Anorexia and hypermetabolism
What is hypermetabolism? It is when the metabolic system is hyperactive so much that the person starts burning higher amounts of calories, leading to weight loss.
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What is hypermetabolism? It is when the metabolic system is hyperactive so much that the person starts burning higher amounts of calories, leading to weight loss.
Hypermetabolism or hypermetabolic conditions can occur in many different scenarios, particularly when the body needs to produce a lot of energy to heal itself. For example, when someone has suffered severe burns, multiple fractures, infection or sepsis, hyperthyroidism, traumatic brain injury, surgery, etc, the body will become hypermetabolic, burning a lot of calories to produce the energy necessary to heal.
If the body is hypermetabolic and burning a lot of calories, the individual also has to consume a lot of calories - supply needs to match demand.
When hypermetabolism occurs long term, it can cause insulin resistance, the breakdown of protein, carbohydrates, and triglycerides. Some of the serious symptoms that may also occur include:
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When a person experiences prolonged starvation, such as in the case of anorexia nervosa (AN), hypermetabolism may occur. If the body has insufficient calories from food, it starts to break down fat and muscle in order to supply energy to sustain life. This is considered a hypermetabolic state because the body is continually trying to produce energy in spite of the lack of external caloric intake. As a result of this, patients begin to lose weight and can eventually become malnourished.
When the body is in a hypermetabolic state and the individual begins treatment, medical supervision during the period of refeeding is very important. In extreme cases of prolonged starvation and hyper-metabolism, the body becomes depleted of many nutrients along with fats and proteins. If repeated too quickly, it can lead to electrolyte imbalances, nausea/vomiting, and even cardiac arrhythmias. Therefore, it is important to re-introduce food and calories slowly. It is especially important to work with a team of professionals that includes a dietitian, psychotherapist and medical doctor during this time of early treatment and refeeding.
Here are some basic facts to know if you or a loved one are being treated for anorexia: (1)
If a person is exercising appropriately that is healthy. However, if a person is exercising excessively as one of the symptoms of their disease in order to keep off calories, bear in mind that heavy exercise also increases the hypermetabolic state, meaning that the individual will likely need even more calorie repletion in order to recover a healthy weight. Moderate healthy exercise is encouraged. Obsessive, compulsive and “compensatory exercise” is not.
If you or a loved one is struggling with extreme calorie loss and experiencing a hypermetabolic state that may need medical treatment, reach out to your doctors. For help in treating eating disorders, talk with our team at Within Health.
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Disclaimer about "overeating": Within Health hesitatingly uses the word "overeating" because it is the term currently associated with this condition in society, however, we believe it inherently overlooks the various psychological aspects of this condition which are often interconnected with internalized diet culture, and a restrictive mindset about food. For the remainder of this piece, we will therefore be putting "overeating" in quotations to recognize that the diagnosis itself pathologizes behavior that is potentially hardwired and adaptive to a restrictive mindset.