Eating disorders may include individual or multiple combinations of behaviours, which may change over time, but the thought processes often remain the same for people who struggle over a number of years. Behaviours may include restriction (self-starvation) bingeing (eating a significantly larger portion of food than would be considered reasonable for a non-eating disordered person, purging (using behaviours to compensate for calories consumed, including self-induced vomiting, misuse of laxatives, or compulsive exercise).

While some may find it useful to put a label to what they are struggling with, it is perfectly normal for individuals to go through changes in behaviours over the course of their illness and recovery. For example, someone who has struggled with restriction may begin to struggle with bingeing and/or purging or vice versa. This can be extremely distressing to the individual but highlights the point that in the end, eating disorder behaviours (whatever form they may take) are coping mechanisms. The emphasis needs to be placed on how the behaviour impacts the person’s life rather than what the individual behaviour is and how that might be used to categorize a patient into an overall diagnosis (which is more relevant to clinicians than it is to the individual struggling).

bingeing/binge eating

Bingeing is generally defined as consuming, or engaging in some activity, in a large quantity over a relatively short period of time. In terms of eating disorders, this amounts to eating a lot in a short period of time. It is categorized as either objective (something most people would agree, is a large quantity of food as compared to "normal") or subjective (the individual feels they are eating a large quantity of food, but is not in fact consuming any more than is "normal.")

It is important to note that "normal" is a relative term which makes definitions more difficult.

Bingeing, or compulsive eating, as an eating disorder behaviour is quite different from what some describe as "reactive eating:" when the body is deprived of nutrition leading to binge/restrict or binge/purge/restrict cycles that perpetuate themselves. If your body is nutrient deprived, it will scream out for nutrition. This is entirely normal

Sufferers often face a great deal of stigma in our diet-and-weight-loss-centric culture. However, dieting is not a successful solution to bingeing as it does not address the underlying issues and cycles of restrictive eating will only perpetuate the behaviour.


To purge something is to get rid of it, in the case of eating disorders, to get rid of food that has been ingested either by self-induced vomiting, laxative abuse, enemas, and/or exercise (though this will be addressed as a topic unto itself.)

Purging is an extremely concerning behaviour as it can result in serious, sometimes fatal, physical complications including: electrolyte imbalance (which can lead to sudden cardiac arrest), dental erosion, esophageal tears, and/or Barrett's esophagus (a condition in which the lining of the esophagus is damaged by repeated exposure to stomach acid, which changes the nature of the cells, and can potentially lead to adenocarcinoma.) Laxative abuse can also severely alter the bowel's ability to function. Chronic use of diuretics can also lead to hypotension and kidney failure as well severe electrolyte disturbances (Psych Central, Binging & Purging.)

Bingeing and purging often go hand-in-hand, as is seen bulimia nervosa, but that is not always the case. Purging can occur with any eating disorder diagnosis.

Restriction involves limiting nutritional intake. It can occur in any eating disorder and can lead to severe physical health consequences such as bradycardia, electrolyte deficiencies, vitamin and mineral deficiencies, osteopenia and osteoporosis, diminished concentration and cognitive abilities, hypotension, and hypoglycemia which can result in coma and death.

Long-term restriction can lead to (though not necessarily) being underweight; however, serious and potentially fatal consequences from restriction can occur at any weight. The body slows metabolism to compensate as best it can, but eventually it will consume its own tissues in order to come up with needed nutrients to keep the vital organs functioning as long as possible. Lab values (blood work) may appear normal in many cases even when severe deficiencies are present in the body's cells, critical nutrients and electrolytes are "stolen" from the intra-cellular spaces in order to keep the blood levels as stable as possible. Even in cases of severe malnutrition, lab values can remain within normal limits over 50% of the time, this can be misleading, invalidating, and even delay care and necessary treatment (NCBI article on the usefulness and limitations of lab values in the assessment of eating disorders.) It is quite common for restriction to lead into bingeing, becoming a cycle of behaviours that can be quite distressing to the individual.

