging, parents should seek prompt medical guidance from a provider experienced in eating disorder care. Purging can affect the body in ways that may not be apparent from the outside, and subtle early warning signs can be missed without an eating disorder informed assessment.
Refeeding requires particular care. When nutrition is increased after a period of restriction or inadequate intake, the body’s metabolism begins to shift. As insulin levels rise during nutritional rehabilitation, intracellular electrolyte shifts can occur, sometimes leading to clinically significant drops in circulating electrolyte levels with deleterious effects. During refeeding, phosphorus, potassium, magnesium, glucose regulation, renal function, liver enzymes, fluid balance, and thiamine status all require careful consideration because abnormalities in any of these areas can contribute to medical instability.
A child can begin nutritional rehabilitation with normal labs and still develop clinically significant changes as nutrition is restored. For this reason, children at risk for refeeding complications need close monitoring. Eating disorder providers are well versed in these risks and how to monitor for these dangers.
The goal is not to delay feeding. Ongoing undernutrition is dangerous, and nutrition restoration is essential for recovery. The goal is to restore nutrition thoughtfully with the right level of medical oversight. In a concierge medical model, this means close, individualized care rather than a one-time lab review. Monitoring is individualized, with close attention to each child’s risk factors, clinical symptoms, vital signs, and targeted labs as nutrition is restored.
In children and adolescents, an eating disorder can interfere with growth, pubertal development, menstrual function, bone health, and long-term physical development. A child may not only lose weight, but also stop gaining the weight needed for healthy growth. Over time, they may fall away from their expected height or weight curve, and puberty may slow, pause, or fail to progress as expected. This is seen particularly in patients with ARFID and anorexia nervosa.
When the body does not have enough energy available, it may suppress the reproductive hormone system as a way to conserve resources. In girls, this can lead to delayed menarche, irregular periods, or loss of menstrual periods. In boys, undernutrition can also affect pubertal progression, testosterone production, growth velocity, muscle development, and bone accrual. These changes are not simply “hormonal side effects”; they are signs that the body does not have enough nutritional support for normal development.
Menstrual changes are especially important because amenorrhea can reflect hypothalamic suppression from inadequate nutrition and low energy availability. However, the presence or absence of a period does not tell the whole story. Some patients continue to menstruate despite significant medical risk, and hormonal contraception can mask whether the body is producing normal cycles on its own. For this reason, menstrual history must be interpreted alongside growth curves, weight trajectory, pubertal stage, vital signs, symptoms, nutrition, exercise, and overall medical stability.
This is why pediatric eating disorder care must be interpreted differently than adult care. A single BMI or weight does not tell the whole story. The child’s prior growth pattern, expected developmental trajectory, pubertal stage, timing of weight loss, and menstrual or pubertal history all matter. Current guidelines emphasize individualized treatment goal weight ranges based on growth charts, pubertal development, and growth trajectory rather than BMI alone. The goal is not simply weight restoration; it is restoring the nutrition needed to support growth, puberty, menstrual function, bone health, and full physiologic recovery.
Families should not wait until a child looks severely ill to seek care by an eating disorder informed physician. By the time the signs are obvious, the body is already under significant stress.
A thoughtful eating disorder medical evaluation is not just a weight check. It should include a careful review of eating patterns with an in depth nutritional assessment, weight and growth history, exercise behaviors, purging behaviors, hydration, gastrointestinal symptoms, menstrual history when applicable, medications or supplements, mental health symptoms, and safety concerns.
The physical assessment should include blind or numberless weight, heart rate, blood pressure, orthostatic vital signs, temperature, physical exam, labs, and an EKG. The goal is not to frighten families. The goal is to understand how the eating disorder is affecting the body and to determine what is needed to keep their child safe.
