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Related Concept Videos

Obesity01:24

Obesity

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 adipocytes...
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.
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

Drug metabolism, a critical process in the liver, involves two primary phases: Phase I reactions and Phase II conjugation. Obesity introduces significant alterations in this metabolic process, primarily due to fatty infiltration of the liver, leading to conditions such as nonalcoholic fatty liver disease (NAFLD). This condition can modify the activities of both Phase I and II enzymes, impacting how drugs are metabolized in obese patients.Phase I metabolism sees variable effects across...
Structures of the Endocrine System00:59

Structures of the Endocrine System

The intricate framework of the endocrine system encompasses a diverse array of glands, with their target tissues and organs strategically distributed throughout the body. Central to this network are the endocrine glands, specialized structures that lack ducts and release hormones directly into the interstitial fluid. Notably, the hypothalamus, a vital neuroendocrine organ situated in the brain, governs neural functions and serves as a potent source of hormonal regulation. Near the hypothalamus...
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...
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...

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Related Experiment Video

Updated: May 30, 2026

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis
08:34

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Published on: June 3, 2016

[Endocrine function in obesity].

Paula Álvarez-Castro1, Susana Sangiao-Alvarellos, Iria Brandón-Sandá

  • 1Servicio de Endocrinología, Hospital Lucus Augusti, Lugo, España.

Endocrinologia Y Nutricion : Organo De La Sociedad Espanola De Endocrinologia Y Nutricion
|August 10, 2011
PubMed
Summary
This summary is machine-generated.

Obesity disrupts endocrine function, affecting hormones like insulin, leptin, and growth hormone (GH). These changes, including impaired GH secretion and altered sex hormone levels, contribute to the complex health issues associated with obesity.

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Area of Science:

  • Endocrinology
  • Metabolic Disorders
  • Obesity Medicine

Background:

  • Obesity is linked to significant endocrine system disturbances.
  • Key changes include hyperinsulinemia, insulin resistance, and altered adipokine secretion (e.g., leptin).
  • The precise mechanisms and clinical implications of these endocrine alterations remain under investigation.

Purpose of the Study:

  • To summarize the endocrine dysfunctions associated with obesity.
  • To explore the mechanisms behind altered hormone secretion in obese individuals.
  • To highlight the clinical significance of these endocrine changes.

Main Methods:

  • Review of existing literature on obesity and endocrine function.
  • Analysis of hormonal profiles in obese versus non-obese populations.
  • Investigation of potential pathophysiological pathways.

Main Results:

  • Obesity is characterized by decreased growth hormone (GH) secretion, potentially due to somatostatin hypersecretion and increased free fatty acid levels.
  • Reduced ghrelin secretion and altered sex hormone levels (hyperandrogenism in women, decreased testosterone in men) are observed.
  • Cortisol production and clearance are increased, maintaining normal free cortisol levels; trends suggest elevated TSH and free T3.

Conclusions:

  • Obesity profoundly impacts multiple endocrine axes, including the somatotropic, reproductive, and adrenal axes.
  • Impaired GH secretion is a functional consequence of obesity, possibly reversible.
  • Understanding these endocrine disturbances is crucial for managing obesity-related health complications.