Restriction is often viewed favourably or as a manifestation of self-control and this is a dangerous idea that stems from a very diet-focused. Restriction is not synonymous with control, there is no hierarchy of eating disordered behaviours, nor does restriction serve as way to calm oneself effectively. Restricting actually increases general anxiety in individuals though they may find they feel more detached and "calm" due to physical exhaustion; their body is on alert for food and is in a threatened state so long as the deprivation continues.



Chewing and spitting may not seem like a harmful behaviour, but it does have certain health complications. Chewing is the first step in the digestive process and sets into motion a whole cascade of hormonal and chemical signals in the body.

People who chew and spit out food can end up with dental problems, including cavities and gum disease. Chewing food also signals stomach acids to kick in, ready to do their job of digesting food. But without the actual food to digest, this may cause stomach problems.

Though studies are limited, there are questions around insulin release and potential insulin resistance in patients who chew and spit.


Anorexia athletica is not formally recognized in the current DSM (V), but is often discussed in relation to eating disorders. It is similar to, though distinct from, other eating disorders and the use of exercise as a disordered behaviour.

Anorexia athletica is more common in those who participate in sports, exercise and physical fitness where leanness is the primary focus, though calorie restriction and a dietary focus can come into play as well.

Exercise and dietary restriction have a number of health complications; a common occurrence in cis-gendered women with anorexia athletica is "female athlete triad syndrome" (FATS). The triad consists of low energy availability (especially in relation to high levels of activity) leading to amenorrhea or oligomenorrhea (period loss or disruption to the normal menstrual cycle) and osteopenia/osteoporosis.

This is another article written by Gwyneth Olwyn of the Eaing Disorder Information Network about anorexia athletica, which explains how it manifests and also the criteria for understanding and recognising anorexia athletic, which include:

"Here are the six facets that are used to determine whether anything has become an addiction (including exercise):

  1. Salience: does the activity become the most important one in a person’s life? Do they think about it more than anything else? Do they crave it or feel they are suffering without it? As soon as they are not doing the activity are they planning when they can next do the activity? Do they forego other previously pleasant activities in their lives so they can do the activity in question?

  2. Mood modification: That’s the subjective feeling of the “high”. The feeling of “in the zone” or “meditative” or “calming”, “neutralizing other stresses”.

  3. Tolerance: Needing to increase the amount and time dedicated to the activity to get the same levels of mood modification.

  4. Withdrawal Symptoms: Irritability, short-tempered, jumpiness, anxiety when unable to do the activity in question.

  5. Conflict: Interpersonal issues arising with loved ones and friends as a result of the activity. Family and friends expressing their anxiety, concern or irritation with the person’s focus on the activity. Intrapersonal conflict where the person experiences guilt or anxiety that she is harming herself and others with her focus on the activity.

  6. Relapse: Attempts to avoid or moderate the involvement in the activity are punctuated with repeated returns to the activity at a quickly restored or even heightened level than before.”


While not in the current DSM (V), the psychiatric Bible of diagnoses, orthorexia is a commonly referred to issue in the context of eating disorders. The term "orthorexia nervosa" literally means "a fixation on righteous eating" (NEDA, orthorexia nervosa.) The obsession in this situation is related to eating what is deemed "healthy" (good) food versus food's that are generally considered indulgent or "unhealthy" (bad.)

Of course there is no inherent morality in food, there are just strong cultural attitudes that influence our thinking about healthy eating and villainize certain foods and/or food groups. The increasing attention on obesity, diabetes, heart disease, and cancer contributes to an increasingly diet-focused culture. Research is ongoing, but headlines are often created from incomplete and/or biased studies which are taken up in the media and spread widely without complete understanding or all the facts.

Following a healthy diet in itself, does not mean you are suffering from orthorexia, and there is nothing wrong with eating healthily. Unless, however, 1) it is taking up an inordinate amount of time and attention in your life; 2) deviating from that diet is met with guilt and self-loathing; and/or 3) it is used to avoid life issues and leaves you isolated and unhappy.