Dr. Steven Bratman coined the term orthorexia (“right appetite”) more than two decades ago to describe what happens when health-conscious diets go too far.
Although it still hasn’t been accepted as an official medical diagnosis, orthorexia nervosa is a proposed eating disorder that involves an extreme obsession with eating a “correct” diet. People with orthorexia nervosa strive to eat only foods they consider healthy and strictly avoid foods they deem to be unhealthy or impure. Their obsession with eating a healthy diet takes over their lives, eventually impairing their mental, social, and even physical well-being.
The topic of orthorexia is controversial within health circles. On the surface, it can be hard to distinguish between folks who are simply health-conscious and those who have crossed the line into disordered eating. Any diet—even relatively mainstream ones like Mediterranean or paleo—could veer into orthorexia depending on the individual.
People who raise concerns about orthorexia often get accused of “fit-shaming.” Then the straw man arguments begin: “Oh, so I guess it’s healthier just to eat Twinkies and Big Macs, then?” No, obviously not. Orthorexia starts with food rules or following diets, but it’s much more than that.
To be clear: Wanting to be healthy is not orthorexic. Neither is believing that some foods are healthier or more nutritious than others. Cutting out certain foods, tracking macronutrients, or following a specific diet is not inherently problematic.
However, those behaviors can be stepping stones to orthorexia, so this is a conversation we need to be willing to have.
What is Orthorexia Nervosa?
Orthorexia nervosa is a preoccupation with healthy eating that ultimately interferes with health and well-being.
The first stage involves setting rules and restrictions around what foods you will and will not eat. Specific rules vary from person to person. An individual might avoid gluten, food additives, GMOs, dairy, animal products, nightshades, sugar, artificial sweeteners, grains, or whatever they deem to be unhealthy.
Before you get defensive, understand that food rules are only step one. They are necessary but not sufficient for developing orthorexia nervosa. Many people follow set diets or restrict certain food groups without developing orthorexia. Diet behaviors don’t cross the line into orthorexia nervosa until they start to interfere with quality of life.
Definition of Orthorexia Nervosa
Eating disorders and other mental health disorders each have a set of diagnostic criteria. These are like checklists that help doctors and therapists decide when a particular diagnosis is warranted. Currently, orthorexia nervosa is not recognized as an eating disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM-V). That means there are no agreed-upon diagnostic criteria.
Nevertheless, researchers and practitioners need to be able to differentiate an ardent healthy-eating enthusiast from someone who has crossed the line into disordered eating. Experts have proposed various ways of defining orthorexia nervosa.1 While the specifics deviate somewhat, they share common features:
Behaviors: Obsessive preoccupation with eating only foods one deems “healthy.” Strict avoidance of foods deemed “unhealthy.”
Negative effect on mental health or well-being: Behaviors and/or thoughts around food cause stress, distress, fear, or anxiety.
Negative impact on social relationships or work: Preoccupation with diet detracts from one’s ability to engage in usual social relationships or do one’s job properly
Right away, you can see that orthorexia nervosa goes beyond mere dieting. Someone can have elaborate, rigid, even seemingly illogical food rules for themselves, but as long as they don’t significantly impact their well-being, those behaviors wouldn’t be considered orthorexic. Orthorexia nervosa requires both dieting and negative psychosocial consequences.
Typically, even the strictest eating behaviors are not considered disordered in people who follow their diet for religious reasons, because they have food allergies or sensitivities, or because it has been prescribed by a doctor to treat a medical disorder.
How Orthorexia Nervosa Compares to Other Eating Disorders
There’s some debate about whether orthorexia nervosa is an eating disorder on its own or whether it’s a variant of anorexia nervosa. The two share common features:
Preoccupation with food rules
Structuring one’s life around one’s diet
Deriving some psychological benefits from being compliant
However, there are also clear distinctions. Weight and body image concerns are central to anorexia nervosa, whereas orthorexia is mainly about health or purity. Both disorders may result in weight loss due to food restriction, but that isn’t the primary goal with orthorexia. Also, people with anorexia usually hide their food restrictions, while people with orthorexia tend to be open about them. They may even try to recruit others to their way of eating.
Orthorexia nervosa also shares features with another eating disorder called Avoidant Restrictive Food Intake Disorder, or ARFID. Folks with ARFID eat an extremely limited number of foods too, but it’s because they find eating to be frightening or discomforting. They aren’t motivated by health or purity concerns.
Warning Signs that Your Healthy Eating Might Be Sliding Toward Orthorexia Nervosa
Many people, probably most people, can try different diets and eliminate specific foods or food groups without ever going down this path. However, for some people, it’s a slippery slope. Some potential red flags include:
Food rules get stricter over time, so there are fewer and fewer foods you can eat “safely.”
Spending excessive time and/or money preparing food. Planning and preparing food starts to crowd out other activities.
Self-esteem becomes wrapped up in diet and how well you adhere to your rules. You may start to feel morally superior to others who don’t eat like you.
Extreme anxiety or inability to eat food that you didn’t prepare because you can’t be sure it’s clean.
Fear, anxiety, or guilt following diet transgressions, perhaps followed by compensatory behaviors like fasting.
Strong belief that you can control your current and future health by eating correctly (beyond what would generally be considered reasonable).
Again, let me stress that these behaviors exist on a spectrum. You may see glimpses of yourself here, but that doesn’t mean you have an eating disorder. With orthorexia nervosa, your diet and food beliefs significantly impact other areas of your life for the worse.
Who Is at Risk for Orthorexia Nervosa?
