Does asthma turn into copd? if not, are they related? i don't smoke, had asthma since birth. can i prevent longterm worsening of asthma somehow?

Yes: Asthma is leading chronic childhood disease affecting approximately 10 percent of the population nationally, chronic obstructive pulmonary disease (COPD) is leading chronic adult disease and third leading cause of death and second leading cause of disability. Some patients with both asthma and copd. Direct correlation is between severity of asthma and copd. Severe asthma 32x more likely get copd.

Asthma and COPD: Some individuals with asthma may develop worsening chronic obstruction. This is often thought to be due to remodeling of the airways. It is not well understood who gets this and who does not but it is generally believed that controlling asthma inflammation with inhaled medications might prevent it. Make regular visits to an asthma specialist. You may have ongoing asthma even without symptoms.