11Air Pollution
Air pollution both out and in your house could cause asthma. Indeed, a majority of cases are triggered by direct exposure to contaminated air from industrial factories, vehicles, or construction sites. Chemicals, dust, and toxins from these areas would result in inflammatory reactions causing construction and damage in your lungs. While it is hard to eliminate this issue completely, you would minimize the risk by reducing your exposure. Possible preventive measures include relocating to a new residential area, using a good HVAC system with advanced air filters, or covering your face when going out. [11]