An eating disorder becomes medically dangerous when the body begins showing signs that it is no longer able to compensate safely. Sometimes those signs are dramatic, such as fainting, chest pain, severe dehydration, or abnormal labs. But often they are quieter: a falling heart rate, dizziness on standing, stalled growth, increasing fatigue, missed periods, cold intolerance, constipation, shrinking food variety, rapid weight loss, or a child who seems increasingly trapped by rules around food, movement, or body image.
Parents do not need to know exactly how medically serious an eating disorder is before asking for help. That is what a careful medical evaluation is for.
Families do not have to wait for a crisis before seeking thoughtful, thorough medical guidance. Early recognition matters and careful monitoring matters. And every child deserves to have their symptoms taken seriously, their medical risk assessed carefully, and their recovery supported with clarity, compassion, and expertise.
Academy for Eating Disorders. Eating Disorders: A Guide to Medical Care: Critical Points for Early Recognition and Medical Risk Management in the Care of Individuals with Eating Disorders. 4th ed. Academy for Eating Disorders; 2021.
Hornberger LL, Lane MA; American Academy of Pediatrics Committee on Adolescence. Identification and management of eating disorders in children and adolescents. Pediatrics. 2021;147(1):e2020040279. doi:10.1542/peds.2020-040279
Golden NH, Katzman DK, Sawyer SM, Ornstein RM, Rome ES, Garber AK, et al. Medical management of restrictive eating disorders in adolescents and young adults: The Society for Adolescent Health and Medicine. Journal of Adolescent Health. 2022;71(5):648-654.
Sawyer SM, Whitelaw M, Le Grange D, Yeo M, Hughes EK. Physical and psychological morbidity in adolescents with atypical anorexia nervosa. Pediatrics. 2016;137(4):e20154080.
There is a word many parents have never heard, but many children and teenagers already know: looksmaxxing.
At first glance, it can sound almost harmless. Skincare. Haircuts. Fitness. Better posture. Dressing well. Learning how to feel more confident. Those things, on their own, are not the problem. Wanting to care about appearance is not new, and it is not inherently unhealthy.
But looksmaxxing is different.
Looksmaxxing is an online culture built around the idea that a person should “optimize” their appearance as much as possible, often in pursuit of a very narrow, idealized version of beauty or masculinity. For boys and young men, this may center on a sharper jawline, lower body fat, more muscle, clearer skin, greater height, or a face and body that look closer to a filtered, curated, algorithm-approved ideal. At its most benign, looksmaxxing may appear to involve grooming, skincare, fitness, or style. But in more troubling corners of this culture, the pursuit of optimization can move far beyond ordinary self-care. In clinical practice, and in the online content many adolescents are consuming, this pursuit of optimization can move far beyond skincare, grooming, or fitness. It can include cosmetic procedures, steroid use, dangerous stimulant use, and even self-injury aimed at changing facial structure.
Perhaps the most disturbing part is the way pain and harm can be reframed as discipline, commitment, or self-improvement. In these spaces, vulnerable adolescents may encounter the idea that damaging their own bodies is a reasonable price to pay for a sharper jawline, a leaner face, or features that better match an online ideal. Some young people are even being exposed to content that presents methamphetamine as a tool for becoming thinner or more facially “defined,” turning a highly addictive and medically dangerous stimulant into something falsely packaged as appearance optimization. That is not self-improvement. That is a dangerous distortion of what it means to care for oneself.
That is where this becomes frightening.
Because this is no longer just a teenager comparing themselves to a celebrity in a magazine, which was bad enough! This is a child with a developing brain being shown endless images, videos, rankings, routines, before and after transformations, and commentary about what is “wrong” with their face or body. The feedback loop is immediate, the content is tailored with unsettling precision, and the standards are unrealistic, creating a pressure that can feel constant and inescapable.
We are entering uncharted territory.
