There are eight formally recognized eating and feeding disorders in the current psychiatric diagnostic manual (DSM-5-TR), plus several conditions that fall outside official classifications but are widely discussed in clinical settings. The three most well-known are anorexia nervosa, bulimia nervosa, and binge eating disorder, but the full picture is broader than most people realize. Here’s a complete breakdown of each one.
Anorexia Nervosa
Anorexia nervosa centers on extreme food restriction driven by an intense fear of gaining weight and distorted body image. Adults with anorexia typically have a BMI below 18.5, though the disorder can look different across ages and body types. It comes in two subtypes. The restricting type involves limiting food intake and sometimes exercising excessively. The binge-eating/purging type involves episodes of eating large amounts of food followed by self-induced vomiting or laxative misuse, on top of the overall pattern of restriction.
Anorexia carries serious physical consequences. It can damage the heart, weaken bones, disrupt hormones, and harm the digestive system. Among all psychiatric illnesses, eating disorders have the second highest mortality rate, behind only opioid addiction, and anorexia accounts for a disproportionate share of those deaths. One person dies as a direct consequence of an eating disorder roughly every 52 minutes in the United States.
Bulimia Nervosa
Bulimia nervosa involves repeated cycles of binge eating followed by compensatory behaviors meant to prevent weight gain. A binge episode means consuming an unusually large amount of food while feeling completely unable to stop. The compensatory behaviors that follow can include self-induced vomiting, laxative or diuretic misuse, fasting, or excessive exercise. For a clinical diagnosis, both the bingeing and the compensatory behaviors need to happen at least once a week for three months.
Unlike anorexia, people with bulimia often maintain a weight that looks “normal” to others, which can make the disorder harder to spot. The physical toll is still significant. Repeated vomiting erodes tooth enamel, damages the esophagus, and disrupts electrolyte balance in ways that can affect heart rhythm. The shame and secrecy surrounding binge-purge cycles also tend to worsen over time without treatment.
Binge Eating Disorder
Binge eating disorder (BED) is the most common eating disorder in the United States, with a lifetime prevalence of about 2.8%. It shares the binge episodes seen in bulimia, marked by eating large amounts of food with a feeling of lost control, but without the purging, fasting, or excessive exercise that follows. That distinction is key. Because there are no compensatory behaviors, people with BED are more likely to be overweight or obese, though not always.
BED causes real functional impairment. Data from a national survey found that nearly 63% of people with the disorder experienced some level of impairment in daily life, and about 19% reported severe impairment. It affects women at roughly twice the rate of men (1.6% vs. 0.8% in any given year). Despite being common, BED went unrecognized as a standalone diagnosis until 2013, which means many people still don’t realize it’s a clinical condition rather than a lack of willpower.
Avoidant/Restrictive Food Intake Disorder (ARFID)
ARFID involves an extremely limited range of foods or very low overall food intake, but for reasons that have nothing to do with body image or fear of weight gain. People with ARFID may avoid food because of its texture, smell, or appearance, because of a fear of choking or vomiting, or simply because they have very little interest in eating. It’s most often identified in children, but it can persist into adulthood.
The line between ARFID and ordinary picky eating comes down to consequences. A child who refuses green vegetables but eats a reasonable variety of other foods and grows normally is just a picky eater. A child with ARFID would rather go an entire day without food, even while hungry, than deal with the discomfort eating causes them. When the avoidance leads to nutritional deficiencies, falling off a normal growth curve, or significant weight loss, it crosses into clinical territory.
Pica
Pica is the persistent eating of non-food substances: dirt, chalk, paper, ice, paint chips, soap, or similar items. To qualify as a disorder, the behavior has to last at least one month and be inappropriate for the person’s developmental stage (a toddler mouthing objects doesn’t count). Pica can occur in children, pregnant individuals, and people with intellectual disabilities, though it also appears in otherwise healthy adults. The main dangers are poisoning (especially from lead paint), intestinal blockages, and infections from whatever is being consumed.
Rumination Disorder
Rumination disorder involves repeatedly bringing food back up from the stomach into the mouth after eating, then re-chewing, re-swallowing, or spitting it out. This is not the same as vomiting. It’s effortless, doesn’t involve retching or nausea, and the food that comes up is usually undigested. The behavior needs to continue for at least one month to meet the diagnostic threshold. It can occur in infants, children, and adults, and in some cases it appears to be almost automatic or even pleasurable rather than distressing.
Other Specified Feeding or Eating Disorder (OSFED)
OSFED is a diagnosis for people who have a clinically significant eating disorder but don’t meet the full criteria for anorexia, bulimia, or BED. This is not a “lesser” diagnosis. People with OSFED experience real distress and real physical consequences. The DSM-5-TR lists five specific presentations:
- Atypical anorexia nervosa: All the features of anorexia, including significant weight loss and fear of gaining weight, but the person’s current weight is still within or above the normal range. This is more common than many people expect, and the medical risks can be just as serious.
- Low-frequency bulimia nervosa: Binge-purge episodes that meet all other criteria for bulimia but happen less than once a week or have been occurring for fewer than three months.
- Low-frequency binge eating disorder: Binge episodes that meet all other criteria for BED but occur less than once a week or for fewer than three months.
- Purging disorder: Regular purging (vomiting, laxative use, diuretics) to control weight or shape, but without binge eating episodes.
- Night eating syndrome: Repeated episodes of eating large amounts of food after the evening meal or after waking up during the night, with full awareness and recall of the eating, causing significant distress.
Unspecified Feeding or Eating Disorder (UFED)
UFED is reserved for situations where someone clearly has a problematic eating pattern that causes distress or impairment, but it doesn’t fit neatly into any of the categories above. It’s also used when a clinician doesn’t have enough information yet to make a more specific diagnosis, such as in an emergency room visit. It serves as a clinical placeholder that still acknowledges the disorder is real and warrants treatment.
Orthorexia: Not Official, but Increasingly Recognized
Orthorexia nervosa is not in the DSM-5-TR, but it comes up frequently in clinical discussions and media coverage. It describes an obsessive focus on eating “pure” or “healthy” food that becomes so rigid it impairs daily life, social functioning, or nutritional adequacy. Unlike ARFID, where people avoid food based on texture or sensory discomfort, people with orthorexia restrict their diet because of a compulsive drive to be as healthy as possible. Researchers have proposed formal diagnostic criteria, and there’s growing evidence that it’s a distinct condition, but measurement tools are still being refined.
How Treatment Works
The most widely supported treatment for eating disorders in adults is a specialized form of cognitive behavioral therapy called CBT-E (enhanced). It targets the thought patterns and behaviors that keep the disorder going, particularly the tendency to judge self-worth almost entirely through body shape and weight. A typical course runs 20 to 40 sessions, starting with twice-weekly appointments that taper as progress builds. For adolescents with anorexia, family-based treatment, where parents take an active role in re-establishing healthy eating patterns, has the strongest evidence.
When outpatient therapy isn’t enough, options include intensive outpatient programs, partial hospitalization, and residential treatment centers. Other therapeutic approaches like dialectical behavior therapy (DBT) are also used, particularly when emotional regulation is a central struggle. Recovery timelines vary widely depending on the disorder, its severity, and how long it’s been present, but early intervention consistently leads to better outcomes across all types.