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Related Concept Videos

Obesity01:24

Obesity

1.4K
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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Timing and Consequences on Behavior01:08

Timing and Consequences on Behavior

404
In operant conditioning, the timing of reinforcement is crucial. For animals like rats and cats, immediate reinforcement (within a few seconds) is much more effective than delayed reinforcement. For example, a food reward for a rat needs to follow within 30 seconds of pressing a bar to be effective. 
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
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Drug Dosing: Obese Patients01:21

Drug Dosing: Obese Patients

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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...
269
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution01:25

Pharmacokinetics in Obese Patients: Drug Absorption and Distribution

287
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...
287
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

191
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...
191
Titration Calculations: Weak Acid - Strong Base03:55

Titration Calculations: Weak Acid - Strong Base

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Calculating pH for Titration Solutions: Weak Acid/Strong Base
For the titration of 25.00 mL of 0.100 M CH3CO2H with 0.100 M NaOH, the reaction can be represented as:
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Multidisciplinary Approach to Obesity Management: A Case Report
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Obesity and sarcoidosis: consequence or contributor?

Yvette C Cozier1, Praveen Govender2,3, Jeffrey S Berman2,3

  • 1Slone Epidemiology Center at Boston University.

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Obesity may increase sarcoidosis risk and worsen symptoms, with corticosteroid treatment further raising BMI. More research is needed to understand this complex relationship for prevention and treatment.

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Area of Science:

  • Immunology
  • Epidemiology
  • Public Health

Background:

  • Sarcoidosis is a multisystem inflammatory disease of unknown etiology.
  • Obesity is a complex condition affecting numerous physiological factors.
  • The interplay between obesity and sarcoidosis remains incompletely understood, presenting a 'chicken and egg' scenario.

Purpose of the Study:

  • To review the multifaceted roles of obesity in sarcoidosis.
  • To examine obesity's impact on sarcoidosis morbidity and incidence.
  • To explore obesity as a potential risk factor and consequence of sarcoidosis.

Main Methods:

  • Review of existing literature and prospective epidemiologic studies.
  • Analysis of studies investigating the association between obesity and sarcoidosis risk.
  • Examination of the bidirectional relationship between obesity and sarcoidosis treatment.

Main Results:

  • Obesity appears to exacerbate sarcoidosis symptoms.
  • Corticosteroid therapy for sarcoidosis is associated with increased Body Mass Index (BMI).
  • Four prospective studies indicate a significantly increased risk of sarcoidosis in obese individuals, with risk estimates ranging from 1.42 to 3.59.

Conclusions:

  • Obesity can be both a consequence of sarcoidosis treatment and a contributor to disease risk, potentially via a pro-inflammatory environment.
  • Prospective epidemiologic cohort studies are crucial for elucidating the etiology of sarcoidosis.
  • Further research may reveal new avenues for sarcoidosis treatment development and prevention strategies.