<s>[INST] At what age does asthma start? [/INST] Asthma can start at any age, although about half of all people with asthma have had their first symptoms by the age of 10, and many children with asthma have had their first asthma attack before the age of 6. Source: Ginasthma. Link: https://ginasthma.org/about-us/faqs/. Field: Lung Disease. Disease: Asthma </s>