Are family history, obesity, exposure to cigarette smoke, or other factors a cause of your asthma?
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What causes asthma?
Asthma results from complex interactions between an individual's inherited genetic make-up and their interactions with the environment. The factors that cause a genetically predisposed individual to become asthmatic are poorly understood. The following are risk factors for asthma:
Family history of allergic conditions
Personal history of hay fever (allergic rhinitis)
Viral respiratory illness, such as respiratory syncytial virus (RSV), during childhood