For too long, eating disorders in boys and young men were underrecognized, misunderstood, or missed entirely. Much of the conversation around body image focused on girls, thinness, dieting, and weight loss, and while those concerns still matter deeply, they were never the whole story. We are now seeing a growing number of males struggling with eating disorders, including many who do desire weight loss or thinness. But looksmaxxing adds another layer. For many boys, the pressure is no longer only about being thin. It is about being lean, muscular, angular, disciplined, and visibly “optimized.” The focus may be on body fat, muscle definition, facial structure, supplements, exercise, or constant body checking. And because these behaviors can be framed as fitness, confidence, or self-improvement, the distress underneath can be easily missed or considered a “fad”.
As a physician who cares for children and adolescents with eating disorders, this worries me tremendously.
It worries me because teenagers often do not describe this as distress. They describe it as self-improvement, saying they are simply trying to become healthier, stronger, more attractive, or more confident. But over time, what begins as an interest in appearance can become consuming. A teenager may spend hours researching skincare, jaw exercises, body fat percentages, protein goals, supplements, or workout plans, while gradually becoming more rigid with food, more compulsive with exercise, more preoccupied with mirrors and photos, and more withdrawn from normal life. What looks like discipline on the surface may, underneath, be a child who feels they are not good enough yet.
And because the language sounds like discipline, parents may miss the suffering underneath.
There is a meaningful difference between healthy self-care and a child becoming consumed by the belief that their body or face must be fixed. Healthy self-care usually makes a child’s life bigger. It supports confidence, connection, flexibility, and wellbeing. Looksmaxxing, when it becomes obsessive, often makes a child’s life smaller. It can narrow their food choices, their social life, their sense of worth, and their ability to feel comfortable in their own skin. The medical risks can be very real. Extreme restriction, rapid weight change, over-exercise, dehydration, stimulant or supplement use, purging behaviors, and unmonitored attempts to alter body composition can affect the heart, blood pressure, hormones, growth, puberty, sleep, mood, concentration, and bone health. Steroids and other appearance-enhancing substances can carry serious risks as well, especially when used by adolescents without medical supervision. These concerns are not theoretical. They are increasingly part of the world our children are navigating.
The U.S. Surgeon General has warned that social media is not proven to be sufficiently safe for children and adolescents, and that social media use is nearly universal among teens. The advisory also notes evidence connecting social media use with body image concerns, disordered eating, social comparison, and low self-esteem. That matters because looksmaxxing does not exist in isolation. It exists inside a digital environment that can repeatedly tell a child: your jaw is not sharp enough, your skin is not clear enough, your body is not lean enough, your muscles are not big enough, your face is not symmetrical enough, your height is not enough, you are not enough. No child should have to grow up under that kind of microscope.
Parents do not need to panic every time a teenager becomes interested in grooming, fitness, or appearance. But we do need to pay attention when that interest becomes rigid, consuming, or distressing. Warning signs may include sudden preoccupation with appearance, frequent mirror checking or body comparison, distress about specific facial or body features, avoidance of photos or social events, rigid eating, compulsive exercise, interest in supplements or steroids, secrecy around online content, or noticeable changes in mood, sleep, school performance, confidence, or social connections.
The most important question is not simply, “Is my child trying to look better?” The better question is, “Is this starting to cost them their health, their joy, their flexibility, or their sense of self?”
Looksmaxxing is scary because it takes normal adolescent insecurity and feeds it through an endless machine of comparison. It gives children a vocabulary for self-criticism before they have the maturity to understand what they are consuming. It can make dangerous behaviors look aspirational. It can make obsession look like discipline. And it can make a struggling child feel as though the problem is their body, when often the problem is the pressure being placed on that body. They need parents, clinicians, therapists, dietitians, coaches, and schools to understand that body image distress in boys is real, eating disorders in boys are real, and online appearance culture can be deeply harmful even when it is packaged as motivation.
Our children deserve better than this!
