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Obesity01:24

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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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Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

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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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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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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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What is Metabolism?00:52

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A Chronic High-Intensity Interval Training and Diet-Induced Obesity Model to Maximize Exercise Effort and Induce Physiologic Changes in Rats
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Does Metabolically Healthy Obesity Exist?

Araceli Muñoz-Garach1,2, Isabel Cornejo-Pareja3, Francisco J Tinahones4,5

  • 1Department of Endocrinology and Nutrition, Virgen de la Victoria Hospital, Málaga University, Málaga 29010, Spain. aracelimugar@gmail.com.

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Summary

Metabolically healthy obese (MHO) individuals maintain good health despite obesity. Research explores MHO definitions, mechanisms like adipose tissue inflammation, and outcomes after interventions, revealing protective factors.

Keywords:
adipose tissueinflammationmetabolic syndromemetabolically healthy obesity

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Area of Science:

  • Metabolic health and obesity research.

Background:

  • The link between obesity and metabolic diseases is well-established, yet exceptions exist.
  • Metabolically healthy obese (MHO) individuals present with obesity but without typical metabolic complications.
  • This phenotype challenges the direct correlation between excess adiposity and metabolic disease risk.

Purpose of the Study:

  • To define and explore the mechanisms behind the MHO phenotype.
  • To analyze the long-term health outcomes of MHO individuals following interventions.
  • To identify protective factors contributing to reduced metabolic and cardiovascular risk in MHO subjects.

Main Methods:

  • Review of variable definitions for MHO.
  • Analysis of potential underlying mechanisms, including adipose tissue inflammation and expansion capacity.
  • Assessment of health status changes after lifestyle interventions or bariatric surgery.

Main Results:

  • MHO is a common condition within the obese population.
  • Individuals with MHO exhibit reduced metabolic and cardiovascular risk factors despite high adiposity.
  • Mechanisms involve adipose tissue inflammation and expansion capacity, with ongoing research into other factors.

Conclusions:

  • The MHO phenotype represents a unique subset of individuals with obesity but preserved metabolic health.
  • Understanding the protective mechanisms in MHO is crucial for developing targeted health strategies.
  • Further research is needed to fully elucidate the factors contributing to the MHO profile.