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Obesity01:24

Obesity

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The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
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Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...
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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.
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Hypodermis01:02

Hypodermis

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The hypodermis (the subcutaneous layer or superficial fascia) is present directly below the dermis. It connects the skin to the underlying fascia (fibrous tissue) of the bones and muscles. It is not strictly a part of the skin, although the border between the hypodermis and dermis can be difficult to distinguish. The hypodermis consists of well-vascularized, loose, areolar connective tissue and adipose tissue, which functions as a mode of fat storage and provides insulation and cushioning for...
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Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
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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...
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Obesity: a 100 year perspective.

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This review explores the scientific understanding of obesity, defined as excess body fat. It covers causes, fat cell function, and various treatments, highlighting bariatric surgery

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Area of Science:

  • Obesity research
  • Metabolic science
  • Public health

Background:

  • Obesity is defined as excess body fat, impacting nutrient storage and hormonal responses.
  • Positive fat balance results from genetic and environmental factors, leading to diverse obesity phenotypes.
  • Understanding obesity requires examining food intake, fat storage, and cellular mechanisms.

Purpose of the Study:

  • To review the scientific basis of obesity over the last century.
  • To discuss methods for assessing body fat levels.
  • To explore various treatment modalities and their efficacy.

Main Methods:

  • Literature review of scientific publications on obesity.
  • Discussion of physiological mechanisms related to fat storage.
  • Analysis of treatment approaches including diets, medications, and surgery.

Main Results:

  • Obesity is multifactorial, influenced by genetics, environment, and behavior.
  • Fat cell size and number are critical in metabolic regulation.
  • Bariatric/metabolic surgery is the most effective weight loss treatment, with significant health benefits.

Conclusions:

  • Obesity is a complex public health issue with significant scientific and societal dimensions.
  • Effective management requires understanding underlying biological processes.
  • Continued research is essential for developing better prevention and treatment strategies.