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Exercise Caution: Physical Activity and Eating Disorder Recovery

Compulsive exercise is often a symptom of eating disorders. It is common for a child who is developing an eating disorder to take a sudden interest in running and other vigorous forms of exercise. Given that exercise is a symptom which is directly related to the energy imbalance that triggers and maintains a restrictive eating disorder, it is important for clinicians and caregivers to monitor and manage patients’ exercise during treatment and recovery.

When a patient has an active eating disorder, it is generally ineffective to use exercise or sports as an “incentive” to get him to eat more or gain weight. Even the patient who absolutely loves soccer, and says he would do anything to keep playing, probably won’t be able to eat enough to make that happen. The malnourished anorexic brain is just not capable of overriding symptoms, no matter how alluring the reward may be.

For people with eating disorders, exercise poses numerous medical risks including stress fractures, osteoporosis, muscle wasting, and heart arrhythmia. Further, exercise can be counterproductive to treatment goals when a patient needs to restore weight. For these reasons, I recommend that patients with Anorexia Nervosa or Bulimia Nervosa abstain from all physical activity until they meet the following criteria:

a.) Complete weight restoration
b.) Complete abstinence from binge/purge behaviors for at least two weeks
c.) Consistently eating complete, balanced meals with little resistance
d.) Sufficient hydration
e.) Willingness and ability to increase nutrition and hydration to compensate for activity
f.) Medically cleared to exercise by physician

Explaining the dangers of exercise to the eating disordered patient is important but rarely sufficient to curb the compulsion. Patients with exercise compulsion need an authoritative source to tell them directly, in no uncertain terms, that all exercise must be stopped until the above criteria are met. In my practice, the hiatus from exercise typically lasts for several months, but this varies widely based upon the patient’s severity of illness and response to treatment.

Abstaining from all physical activity means stopping sports, dance classes, martial arts, and any other extracurricular activity that involves movement. It also means no PE at school, no bike riding, no home workouts, no yoga, and no long-distance walking.

Parents can do a number of things to help prevent their ill child from exercising. They can obtain a doctor’s note to except him from PE class, they can call the coach to inform him that the child will not be able to play for the rest of the season, they can give him a break from his usual chore of walking the dog.

When the exercise compulsion is strong, more serious measures must be taken. Some parents may need to get rid of home exercise equipment, terminate their child’s gym membership, or hide her running shoes. Parents must be extremely vigilant in protecting their child from secretly exercising.

Any time spent behind closed doors presents an opportunity for the patient to succumb to the exercise compulsion. It is not unusual for anorexic patients to exercise in the middle of the night, to sneak out of the house to go running, or to do calisthenics on the bathroom floor. Sometimes it is necessary for parents to sleep in the same room with their child and provide round-the-clock supervision for weeks or months at a time in order to break the exercise compulsion.

Full nutrition and weight restoration often help tremendously in lessening the compulsion to exercise. Many recovering kids will lose interest in exercise once the compulsion has faded. These are often the kids who first began exercising in the context of their eating disorder, but never really enjoyed their activity. Once recovered, these kids will often return to lives that are not particularly active, and decide to pursue other interests instead, such as music, art, or a very busy social life.

For some children, exercise has been a part of their lives since they were very young, but took on a new intensity when the eating disorder arrived. For example, a 12-year-old girl who loves to dance and has taken ballet since preschool may suddenly start taking eight dance classes a week instead of her usual four. As another example, a teenage basketball player may begin rising at 4:00 AM to go jogging in addition to afternoon practices with his team. These kids suffer tremendously as the activities they love become tools for their eating disorder to use against them.

In my experience, these patients are often able to return to the sports and activities they previously enjoyed without compromising their recovery, so long as they are physically and mentally ready to do so, and so long as their activity is monitored and limited. The young dancer described above may return to her studio, once weight-restored and back in school, for three or four classes per week. The recovering teenage basketball player may be permitted to practice with his team, but would not be allowed to exercise outside of scheduled practices.

While it’s rarely effective to use sports as an incentive for a sick patient to get well, sports can be a great incentive for a recovered patient to stay well. Many patients, once physically and psychologically recovered, feel motivated to do whatever it takes to maintain their exciting new life. I have found that exercise contracts work well for these patients.