We are still learning what this new appearance culture will mean for children and teenagers, but we do not need to wait until a child is medically unstable or deeply entrenched in disordered behaviors before we take it seriously. Early recognition and compassionate attention can make an enormous difference, especially in a landscape where the message children receive online is often that they are a project to be perfected. They need to hear something steadier from us: that they are not a face to perfect, a body to optimize, or a collection of features to correct, but a whole person deserving of care, protection, and belonging.
U.S. Surgeon General. Social Media and Youth Mental Health Advisory.
American Academy of Pediatrics. Social Media and Adolescent Mental Health.
Nagata JM et al. Research and clinical commentary on boys, young men, digital media, eating disorders, and muscle dysmorphia.
Recent reporting on looksmaxxing and adolescent risk.
When most people think of anorexia nervosa, they picture someone who appears visibly undernourished. But this image does NOT reflect the full reality of eating disorders. One of the most important and often misunderstood presentations of this disease is atypical anorexia, a condition that can be just as medically serious, yet far less likely to be recognized early.
Atypical anorexia is classified within Other Specified Feeding or Eating Disorders (OSFED). It describes individuals who meet all of the psychological and behavioral criteria of anorexia nervosa with restrictive eating, an intense fear of weight gain, and significant distress related to body shape or weight but whose weight remains above the weight threshold specified for a diagnosis of anorexia nervosa. In many cases, these are children and adolescents who have experienced substantial or rapid weight loss, yet still appear outwardly “well.”
This distinction, however, is misleading. What matters medically is not simply where a child’s weight falls at a single point in time, but how their body has changed and how that change is affecting their physiology. Research consistently shows that the degree and velocity of weight loss are closely tied to medical risk. Even relatively modest weight loss when paired with the cognitive features of an eating disorder can be associated with significant psychological distress and clinically meaningful illness.
Because these patients may not “look sick”, atypical anorexia is frequently overlooked. Many families are reassured, and even medical providers may underestimate the seriousness of the illness. As a result, young people with atypical anorexia often come to medical attention later in the course of their illness, after the body has already begun to show signs of strain.
And those signs can be profound. Some of the sickest patients I have treated have been patients with atypical anorexia.
Children and adolescents with atypical anorexia can develop many of the same medical complications seen in "classic" anorexia nervosa. The body, faced with inadequate energy intake, begins to adapt in ways that prioritize survival. Heart rates may slow significantly, a physiologic response sometimes described as a “hibernation” state. Blood pressure may drop, particularly when standing. Electrolyte disturbances can emerge, especially in those who are purging. In some studies, nearly a quarter of adolescents hospitalized with atypical anorexia had bradycardia, and almost half showed orthostatic changes on presentation. Importantly, these complications are not determined by appearance. A child may seem outwardly stable while experiencing meaningful physiologic compromise. In fact, some research suggests that the amount of weight lost may be a more reliable predictor of medical instability than current weight alone.
There are also important nuances within this diagnosis. Not all individuals with atypical anorexia arrive there in the same way. Some have bodies that resist weight loss despite significant restriction. Others may have lived in larger bodies and lost a substantial amount of weight without ever reaching a threshold traditionally labeled as “low.” Still others may have experienced repeated cycles of weight loss and regain over time. What unites these presentations is a pattern of ongoing restriction and the substantial psychological burden it creates, reflecting both the severity of the illness and the degree to which these behaviors can become entrenched.
Recovery requires thoughtful, coordinated care. A multidisciplinary team, typically including a medical provider, therapist, and registered dietitian with expertise in eating disorders, will help guide both the medical and emotional aspects of healing. Atypical anorexia challenges the assumptions many of us have about what illness looks like. It asks us to look beyond appearance, to listen carefully, and to take early concerns seriously. Because when it comes to eating disorders, the absence of obvious signs does not mean the absence of risk and timely, informed care can make all the difference. This is something I care deeply about. I have seen how often people are overlooked because they do not fit a narrow definition of illness and I am committed to making sure that children and adolescents are recognized based on what their bodies and behaviors are telling us, not just where their weight falls, and that they receive the careful, comprehensive medical care their presentation truly requires.
