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Related Concept Videos

Anorexia Nervosa01:28

Anorexia Nervosa

Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
Major Hormones and Their Functions01:27

Major Hormones and Their Functions

Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.
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Adrenal Gland Disorders

Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
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Bulimia nervosa is a complex and severe eating disorder characterized by a cyclical pattern of binge-and-purge eating pattern. It generally involves an episode of binge eating, followed by compensatory behaviors such as vomiting, excessive exercise, laxative use, or fasting, to prevent weight gain. Despite often maintaining a normal weight, individuals with bulimia are intensely preoccupied with their body image and harbor an overwhelming fear of gaining weight. This can contribute to the...
The Endocrine System01:29

The Endocrine System

The endocrine system is an extensive network of glands – organs or tissues in the body that create chemicals that control many bodily functions, that secrete hormones, which are chemical messengers that play essential roles in regulating various bodily functions. These hormones are secreted into the bloodstream and travel throughout the body. They require specific receptors to convey signals to cells possessing these corresponding receptors. This complex signaling mechanism ensures that every...
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Hyperthyroidism II: Pathophysiology

Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...

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Assessing Activity-based Anorexia in Mice
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Published on: May 14, 2018

Endocrine abnormalities in anorexia nervosa.

Elizabeth A Lawson1, Anne Klibanski

  • 1Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.

Nature Clinical Practice. Endocrinology & Metabolism
|June 11, 2008
PubMed
Summary
This summary is machine-generated.

Anorexia nervosa (AN) involves endocrine dysfunctions like hypogonadotropic hypogonadism and bone loss. Some hormonal changes persist post-recovery, potentially increasing relapse risk in this eating disorder.

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Area of Science:

  • Endocrinology
  • Psychiatry
  • Bone Metabolism

Background:

  • Anorexia nervosa (AN) is a severe psychiatric disorder with significant medical complications and mortality.
  • Key endocrine abnormalities in AN include hypogonadotropic hypogonadism, hypercortisolemia, growth hormone resistance, and sick euthyroid syndrome.
  • Appetite-regulating pathways and adipokine signaling are altered due to decreased fat mass.

Purpose of the Study:

  • To review the primary endocrine alterations observed in anorexia nervosa.
  • To highlight the significant bone loss associated with AN.
  • To discuss the potential role of persistent endocrine changes in AN recurrence.

Main Methods:

  • This review synthesizes existing literature on endocrine and metabolic changes in anorexia nervosa.
  • Focus is placed on hormonal dysregulations and their impact on bone health.
  • The review considers adaptations to starvation and persistent changes post-recovery.

Main Results:

  • AN is characterized by multiple endocrine dysfunctions, including hypogonadotropic hypogonadism and altered thyroid function.
  • Significant bone loss, a major complication, is frequently observed in patients with AN.
  • Some endocrine abnormalities may persist even after nutritional rehabilitation, suggesting a role in long-term health and relapse.

Conclusions:

  • Endocrine alterations are central to the pathophysiology and clinical presentation of anorexia nervosa.
  • Bone loss is a critical complication requiring attention in AN management.
  • Persistent endocrine changes may contribute to the vulnerability for recurrent AN episodes.