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Obesity and asthma.

David A Beuther1, Scott T Weiss, E Rand Sutherland

  • 1National Jewish Medical and Research Center, 1400 Jackson Street, J220, Denver, CO 80206, USA.

American Journal of Respiratory and Critical Care Medicine
|April 22, 2006
PubMed
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Obesity may increase asthma risk and alter airway inflammation, though its effect on asthma severity is unclear. Research is exploring shared genetic links between these prevalent conditions.

Area of Science:

  • Pulmonary Medicine
  • Epidemiology
  • Genetics

Background:

  • Asthma and obesity are common, impactful health issues with a suggested link.
  • Obesity's inflammatory state may affect asthma risk and characteristics, but this is not fully understood.
  • Previous studies show a modest increase in asthma incidence and prevalence among obese individuals.

Purpose of the Study:

  • To investigate the relationship between obesity and asthma.
  • To explore potential shared genetic factors influencing both conditions.
  • To clarify how obesity impacts asthma risk, phenotype, and severity.

Main Methods:

  • Review of existing literature, including animal studies and human cohort studies.
  • Analysis of genetic data to identify shared polymorphisms.

Related Experiment Videos

  • Examination of physiological changes in obesity that may mimic asthma symptoms.

    • Main Results:

    • Animal models suggest leptin and obesity enhance airway inflammation.
    • Human studies indicate a modest increase in asthma incidence and prevalence with obesity.
    • Genetic studies identified shared chromosomal regions (5q, 6p, 11q13, 12q) linked to both asthma and metabolic disorders.
    • Obesity-related physiological changes can complicate asthma diagnosis.

    Conclusions:

    • A complex relationship exists between obesity and asthma, influenced by systemic inflammation and potentially shared genetics.
    • Further research is needed to integrate findings and understand the obesity-asthma connection.
    • Investigating genes like ADRB2 and NR3C1 may offer insights into the shared basis of these disorders.