Lots of folks on here will tell you how helpful weed is for asthma and even have links to studies to back that up, but that's not the case for me. It's been rough on mine, no matter how high the quality of what I smoke. I probably need to take it in some other form, but basically what I've done is stop smoking. Glad it's been helpful in your case, however! There's apparently a lot of evidence that it can be. I just know that that's not always true.