What factor is traditionally considered a risk for developing asthma?

Exposure to allergens is considered a significant risk factor for developing asthma because allergens can trigger asthma symptoms and exacerbate the condition. Common allergens include pollen, dust mites, mold, pet dander, and certain foods—substances known to provoke an immune response in sensitive individuals. When these allergens are inhaled, they can cause inflammation and narrowing of the airways, leading to the hallmark symptoms of asthma, such as wheezing, coughing, shortness of breath, and chest tightness. Understanding the role of allergens in asthma pathophysiology highlights the importance of allergen avoidance and management in asthma care.

Although other factors, such as aging, chronic smoking, and obesity, can have an impact on respiratory health and may exacerbate existing asthma, exposure to allergens is a foundational element in the development of the condition itself.