For example, my former patient, whom I will call Andy, played on a competitive year-round traveling soccer team. When Andy developed Anorexia Nervosa at age 14, his parents and I agreed that he would need to take five months off from soccer to restore his weight and focus on his recovery. Once he was feeling better, Andy became excited to rejoin his team.

Andy’s family and I supported his return to soccer so long as it did not interfere with his recovery. We developed a written contract which stated that Andy may participate in club soccer so long as he maintained his weight, ate all of his meals and snacks, drank 8 glasses of water per day, abstained from exercise outside of team practices, and attended monthly therapy sessions. We also agreed that he would drink a smoothie after each soccer practice and that one of his parents would travel with him to all tournaments to ensure that he ate enough to fuel his activity.

Certain solo long-distance endurance activities, such as cross country running and competitive swimming, pose particular risks for patients predisposed to eating disorders. This is in part due to their very high energy requirements, in part due to their solitary nature, and in part due to the extreme rigor of the activity which demands a high level of dedication. Not only do these factors attract young people who are competitive, driven, and dedicated (read: predisposed to eating disorders); they also create the perfect formula for triggering and perpetuating an eating disorder.

If a recovered person who had been a runner or a swimmer prior to getting sick expresses a desire to return to athletics, it may be preferable for him to choose a different sport. Team sports such as volleyball or basketball may be more conducive to sustained remission.

Activities with an artistic or aesthetic element, such as gymnastics, dance, figure skating, and diving, can pose a risk for those in recovery from eating disorders, particularly if body dissatisfaction and drive for thinness were major symptoms of the patient’s illness. If a former dancer/gymnast/athlete wishes to return to these activities, certain factors must be considered. In addition to the criteria for resuming exercise that I listed above, these young people should attain a certain level of body acceptance prior to returning to their activity. They need to feel at least somewhat comfortable in a leotard, and they must be strong enough to challenge or ignore any negative body thoughts that may arise. If a young person experiences a noticeable increase in eating disordered thoughts or behaviors upon returning to her activity, this is an indication that she likely needs more time off to recover before she can safely return.

It is important for dancers and athletes to return to a nurturing environment that does not encourage food restriction, weight loss, or winning at all costs. It is helpful for parents to speak with coaches and trainers to alert them of their child’s vulnerability and ensure that the atmosphere is conducive to health and well-being. There are dance teachers and coaches who encourage full nutrition, healthy body image, self-care, and a balanced approach to life. These adults can be positive forces in helping a young dancer or athlete sustain remission.

It is of utmost importance that family members and treatment professionals convey, through their words and their actions, that the patient’s physical and mental health are the number one priority. Participation in activities that jeopardize health or fuel emotional distress should be avoided. Participation in activities that bring joy and enhance well-being should be encouraged.

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Exercise and Eating Disorders: It’s Not What You Think

Exercise very often plays a role in the development of restrictive eating disorders, particularly Anorexia Nervosa (AN). Some people view exercise as “a form of purging” or “a way to get rid of calories.” These explanations seem to make sense in light of modern western society’s views on exercise, similar to the theory that people with AN restrict their calories in order to conform to society’s thin ideal. But like the thin ideal theory, the “exercise purging” theory is an erroneous attempt to make sense of a puzzling symptom in the context of modern society.

In AN, excessive exercise, just like food restriction, is a biologically-based symptom, driven by something beyond conscious control or awareness. Patients do not exercise “to burn calories,” although they may insist that burning calories is their motivation. Consider, for example, the fact that even patients who know they are too thin are motivated to gain weight (yes, such patients do exist), often cannot stop themselves from moving unless they are forced to do so. Young children with AN are especially susceptible to the drive to exercise even though they have no idea what calories are or how to burn them.

A little history may help to put this into context. People did not really exercise for the purposes of physical fitness and attractiveness prior to the “exercise boom” of the 1970’s and 1980’s. However, hyperactivity was a symptom of AN long before Jane Fonda’s exercise videos found their way into American living rooms.