Orthorexia shares certain features with obsessive-compulsive and anxiety disorders. Individuals with one of these issues may be at greater risk for developing orthorexia nervosa.2 Perfectionism and narcissism may also contribute to orthorexic tendencies.34 More research is needed in each of these areas.
It’s not clear whether orthorexia nervosa is related to gender, age, or BMI.5 Studies have found high rates of orthorexic behaviors among folks like yoga teachers, dieticians, gym-goers, and athletes—sometimes exceeding 80 percent of people studied. However, most of these studies used an instrument called ORTO-15 to measure orthorexia. Other researchers have widely criticized this scale for measuring the behavioral component of orthorexia only.6 We’d expect these folks to prioritize healthy eating, but that doesn’t necessarily mean their beliefs or behaviors are problematic.
Healthy Orthorexia Versus Orthorexia Nervosa
Although the concept of orthorexia is more than two decades old at this point, researchers and clinicians are still trying to draw a clear line between healthy and unhealthy concerns about food. In 2018, researchers from two Spanish universities proposed a new tool called the Teruel Orthorexia Scale to separately measure “healthy orthorexia” and orthorexia nervosa.7
Healthy orthorexia is meant to capture a “non-pathological interest in healthy eating.” Scale items for healthy orthorexia include:
I mainly eat foods that I consider to be healthy
I don’t mind spending more money on food if I think it is healthier
I’d rather eat a healthy food that is not very tasty than a good tasting food that isn’t healthy
I try to convince people from my environment to follow my healthy eating habits
As you can see, people who score highly on this dimension care about their food quality more than the average person, but their behavior isn’t maladaptive (though their friends and partners might not love it).
In contrast, orthorexia nervosa is characterized by items like:
Thoughts about healthy eating do not let me concentrate on other tasks
I feel overwhelmed or sad if I eat food that I consider unhealthy
If, at some point, I eat something that I consider unhealthy, I punish myself for it
I avoid eating with people who do not share my ideas about healthy eating
A 2019 follow-up study showed that healthy orthorexia is associated with experiencing more positive and fewer negative emotions in everyday life, while the opposite is true for orthorexia nervosa.8 Because this is a new measure, we’ll have to wait for more studies to provide insight into this vital distinction.
At its core, orthorexia is “clean eating” taken too far.
Hopefully it’s clear that orthorexia is about much more than simply being health-conscious. As Dr. Bratman explains:
“Adopting a theory of healthy eating is NOT orthorexia. A theory may be conventional or unconventional, extreme or lax, sensible or totally wacky, but, regardless of the details, followers of the theory do not necessarily have orthorexia. …Enthusiasm for healthy eating doesn’t become ‘orthorexia’ until a tipping point is reached and enthusiasm transforms into obsession [sic].”
You can believe that diet profoundly impacts health, avoid specific foods, weigh and track all your food, and still go about your merry way without developing orthorexia nervosa.
But, if you feel your diet taking over your life, or if the thought of eating something off-plan makes you break into a cold sweat, it’s a good idea to seek help. Even though it’s not an officially recognized mental health disorder, many eating disorder specialists focus on treating individuals with orthorexia nervosa. The National Eating Disorders Association (NEDA) hotline is a good place to start.
Orthorexia Nervosa FAQs
Is orthorexia an obsession with healthy eating?
“Orthorexia” means wanting to eat “correctly.” The term may be used to describe disordered eating, as in orthorexia nervosa. That is an obsession or preoccupation with eating only specific foods that you consider healthy and avoiding foods you think are unhealthy.
What are the main warning signs or symptoms of orthorexia nervosa?
The defining characteristics are: (1) having strict food rules about what you will and will not eat based on your definition of “healthy,” and (2) those rules negatively impact your psychological, social, and/or physical well-being. Truly healthy diets should enhance, not detract from, your quality of life.
How common is orthorexia nervosa?
No one really knows because of problems with how orthorexia nervosa has been measured in the past. Estimates range from as few as 3 percent of people in the general population to more than 80 percent in health-focused communities, but those numbers may not be reliable.910
Is fasting or eating only one meal a day the same as orthorexia?
Orthorexia nervosa has to do with beliefs about food quality and eating only “healthy” foods. People may also use fasting to try to achieve health, but that isn’t the same as orthorexia. The same goes for excessive exercise. Both can co-occur with orthorexia, but they aren’t themselves orthorexic.
Is my ______ diet orthorexic?
No diet is inherently orthorexic, no matter how restrictive it is. Context always matters. You can’t decide if someone’s diet is orthorexic without knowing why they are following it and how it is impacting their emotional health, physical health, social relationships, occupation, and overall quality of life.
Lindsay Taylor, Ph.D., is a senior writer and community manager for Primal Nutrition, a certified Primal Health Coach, and the co-author of three keto cookbooks.
As a writer for Mark’s Daily Apple and the leader of the thriving Keto Reset and Primal Endurance communities, Lindsay’s job is to help people learn the whats, whys, and hows of leading a health-focused life. Before joining the Primal team, she earned her master’s and Ph.D. in Social and Personality Psychology from the University of California, Berkeley, where she also worked as a researcher and instructor.
Lindsay lives in Northern California with her husband and two sports-obsessed sons. In her free time, she enjoys ultra running, triathlon, camping, and game nights. Follow along on Instagram @theusefuldish as Lindsay attempts to juggle work, family, and endurance training, all while maintaining a healthy balance and, most of all, having fun in life. For more info, visit lindsaytaylor.co.