Violence and Asthma: A Review.

Area of Science:

• Environmental Health
• Epidemiology
• Psychoneuroimmunology

Background:

• Community violence is a significant public health concern.
• Growing evidence suggests a link between violence exposure and adverse health outcomes.
• Asthma prevalence and severity are influenced by various environmental and social factors.

Purpose of the Study:

• To review and synthesize current research on the association between community violence and asthma.
• To elucidate the potential biological, environmental, and behavioral pathways linking violence exposure to asthma.
• To propose a framework for understanding and addressing asthma in high-violence communities.

Main Methods:

• Literature review of studies examining community violence and asthma.
• Analysis of proposed biological mechanisms, including stress axis dysregulation (sympathetic-adrenal-medullary and hypothalamic-pituitary-adrenal axes).
• Examination of indirect pathways: altered susceptibility to air pollution and behavioral changes leading to increased indoor pollutant exposure.

Main Results:

• Direct association between violence exposure and asthma, mediated by sympathetic-adrenal-medullary (SAM) and hypothalamic-pituitary-adrenal (HPA) axis dysregulation.
• Violence exposure modifies asthma susceptibility to outdoor air pollution, potentially via immune response alterations.
• Behavioral changes, such as reduced outdoor activity, increase indoor pollutant exposure, contributing to asthma.

Conclusions:

• Community violence impacts asthma through direct physiological stress responses and indirect environmental and behavioral pathways.
• A comprehensive framework integrating these pathways is crucial for developing effective health policies.
• Targeting violence reduction and mitigating associated environmental exposures can improve asthma outcomes in affected communities.