The nineteenth-century British Physician William Gull, the first clinician to describe AN medically, was surprised by the seemingly boundless energy that his anorexic patients possessed despite their emaciated state. In his 1874 paper entitled Anorexia Nerovsa, he wrote the following description of a young anorexic girl: “The patient complained of no pain, but was restless and active…it seemed hardly possible that a body so wasted could undergo the exercise which seemed agreeable.” Clearly, this young woman was not motivated by the pursuit of a thinner body, as the idea of exercising to “burn calories” would not emerge until a century later.

Animal research has shown that the hyperactivity commonly associated with AN is rooted in neurobiology and may serve an adaptive evolutionary purpose. For example, activity-based anorexia can be experimentally induced in rats which, like humans, evolved as opportunistic omnivorous foragers. When food-deprived lab rats are given free access to a running wheel, they become hyperactive, lose large amounts of weight, and will often die unless they are removed from these experimental conditions. I highly doubt that these rats were running excessively to purge calories, ward off obesity, or pursue some unrealistic standard of rodent beauty.

So why would AN, which leads to numerous health problems, infertility, and death, remain in our gene pool for tens of thousands of years? Shan Gusinger, an evolutionary biologist and a psychologist, posits that AN has evolved in humans as a means of helping us flee from food-depleted environments. The restless energy, grandiosity, and lack of awareness of one’s starved body allowed prehistoric anorexics to lead their tribes in migrations from food-depleted areas to plentiful ones.

Once the anorexic leader and her tribe arrived in a plentiful environment, the tribe feasted, pressuring the anorexic leader to indulge in food with them. In the absence of modern society’s thin ideal and without our modern obesity hysteria, prehistoric anorexics may have been able to allow their families to feed them, restoring their health and fertility. Even if the anorexic herself died of her condition or was rendered infertile, her close genetic relatives survived and reproduced, thus ensuring the continuity of AN into the next generation.

In our modern world, where children are encouraged to exercise more and make “healthy” (e.g. lower calorie) food choices as early as kindergarten, it is no wonder that AN is still around. During the pre-teen years, when rapid vertical growth and pubertal development demand extra energy, girls and boys are hit hard with the social pressures to be thin (for girls) or lean and ripped (for boys). The rapid weight gain that is necessary for growth and development is feared and despised in these growing children (and often, sadly, in their parents and pediatricians).

Adding add fuel to the fire, the pre-teen years are when intense and time-consuming athletic training begins. Competitive sports provide socially-applauded outlets for the young anorexic’s hyperactivity. No one bats an eye at the 12-year-old dancer who spends hours each evening at her studio in preparation for her next audition, or the 11-year-old boy who plays multiple back-to-back games each weekend with his elite travelling soccer team. Meanwhile, these children are making “healthy food choices,” consuming too few calories and fats to keep up with normal growth, let alone intense daily exercise.

In these vulnerable children, their vertical growth is stunted, their pubertal development is halted, and their intense athletic drive is praised by adults. And before you know it, they have fallen down the rabbit hole and developed full-blown AN. In this way, hyperactivity serves as both a precipitating factor and a perpetuating factor in the development of AN.

In my next post, I will discuss the role of exercise in eating disorder recovery.

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Let’s Get Physical: Exercise in the Treatment of Mood and Anxiety Disorders

As the Olympic Winter Games are commencing tomorrow in Sochi, I feel inspired to write about the role of physical activity in mental health. This post will focus specifically on exercise in the treatment of mood and anxiety disorders.

Numerous studies have shown that regular exercise improves mood in people with mild to moderate depression. For those with severe depression or bipolar disorder, exercise alone is rarely sufficient, but exercise can play an adjunct role in helping patients recover and prevent relapse.

We know from Newton’s law of motion that an object at rest stays at rest unless a force acts upon it, and an object in motion stays in motion unless some force makes it stop. The same is true for human bodies. Paradoxically, sedentary people tend to have less energy and active people tend to have more.

Now, of course this begs the question of the chicken or the egg – it is likely that people become sedentary because they have little energy or stay active because they have a surplus. This is true. People seem to have “set points” for activity level just as they do for weight and mood. That being said, physical activity has an almost immediate effect on mood and energy level. Over time, consistent exercise helps to stabilize moods, improve sleep, reduce stress, and enhance motivation to continue moving.

