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Asthma I: Introduction

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...

Asthma-I: Introduction

Asthma-I: Introduction

Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...

Asthma III: Clinical Manifestations

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...

Asthma-III: Symptoms and Complications

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma

Asthma: Pathogenesis and Management

Asthma: Pathogenesis and Management

Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.

Asthma-II: Pathophysiology and Classification

Asthma-II: Pathophysiology and Classification

Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
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Related Experiment Video

Updated: Jul 16, 2026

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels

Published on: August 7, 2017

Childhood asthma and fruit consumption.

B J Okoko¹, P G Burney, R B Newson

¹Respiratory Epidemiology and Public Health Group, National Heart and Lung Institute, Imperial College London, Emmanuel Kaye Building, Manresa Road, London SW3 6LR, UK.

The European Respiratory Journal

|February 16, 2007

Summary

Children who eat bananas daily or drink apple juice may experience less wheezing. This study explored fruit consumption and asthma symptoms in primary school children.

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Area of Science:

Pediatric Allergy and Respiratory Health
Nutritional Epidemiology

Background:

Wheezing and asthma are common childhood respiratory issues.
Dietary factors, including fruit consumption, are being investigated for their potential role in respiratory health.
Previous research suggests a link between fruit intake and reduced risk of respiratory symptoms.

Purpose of the Study:

To investigate the association between fruit consumption (apples, bananas, oranges) and wheezing symptoms in primary school children.
To determine if specific fruit types or forms (e.g., fresh apples vs. apple juice) have differential effects on asthma symptoms.
To assess the relationship between fruit intake and current wheeze, ever wheeze, and ever asthma.

Main Methods:

A population-based survey of 2,640 primary school children aged 5-10 years in Greenwich, UK.
Data collection via questionnaires on asthma symptoms and fruit consumption habits.
Statistical analysis, including controlling for confounding variables, to calculate odds ratios and confidence intervals for wheezing and asthma based on fruit intake.

Main Results:

Daily banana consumption was associated with reduced odds of current wheeze (OR 0.66) and ever wheeze (OR 0.69).
Daily consumption of apple juice from concentrate was associated with reduced odds of current wheeze (OR 0.53).
No significant associations were found for fresh apple consumption, other fruits, or orange juice with asthma symptoms.

Conclusions:

Higher consumption of bananas and apple juice from concentrate may offer a protective effect against wheezing in children.
Dietary interventions focusing on specific fruit products could potentially play a role in managing childhood respiratory symptoms.
Further research is warranted to confirm these findings and elucidate the mechanisms behind the observed associations.