Related Experiment Video
Updated: Feb 9, 2026
Simplified Whole Body Plethysmography to Characterize Lung Function During Respiratory Melioidosis
Published on: February 24, 2023
Childhood Respiratory Risk Factor Profiles and Middle-Age Lung Function: A Prospective Cohort Study from the First to
Dinh S Bui1, Haydn E Walters1, John A Burgess1
11 Allergy and Lung Health Unit, University of Melbourne, Melbourne, Victoria, Australia.
Insights
Childhood respiratory risk factors, like frequent asthma and allergies, significantly impact adult lung health and COPD risk. Targeting adult asthma and smoking can mitigate these long-term effects.
Area of Science:
- Respiratory Medicine
- Epidemiology
- Longitudinal Studies
Background:
- Childhood respiratory risk factors often coexist, influencing long-term lung health.
- Understanding specific risk factor patterns is crucial for predicting future lung function.
Purpose of the Study:
- To identify childhood respiratory risk factor profiles.
- To determine their influence on lung function and COPD in middle age.
- To explore potential mediating and modifying pathways.
Main Methods:
- Latent class analysis of 11 childhood risk factors in 8,352 participants (age 7).
- Investigation of associations with lung function and COPD at age 53.
- Analysis of mediation by childhood lung function/adult asthma and interaction with smoking.
Main Results:
- Six risk profiles identified; profile 6 (frequent asthma, bronchitis, allergy) showed strongest association with reduced lung function (FEV1, FEV1/FVC) and increased COPD risk.
- Profile 6's effect on COPD was mediated by adult asthma and reduced childhood lung function.
- Synergistic adverse effects observed for smokers with profiles 2 (parental smoking) and 6.
Conclusions:
- Childhood respiratory risk profiles predict middle-age lung function and COPD.
- Children with frequent asthma/allergies are most vulnerable, especially if they smoke as adults.
- Interventions targeting adult asthma and smoking may reduce long-term lung disease risk.
Rationale:
Childhood risk factors for long-term lung health often coexist and their specific patterns may affect subsequent lung function differently.
Objectives:
To identify childhood risk factor profiles and their influence on lung function and chronic obstructive pulmonary disease (COPD) in middle age, and potential pathways.
Methods:
Profiles of 11 childhood respiratory risk factors, documented at age 7, were identified in 8,352 participants from the Tasmanian Longitudinal Health Study using latent class analysis. We investigated associations between risk profiles and post-bronchodilator lung function and COPD at age 53, mediation by childhood lung function and adult asthma, and interaction with personal smoking.
Results:
Six risk profiles were identified: 1) unexposed or least exposed (49%); 2) parental smoking (21.5%); 3) allergy (10%); 4) frequent asthma, bronchitis (8.7%); 5) infrequent asthma, bronchitis (8.3%); and 6) frequent asthma, bronchitis, allergy (2.6%). Profile 6 was most strongly associated with lower forced expiratory volume in 1 second (FEV1) (-261; 95% confidence interval, -373 to -148 ml); lower FEV1/forced vital capacity (FVC) (-3.4; -4.8 to -1.9%) and increased COPD risk (odds ratio, 4.9; 2.1 to 11.0) at age 53. The effect of profile 6 on COPD was largely mediated by adult active asthma (62.5%) and reduced childhood lung function (26.5%). Profiles 2 and 4 had smaller adverse effects than profile 6. Notably, the effects of profiles 2 and 6 were synergistically stronger for smokers.
Conclusions:
Profiles of childhood respiratory risk factors predict middle-age lung function levels and COPD risk. Specifically, children with frequent asthma attacks and allergies, especially if they also become adult smokers, are the most vulnerable group. Targeting active asthma in adulthood (i.e., a dominant mediator) and smoking (i.e., an effect modifier) may block causal pathways and lessen the effect of such established early-life exposures.
More Related Videos
Related Concept Videos
01:26Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
01:47Lung Capacity
01:27Physiology of Respiration I: Functions of the Respiratory System
Fundamental Processes in Respiration:
01:12Relative Risk
01:26Aging
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
02:16Transcription Factors