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Smoking and pediatric respiratory health
1Department of Pediatrics, University of California at Davis, School of Medicine, USA. jpjoad@ucdavis.edu
Insights
Exposure to smoking during pregnancy and after birth significantly harms infant and child respiratory health. This includes altered lung development, increased respiratory illnesses, asthma, and even sudden infant death.
Area of Science:
- Pediatric Respiratory Medicine
- Environmental Health Sciences
- Toxicology
Background:
- Prenatal and postnatal exposure to tobacco smoke impacts fetal and infant respiratory development.
- Environmental tobacco smoke (ETS) exposure is linked to adverse respiratory outcomes in children.
Purpose of the Study:
- To review the effects of cigarette smoke exposure on infant and child respiratory health.
- To highlight research on the mechanisms underlying these effects.
Main Methods:
- Review of existing scientific literature on smoke exposure and respiratory health in children.
- Focus on basic science research exploring causative mechanisms.
Main Results:
- Prenatal smoke exposure alters fetal lung development, causing airflow obstruction and hyperresponsiveness.
- Postnatal ETS exposure increases respiratory symptoms, illnesses, decreases lung function, and heightens airway responsiveness.
- Smoke exposure is associated with asthma development, increased asthma severity, allergies, and sudden infant death.
Conclusions:
- Cigarette smoke exposure poses a significant threat to respiratory health in infants and children.
- Understanding the mechanisms is crucial for developing preventative and therapeutic strategies.
Abstract:
Many children are exposed to smoking both prenatally and postnatally. Prenatal exposure to mainstream smoke from the mother and even to environmental tobacco smoke (ETS) from the mother in utero has been shown to change fetal lung development and cause airflow obstruction and airway hyperresponsiveness. Children exposed to ETS postnatally have more symptoms of cough, wheeze, respiratory illnesses, decreases in lung function, and increases in airway responsiveness. Smoke exposure is associated with the early development of asthma, increased severity of asthma, and the development of allergy. Finally smoke exposure is associated with sudden infant death and airway obstruction. This article reviews the spectrum of effects of cigarette smoke exposure on the respiratory health of infants and children and highlights basic science research exploring the mechanisms of these effects.