For these reasons, I strongly encourage my patients who suffer from mood disorders or anxiety disorders to exercise regularly. In my opinion, exercise is every bit as important as therapy, medication, and sleep when it comes to mood and anxiety disorders.

As I have emphasized in previous posts, the mind is a series of conscious functions carried out by the brain, and the brain is part of the body. Physical health and mental health are one in the same. Despite what society, popular wisdom, and health insurance companies may tell us, there is no actual difference between a physical illness and a mental one. When you exercise your body, you are exercising your brain.

Unlike therapy or medication, exercise is cheap or even free. Unlike medication, which can have unpleasant or dangerous side effects, exercise is generally safe so long as you do it sensibly and moderately. Unlike therapy, which requires another person and an appointment, exercise can be done alone if you choose at a time that suits your schedule. Unlike therapy, which is typically one-on-one and indoors, exercise can be enjoyed inside or outside with your family, friends, classmates, or teammates.

Numerous times, I have been amazed at how much exercise improves my patients’ mental health. This is especially true for people who have historically been sedentary and embark on a new exercise routine as part of their treatment plan. For example, I am working with a 15-year-old girl whom I’ll call Elsa who suffered from severe depression and crippling anxiety. When I met Elsa last year, she hated exercise and barely had the energy to get out of bed. After months of encouraging her to try different enjoyable physical activities, she finally started biking with her mom and jogging with her neighbor. She is now in full remission from her depression, making excellent progress in tackling her anxiety, and training for her first 5K. She now wakes up at 7:00 am with plenty of energy and really enjoys exercising. I am so proud of her.

One of the more challenging aspects of incorporating exercise into a patient’s treatment plan is that sometimes the mental illness itself is part of the reason why the patient is inactive. Depressed people tend to lose interest in activities they once enjoyed. They feel unmotivated and chronically exhausted. Clearly, it is a challenge for them to do essential things like get dressed and go to school, let alone something “extra” and “optional” like exercise.

For these patients, I use a behavioral technique called behavioral activation. Here’s how it works: we agree upon a small, realistic exercise goal such as walking for 10 minutes three evenings a week. [Elsa’s initial idea was to do the Insanity DVDs she saw on an infomercial. Given that she hadn’t exercised in years, I told her that this idea was, frankly, insane, and I suggested something more moderate.] I have the patient choose an activity they enjoy (or at least one that they don’t hate) and a time of day when they’re likely to follow through (for example, not at 5:00 AM if they aren’t a morning person).

When possible and feasible, I encourage patients to exercise socially by attending a class, joining a sports team, taking lessons, or doing something active outdoors with their families. We make this activity part of their weekly schedule, writing it down (or, often, putting it in their smart phone) as if it were any other appointment or commitment. Most of the time, the patient achieves their initial goal because it is small, realistic, specific, and planned.

Achieving this initial exercise goal creates a feeling of success and personal satisfaction and enhances the person’s motivation to keep going. In addition, they experience a bit of a mood boost from the activity itself. Once the patient achieves the initial exercise goal, it is increased a little bit in frequency or duration.

Using the example above, the patient may walk for 20 minutes during the second week and 30 minutes during the third week. This gradual increase in frequency and duration continues for a number of weeks or months. Eventually, the patient has incorporated regular exercise into her lifestyle. The stress reduction, mood enhancement, and improvement in fitness level enhance her internal motivation to continue exercising.

Anxiety can also interfere with a patient’s plans to exercise. Many people who experience panic attacks are afraid of the physical sensations that result from exercise (rapid breathing, increased heartbeat, sweating), which closely resemble those of a panic attack.

Patients who have social anxiety may shy away from joining sports teams, taking dance classes, or going to gyms because they worry about being judged or making a fool of themselves. For example, Elsa had enjoyed dance classes and swimming in elementary school but later became socially anxious and self-conscious about wearing a leotard or swimsuit in front of her peers. For this reason, she chose to do biking and jogging which did not require such revealing attire. And now, for the record, Elsa does wear a swimsuit with only mild anxiety when she goes to the beach or the pool with her friends. Did I mention how proud of her I am?

For patients with eating disorders, exercise is altogether a different story. That will be the topic of my next blog post.