Many children go through periods of picky eating.
They may prefer familiar foods, dislike certain textures, or take longer than parents would like to warm up to something new. That alone does not mean a child has an eating disorder. But sometimes what looks like picky eating is actually something more significant: avoidant/restrictive food intake disorder, or ARFID. What makes ARFID different is that the restriction goes beyond ordinary food preferences and becomes serious enough to affect nutrition, growth, physical health, or day-to-day functioning, without being driven by a fear of weight gain or a desire to be thinner.
ARFID does not look the same in every child. Some children are highly sensitive to the taste, smell, texture, temperature, or appearance of food. Some have a strong fear of an aversive event like choking, vomiting, or abdominal pain. Others seem to have very little interest in food at all and may rarely feel hungry. In many cases, the list of accepted foods becomes narrower over time rather than gradually broadening as a child gets older.
What I watch especially closely is the trajectory: whether things are gradually broadening and settling, or becoming narrower, more distressing, and more disruptive over time. Typical picky eating is frustrating, but many children still take in enough nutrition, continue to grow, and maintain their day-to-day functioning while slowly expanding their diet over time. With ARFID, the eating pattern becomes more impaired. Meals may create intense distress. Family life may start to revolve around avoiding certain foods or situations. School, travel, restaurants, sleepovers, and social events may become much harder. Weight loss may occur, but even when it does not, a child can still have significant nutritional deficiencies or psychosocial impairment.
Parents often ask, “What are the red flags that tell me this is no longer just picky eating?” I worry more when a child is losing weight, falling off their growth curve, relying heavily on supplements, eliminating more and more foods, avoiding entire textures or food groups, showing intense fear around eating, or having nutrition-related symptoms such as fatigue, dizziness, abdominal pain, constipation, poor concentration, or feeling cold all the time. I also worry when eating has started to interfere with school, relationships, and normal family life.
For many parents, one of the hardest parts is recognizing that ARFID can be present even when a child does not appear obviously unwell. Some children with ARFID are underweight, but not all are. A recent systematic review found that children and young people with ARFID can present across the weight spectrum, although low weight, nutritional deficiencies, and low bone mineral density are common concerns. Most studies found heart rates and blood pressures in the normal range, but some children with ARFID do experience bradycardia (low heart rate) or hypotension (low blood pressure). ARFID can carry meaningful medical risk, even when a child does not “look sick” or is mistakenly dismissed as simply being a picky eater.
ARFID often overlaps with other developmental, behavioral, or mental health concerns rather than occurring on its own. Higher rates of anxiety, autism spectrum disorder, ADHD, obsessive-compulsive features, and other emotional challenges have been described in children and adolescents with ARFID. These co-occurring conditions can influence how a child experiences food, eating, sensory discomfort, fear, and distress. Still, these associations do not mean that every child with one of these conditions has ARFID, or that every child with ARFID will have the same clinical picture. It does mean that restrictive eating in these children deserves thoughtful assessment rather than dismissal.
The good news is that help exists. Treatment for ARFID is often most effective when it is approached collaboratively, with medical care, nutrition support, and therapy aligned around the child’s needs. Current guidance and recent reviews support outpatient treatment whenever it is safe, often using family-supported approaches and cognitive-behavioral strategies tailored to the reason the child is restricting. The goal is not to shame a child into eating. It is to understand what is driving the restriction and help the child gradually return to a safer, more flexible relationship with food.
For families, the most important message is this: you do not have to carry the burden of deciding alone whether it is “serious enough.” If your child’s eating is becoming more limited, more distressing, or more disruptive to growth, health, or daily life, it is worth taking seriously and worth seeking support. Picky eating deserves thoughtful attention. ARFID deserves recognition and treatment. And families deserve clarity, thoughtful guidance, and a clearer sense of what comes next.
