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Obesity

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...

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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...

Drug Dosing: Obese Patients

Drug Dosing: Obese Patients

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...

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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Confounding in Epidemiological Studies

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Related Experiment Video

Updated: Jun 7, 2026

Multidisciplinary Approach to Obesity Management: A Case Report

Multidisciplinary Approach to Obesity Management: A Case Report

Published on: May 30, 2025

The obesity paradox.

Dennis E Amundson¹, Svetolik Djurkovic, Gregory N Matwiyoff

¹Department of Pulmonary/Critical Care Medicine, Naval Medical Center San Diego, San Diego, CA, USA. dennis.amundson@med.navy.mil

Critical Care Clinics

|October 26, 2010

Summary

This summary is machine-generated.

The obesity paradox suggests that obese patients may have better survival rates for cardiovascular diseases and after surgery. This challenges traditional views, prompting a re-evaluation of obesity definitions.

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Area of Science:

Cardiology
Metabolic Health
Clinical Medicine

Background:

Obesity is a known risk factor for cardiovascular and peripheral vascular diseases.
The "obesity paradox" describes a potential survival benefit for obese individuals during acute cardiovascular events.
Existing research suggests obese patients may also experience better outcomes post-surgery and with certain chronic conditions.

Purpose of the Study:

To explore the phenomenon of the obesity paradox in cardiovascular health.
To investigate the potential survival advantages associated with obesity in specific clinical scenarios.
To consider the implications for the definition and understanding of obesity.

Main Methods:

Review of existing literature on obesity and cardiovascular outcomes.
Analysis of epidemiological data concerning obesity and survival rates.
Comparative studies on patient outcomes based on body mass index (BMI).

Main Results:

Obese patients experiencing myocardial infarction or congestive heart failure may exhibit improved survival.
Evidence suggests a survival benefit for obese individuals undergoing procedures like coronary artery bypass surgery.
Obese men with chronic hypertensive heart disease appear to live longer than normal-weight counterparts.
Obesity itself may independently confer a survival advantage, irrespective of other factors.

Conclusions:

The obesity paradox presents a complex challenge to established medical understanding.
Further research is needed to clarify the mechanisms behind this phenomenon.
A potential redefinition of obesity and its classifications may be warranted.
The nature and distribution of body fat could play a critical role.