Just be diagnosed with asthma and it is as slowly been getting worse over the past few months. Problem I have is that I am a marathon runner and really starting to struggle with it and this is the last thing I want to slow down on. Think I have come to the conclusion that I can no longer do sprints, but any hills (and I live in an hilly area) I am wheezing and gasping for breathe, when a year ago they never used to bother me. Finding that I am gettting dizzy spells and headaches while I am running. I just want advice on how to control it better as a new comer to asthma. Just really been taking my inhaler at the beginning of a run, and then if I start to struggle to use it then.