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The surprising reasons we purge

the reasons we purge

Have you ever wondered why some people purge? Purging behavior occurs on a spectrum, from people who do it only occasionally to people who do it often as part of an eating disorder.

The reasons people purge vary. Purging is sometimes a normalized social behavior. Some people purge due to physical discomfort from having a full stomach. Most attempt to use purging in an attempt to lose and/or control weight. Some feel tremendous physical and emotional discomfort after eating. Others experience great physical and emotional relief in purging. When we understand why people purge, we can better help them find other ways to manage the discomfort driving the purge.

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In this article we will review the four major reasons for purge behavior:

  1. Socialized purges: these are socially accepted purge behaviors that are openly discussed in society
  2. Bonding purges: teens and young adults may engage in bonding with friends by purging together
  3. Weight-loss purges: purging can seem like an easy way to lose weight, especially after eating more than the person perceives is appropriate and/or binge eating
  4. Soothing purges: some people experience a positive soothing quality when purging

Types of purging behavior

Purging behavior includes:

  • Self-induced vomiting
  • Laxatives, diuretics and weight-loss medication
  • Compensatory exercise

The majority of serious purging is based on the idea of reducing calories in the body based on the mistaken assumption that weight is directly based on calories digested. But it is important to understand that purging can serve a variety of purposes in our lives.

Purging behavior is often not as “abhorrent” or “disgusting” as it may seem. Most of the reasons for a purge make a sort of sense—they can serve a very real purpose in a person’s life. It is only when a person can understand the behavior that they are able to replace it with more adaptive ones.

Cheat Sheet: Parenting Eating Disorder

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The 6 basic steps you need to follow to help your child recover from an eating disorder.

Purging and eating disorders

Purging behavior is not limited to Bulimia Nervosa. It can also be seen with Anorexia Nervosa, Binge Eating Disorder, OSFED, and many subclinical eating disorders. Purging behavior can even be a stand-alone disorder.

It’s important to know that purging to control weight rarely “works.” The body is very efficient and can adjust to purging behavior in order to maintain weight status. Thus, many people who attempt to use purging to reduce weight find themselves frustrated because it doesn’t “work.”

Purging of all types, at any level, has been correlated with other risky behaviors. These include smoking, binge drinking, and drug use. One recent finding showed that 13% of North American girls reported purging behaviors in mid-adolescence.

Reasons we purge

There are four main reasons for using purge behavior. The goal is to help you understand why someone you love is purging and how you can help them find alternative coping mechanisms. Purging doesn’t come from nowhere—there is a reason it “works.” 

The drive to purge typically involves biological, physiological, psychological, and/or social reasons. The most common reasons for purge behavior boil down to physical and/or psychological distress, often due to social pressure from diet culture to stay thin. 

When viewed through this lens, it’s easier to bring compassion and understanding to purge behavior and help the person find new coping methods. 

Purging, like all eating disorder behaviors, should be approached with understanding and compassion. This will result in better success in supporting recovery.

1. Socialized purges

Socialized purges are socially accepted purge behaviors that are openly discussed in society. The most common example takes place at large meals like Thanksgiving. Many people will talk about engaging in vigorous exercise before or after Thanksgiving dinner. They attempt to “work off” the calories from the meal.

Many family tables feature one or more parents mentioning that they will take a little less food. They say they didn’t exercise that day, and need to compensate. Or they may take a little more food because they “were good.” They say they can eat more because they exercised or restricted food earlier in the day. This is called “compensatory behavior” and is a form of calculation in which food is “earned” with the appropriate behavior.

People regularly say things like:

  • I’m going to have to put in some extra miles tomorrow after all these cookies
  • I shouldn’t be eating this, but I’ll go to the gym to make up for it
  • I skipped breakfast so that I could indulge tonight
  • I’ll have to skip breakfast tomorrow to make up for this meal
  • I can eat this cupcake because I burned 500 calories on the treadmill today
  • I’m off to burn 500 calories in spinning class so that I can enjoy dessert tonight.

This is socially normalized behavior, but it is also eating disorder behavior. Parents should be aware that when socialized purges are normalized, we open the door to eating disorders.

We should eliminate socialized purges and any form of food or exercise compensatory behavior from our children’s lives. Food should never be “earned” or “worked off.” It should be enjoyed and appreciated as a critical element of life.

2. Bonding purges

It is not uncommon for teens and young adults to engage in bonding with friends by purging. This may involve group vomiting, drinking laxative teas, skipping meals, and exercising after eating a meal.

Friendships are often the places where people first engage in purging behaviors. They become normalized and attractive as a result. Through friendships, people feel a sense of critical belonging and understanding. When purging becomes a part of a friendship it can become a “sticky” behavior that is done together and can spread to other friendships or become a solo practice.

The most common social example of this is sororities. Large groups of sorority sisters will share purge behaviors and “secrets” about how to purge. Many will stop doing these purge behaviors once they leave the social circle. But the baseline behavior is already normalized and reinforced, and some inevitably continue to use purging after they graduate. Socialized purges leave a person vulnerable to future mental health conditions including depression and anxiety.

Additionally, even “mild” purging behavior is correlated with high-risk behaviors including binge drinking, smoking, and drug use.

If a person is engaging in bonding purges, they may not have a diagnosable eating disorder. But all purging behavior is still a significant concern. A percentage of people who engage in bonding purges may develop additional eating disorder symptoms and behaviors.

