How is asthma caused

Asthma can be triggered by allergens like eggs, peanuts, cow’s milk, wheat and tree nuts. Viral infections and tobacco smoke can also trigger asthma. Make sure that you get on a treatment to reduce the severity of asthma attack.

TAGS: 1. allergies caused
2. bronchitis caused
3. diabetes caused
4. emphysema caused
5. lung cancer caused

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