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Related Concept Videos

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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Lung Capacity01:47

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The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
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Drug Dosing: Obese Patients01:21

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In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
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Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

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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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Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

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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...
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Pleura of the Lungs01:13

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The lungs are nestled in a cavity, shielded by the pleura. The pleura, a form of serous membrane, wraps around each lung. This membrane arrangement consists of two layers: the visceral and parietal pleurae. The visceral pleura lines the surface of the lungIn contrast, the parietal pleura is the outer layer and contacts to the thoracic wall, the mediastinum, and the diaphragm. The hilum is the point of connection between the visceral and parietal layers. The space between the parietal and...
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Related Experiment Video

Updated: Feb 7, 2026

Intraperitoneal Glucose Tolerance Test, Measurement of Lung Function, and Fixation of the Lung to Study the Impact of Obesity and Impaired Metabolism on Pulmonary Outcomes
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The effect of obesity on lung function.

Anne E Dixon1, Ubong Peters1

  • 1a Division of Pulmonary and Critical Care Medicine , University of Vermont Larner College of Medicine , Burlington , Vermont , USA.

Expert Review of Respiratory Medicine
|July 31, 2018
PubMed
Summary

Obesity significantly impacts lung function through mechanical and inflammatory changes, leading to respiratory symptoms like dyspnea and wheezing in adults and children. Understanding these effects is crucial for managing obesity-related respiratory diseases.

Keywords:
Airway hyperreactivityadipose tissuepulmonary function

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Area of Science:

  • Pulmonary Medicine
  • Obesity Research

Background:

  • Obesity is a global epidemic with significant respiratory implications.
  • Obese individuals frequently experience respiratory symptoms and diseases.

Purpose of the Study:

  • To review the literature on the relationship between obesity and lung function.
  • To explore the mechanical and inflammatory effects of obesity on pulmonary function.

Main Methods:

  • Literature review of studies on obesity and lung function.
  • Analysis of mechanical and inflammatory pathways involved.

Main Results:

  • Obesity alters lung and chest wall mechanics, contributing to asthma and asthma-like symptoms (dyspnea, wheeze).
  • Excess adiposity increases inflammatory cytokines and immune cells, potentially causing lung disease.
  • Current pulmonary function tests and BMI may not fully capture these mechanical effects.

Conclusions:

  • Obesity profoundly affects respiratory function, increasing the burden of respiratory disease.
  • Mechanical and inflammatory factors of obesity alter lung mechanics and function.
  • The role of adipose tissue mediators in altered lung function requires further investigation.