Early intervention can make a significant impact. If you believe your child is engaging in social purges, get some coaching and support to find out how you can help them stop.

Four reasons we purge

3. Weight-loss purges

We live in a society that is best described as Diet Culture. This means we have normalized and encouraged dieting for generations. But dieting is linked to higher lifetime body weight and significant health complication, including eating disorders.

Purge behavior can seem like an easy way to lose weight without cutting down on food eaten. However, purging, like all forms of weight control, does not benefit health and carries significant complications.

The desire to achieve a lower body weight is pervasive. It is especially pernicious among teenage girls, the population most vulnerable to developing eating disorders. Dieting is the most powerful predictor of an eating disorder.

Diet culture as a reason we purge

Diet culture promotes low body weight at any cost. There are countless diet programs available to support people who want to pursue intentional weight loss. But our bodies are finely tuned to maintain their own healthy body weight. This is regardless of what we would like that weight to be. Any restriction causes a healthy and intense hunger response. This often results in binge eating or eating beyond the point of physical comfort.

Often when a person is binge eating, they are driven by extreme bodily needs. In fact, restricting food is the No. 1 reason for binge eating. When binge eating, people enter a state of emotional disconnection. It’s as if the body turns the mind off so that it can take over and get what it needs.

While binge eating, a person is typically not aware of how much they are eating. Nor are they able to stop themselves. Once a person has “succumbed” to their natural biology and eaten food in response to their hunger, they may turn to purge behaviors to compensate. This can relieve both the physical discomfort and the emotional distress of “over” eating.

Even people who maintain very restricted diets and eat very little food may engage in purging. They believe it is necessary to maintain their diet and/or low weight. In this way, purging can become a part of maintaining a diet. It may occur even without binge-eating episodes.

For example, someone who is on a calorie-restricted diet may eat very little but still purge. They want to “get rid” of any calories that they believe put them over their daily goal. Someone who is on a carb-restricted diet may attempt to purge after a carb-laden meal. But they will not necessarily purge after a no-carb meal.

Cheat Sheet: Parenting Eating Disorder

Free Download: How To Parent A Child With An Eating Disorder

The 6 basic steps you need to follow to help your child recover from an eating disorder.

Purging for weight loss

Purging for weight loss can seem like a “smart” way to manage the pressures of maintaining low body weight. It appears to solve problems for the strict dieter who occasionally or often goes beyond the boundaries of their diet.

Purge behaviors can become dangerously compulsive. They often coexist with Binge Eating Disorder, Anorexia Nervosa, and OSFED, or become chronic in the form of Bulimia Nervosa.

When a person is engaging in purge behavior they need intensive care. Ideally, they need providers who understand the dangers of diet culture and work from a non-diet perspective.

Providers should not be weight-conscious or promise that a person will not gain weight in eating disorder recovery. They should definitely not promise weight loss. These approaches are outdated and often deepen the underlying reasons for purge behavior.

4. Soothing purges

This may surprise you. Many people who develop chronic purging behaviors experience a positive soothing quality to the action of purging. Eating disorders, especially Bulimia Nervosa, can be described as Maladaptive Coping Mechanisms, which are subconscious methods to soothe anxious feelings.

Bulimia has been linked to underlying problems with impulsivity. This can be defined as urgency, sensation seeking, lack of premeditation, and lack of perseverance.

Lacking self-soothing tools

People who develop Bulimia tend to lack the ability to self-soothe or calm themselves when upset. To compensate, they seek external behaviors such as purging, substance use, and self-harm. These behaviors are sought on a subconscious and incredibly urgent basis. This is why purging behavior can sometimes be described as “addictive,” since it engages a response similar to addictive substances.

People who have Bulimia are more likely to engage in self-harm behavior. They harm at rates between 25 and 75 percent reported in various studies. Just like Bulimia, self-harm may seem like a strange way to soothe oneself. But they are both surprisingly consistent as coping behaviors. 

If you believe your child is using purging to self-soothe, it’s best to get some support and coaching. Most parents benefit from strategic ideas that will increase their child’s motivation for recovery. Aggressive approaches with someone who is using purge behavior to self-soothe typically backfire. 

Cheat Sheet: Parenting Eating Disorder

Free Download: How To Parent A Child With An Eating Disorder

The 6 basic steps you need to follow to help your child recover from an eating disorder.

Treatment for purging behavior

The reasons for purge behavior are different for everyone. But all people who purge will benefit from professional support so they can build adaptive coping mechanisms. These adaptive methods will help them process discomfort, pain, anxiety, and fear without purging.

They offer new ways of emotional soothing that don’t involve using external agents like food, alcohol, and drugs. Recovery typically involves learning new skills and developing a social network that supports ongoing treatment.

Treatment for soothing purges should come from a place of compassion and acceptance. A person in recovery should feel supported as they explore the reasons behind their purge behavior. Only then can they begin the process of replacing their eating disorder behavior with more adaptive coping methods.

Ginny Jones is on a mission to empower parents to help their kids recover from eating disorders, body image issues, and other mental health conditions.  She’s the founder of, an online resource supporting parents who have kids with eating disorders, and a Parent Coach who helps parents who have kids with mental health issues.

Ginny has been researching and writing about eating disorders since 2016. She incorporates the principles of neurobiology and attachment parenting with a non-diet, Health At Every Size® approach to health and recovery.

See Our Parent’s Guide To The Different Eating Disorder Behaviors

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