Approximately what percentage of diagnosed asthma among children is believed to be attributable to residential exposures?

The correct response indicating that approximately 40% of diagnosed asthma among children is believed to be attributable to residential exposures is supported by research that highlights the significant impact of indoor environments on respiratory health. Children's developing lungs and immune systems make them particularly susceptible to various allergens and irritants commonly found in homes, such as dust mites, mold, pet dander, secondhand smoke, and indoor air pollutants.

These residential exposures can trigger asthma symptoms and exacerbate pre-existing conditions. Factors like poor ventilation, high humidity, and the presence of moisture can contribute to the growth of mold and dust mites, both known asthma triggers. The statistic of 40% reflects a substantial portion of asthma cases, underscoring the importance of addressing housing conditions and improving the indoor environment to reduce asthma incidences in children.

While other percentages provided in the remaining options indicate varying levels of attributable risks, the estimation of 40% aligns with many public health studies that emphasize the correlation between living conditions and respiratory health outcomes. This perspective encourages public health initiatives aimed at preventing asthma through improved housing standards and environmental controls.