What causes asthma?

In this video, Dr Sanjay Sethi and Dr Heather Lehman discuss the causes of asthma, which can be very different for different people. They explain that people who have a family history of allergies or asthma might be more prone to developing asthma. They also talk about childhood asthma, allergic asthma, and occupational asthma where certain exposures act as triggers for asthma. While doctors can't always determine what causes asthma, they can recommend the best ways to help treat it.
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