Risk Factors that lead to Asthma development Host factors Environmental factors Genetic predisposition Indoor allergens Atopy Outdoor allergens Airway hyper- Occupational sensitizers a Tobacco smoke responsiveness Air pollution Gender Respiratory Infections Race/Ethnicity Parasitic infections a Socioeconomic factors Family size Diet and drugs a ObesityRisk Factors that Lead to Asthma Development Host Factors  Genetic predisposition  Atopy  Airway hyper- responsiveness  Gender  Race/Ethnicity Environmental Factors  Indoor allergens  Outdoor allergens  Occupational sensitizers  Tobacco smoke  Air Pollution  Respiratory Infections  Parasitic infections  Socioeconomic factors  Family size  Diet and drugs  Obesity